請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/34845完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林敏聰(Minn-Tsong Lin) | |
| dc.contributor.author | Wen-Chin Lin | en |
| dc.contributor.author | 林文欽 | zh_TW |
| dc.date.accessioned | 2021-06-13T06:35:30Z | - |
| dc.date.available | 2006-01-19 | |
| dc.date.copyright | 2006-01-19 | |
| dc.date.issued | 2006 | |
| dc.date.submitted | 2006-01-12 | |
| dc.identifier.citation | [1] W. C. Lin, C. C. Kuo, C. L. Chiu, and Minn-Tsong Lin, J. Appl. Phys. 89,
7139 (2001). [2] M.-T. Lin, J. Shen, W. Kuch, H. Jenniches, M. Klaua, C. M. Schneider, and J. Kirschner, Phys. Rev. B 55, 5886 (1997). [3] R. Allenspach, M. Stampanoni, and A. Bischof, Phys. Rev. Lett. 65, 3344 (1990). [4] S. M¨uller, P. Bayer, C. Reischl, K. Heinz, B. Feldmann, H. Zillgen, and M. Wuttig, Phys. Rev. Lett. 74, 765 (1995). [5] M.-T. Lin, J. Shen, W. Kuch, H. Jenniches, M. Klaua, C. M. Schneider, and J. Kirschner, Surf. Sci. 410, 290 (1998). [6] B. Feldmann, B. Schirmer, A. Sokoll, and M. Wuttig, Phys. Rev. B 57, 1014 (1998). [7] F. Huang, M. T. Kief, G. J. Mankey, and R. F. Willis, Phys. Rev. B 49, 3962 (1994). [8] Gabriel Bochi, C. A. Ballentine, H. E. Inglefield, C. V. Thompson, and R. C. O’Handley, Phys. Rev. B 53, R1729 (1996). [9] B. Schulz and K. Baberschke, Phys. Rev. B 50, 13467 (1994). [10] W. L. O’Brien, T. Droubay, and B. P. Tonner, Phys. Rev. B 54, 9297 (1996). [11] R. Jungbult, M. T. Johnson, J. a. d. Stegge, A. Reinders, and F. J. A. d. Broeder, J. Appl. Phys. 75, 6424 (1994). 148 Bibliography 149 [12] A. Dittschar, W. Kuch, M.-T. Lin, C. M. Schneider, and J. Kirschner, Phys. Rev. B 57, R3209 (1998). [13] R. Thamankar, A. Ostroukhova, and F. O. Schumann, Phys. Rev. B 66, 134414 (2002). [14] C. C. Kuo, S. F. Chuang, W. Pan, W. C. Lin, and Minn-Tsong Lin, J. Appl. Phys. 91, 7185 (2002). C. C. Kuo, W. C. Lin, S. F. Chuang, and Minn-Tsong Lin, Surf. Sci. accepted (2005). [15] Minn-Tsong Lin, W. C. Lin, C. C. Kuo, and C. L. Chiu, Phys. Rev. B 62, 14268 (2001). [16] Peter James, Olle Eriksson, Olof Hjaortstam, B¨orje Johansson, and Lars Nordstr ¨om, Appl. Phys. Lett. 76, 915 (2000). [17] A. Lessard, T. H. Moos, and W. H¨ubner, Phys. Rev. B 56, 2594 (1997). [18] P. James, O. Eriksson, B. Johansson, and I. A. Abrikosov, Phys. Rev. B 59 , 419 (1999). [19] D. Hobbs, J. Hafner, and D. Spi˘s´ak, Phys. Rev. B 68, 14407 (2004). [20] Yasuo Endoh and Yoshikazu Ishikawa, J. Phys. Soc. Jpn. 30, 1614 (1971). [21] J. T. Kohlhepp, and W. J. M. de Jonge, J. Appl. Phys. 95, 6840 (2004). [22] S. Andrieu, M. Finazzi, Ph. Bauer, H. Fischer, P. Lefevre, A. Traverse, K. Hricovini, G. Krill, M. Piecuch, Phys. Rev. B 57, 1985 (1998). [23] B. T. Jonker, J. J. Krebs, and G. A. Prinz, Phys. Rev. B 39, 1399 (1989). [24] S. L. Qiu, and P. M. Marcus, Phys. Rev. B 60, 14533 (1999). [25] S. L. Qiu, P. M. Marcus, and Hong Ma, Phys. Rev. B 62, 3292 (2000). [26] T. Oguchi, and A. J. Freeman, J. Magn. Magn. Mater. 46, L1 (1984). [27] P. Kr¨uger, O. Elmouhssine, C. Demangeat, and J. C. Parlebas, Phys. Rev. B 54, 6393 (1996). January 11, 2006 Bibliography 150 [28] B. Schirmer, B. Feldmann, A. Sokoll, Y. Gauthier, and M. Wuttig, Phys. Rev. B 60, 5895 (1999). [29] W. C. Lin, L. C. Lin, T. Y. Chen, B. Y. Wang, Ker-Jar Song, and Minn-Tsong Lin, J. Appl. Phys. 97, 10K112 (2005) [30] M.-T. Lin, J. Shen, W. Kuch, H. Jenniches, M. Klaua, C. M. Schneider, and J. Kirschner, Phys. Rev. B 55, 5886 (1997). [31] M.-T. Lin, J. Shen, W. Kuch, H. Jenniches, M. Klaua, C. M. Schneider, and J. Kirschner, Surf. Sci. 410, 290 (1998). [32] M. Zheng, J. Shen, P. Ohresser, Ch. V. Moha, M. Klaua, J. Barthel, and J. Kirschner, J. Appl. Phys. 85, 5060 (1999). [33] S. Muller, P. Bayer, C. Reischl, K. Heinz, B. Feldmann, H. Zillgen, and M. Wuttig, Phys. Rev. Lett. 74, 765 (1995). [34] B. Y. Wang, W. C. Lin, Y. W. Liao, Ker-Jar Song, and Minn-Tsong Lin, unpublished. [35] C. C. Kuo, C. L. Qiu, W. C. Lin, and Minn-Tsong Lin, Surf. Sci. 520, 121 (2002). [36] C. C. Kuo, W. C. Lin, C. L. Qiu, H. L. Huang, and Minn-Tsong Lin, J. Appl. Phys. 89, 7153 (2001). [37] S. W. D. Tian, F. Jona, and P. M. Marcus, Solid State Commun. 70, 199 (1989). [38] J. Nogu´es, I. K. Schuller, J. Magn. Magn. Mater. 192 203 (1999). [39] S. Matt, K. Takano, S. S. P. Parkin, and Eric E. Fullerton, Phys. Rev. Lett. 87, 087202 (2001). [40] Z. Y. Liu, and S. Adenwalla, J. Appl. Phys. 93, 2091 (2003). [41] Sebastiaan van Dijken, Magali Besnier, Jerome Moritz, and J. M. D. Coey, J. Appl. Phys. 97, 10K114 (2005). January 11, 2006 Bibliography 151 [42] J. Sort, V. Baltz, F. Garcia, B. Rodmacq, and B. Dieny, Phys. Rev. B 71, 054411 (2005). [43] W. Kuch, F. Offi, L. I. Chelaru, M. Kotsugi, K. Fukumoto and J. Kirschner, Appl. Phys. Lett. 86, 122504 (2005). [44] C. Won, Y. Z. Wu, H. W. Zhao, A. Scholl, A. Doran, W. Kim, T. L. Owens, X. F. Jin, Z. Q. Qiu, Phys. Rev. B 71, 024406 (2005). [45] J. Wang, W. Kuch, L. I. Chelaru, F. Offi, , and M. Kotsugi, Appl. Phys. Lett. 86, 122504 (2005). [46] W. Kuch, L. I. Chelaru, F. Offi, J. Wang, M. Kotsugi, and J. Kirschner, Phys. Rev. Lett. 92, 017201 (2004). [47] B. Schirmer, B. Feldmann, A. Sokoll, Y. Gauthier, M. Wuttig, Phys. Rev. B 60, 5895 (1999). [48] W. C. Lin, T. Y. Chen, L. C. Lin, B. Y. Wang, Ker-Jar Song, and Minn-Tsong Lin, unpublished. [49] J. Nogu´es, I. K. Schuller, J. Magn. Magn. Mater. 192 203 (1999). [50] H.-J. Freund, Surf. Sci. 500, 271 (2002). [51] C. R. Henry, Surf. Sci. Rep. 31, 235 (1998). [52] F. Offi, W. Kuch, and J. Kirschner, Phys. Rev. B 66, 64419 (2002). [53] W. Kuch, F. Offi, L. I. Chelaru, M. Kotsugi, K. Fukumoto and J. Kirschner, Appl. Phys. Lett. 86, 122504 (2005). [54] C. C. Kuo, W. Pan, Y. C. Chen, Minn-Tsong Lin, J. Appl. Phys. 93, 8743 (2003). [55] C. Won, Y. Z. Wu, H. W. Zhao, A. Scholl, A. Doran, W. Kim, T. L. Owens, X. F. Jin, Z. Q. Qiu, Phys. Rev. B 71, 024406 (2005). January 11, 2006 Bibliography 152 [56] F. Matthes, A. Rzhevskii, L.-N. Tong, L. Malkinski and Z. Celinski, C. M. Schneider, J. Appl. Phys. 93, 6504 (2003). [57] Y.-W. Mo, D. E. Savage, B. S. Swartzentruber, M. G. Lagally, Phys. Rev. Lett. 65, 1020 (1990). [58] I. Daruka, A. L. Barabasi, Phys. Rev. Lett. 79, 3708 (1997). [59] Z. Gai, B. Wu, J. P. Pierce, G. A. Farnan, D. Shu, M. Wang, Z. Zhang, J. Shen, Phys. Rev. Lett. 89, 235502-1 (2002). [60] S. Gwo, C.-P. Chou, C.-L. Wu, Y.-J. Ye, S.-J. Tsai, W.-C. Lin, M.-T. Lin, Phy. Rev. Lett. 90, 185506-1 (2003). [61] M. Haruta, Catal. Today 36, 153 (1997). [62] M. Valden, X. Lai, D. W. Goodman, Science 281, 1647 (1998). [63] H.-J. Freund, Surf. Sci. 500, 271 (2002). [64] C. R. Henry, Surf. Sci. Rep. 31, 231 (1998). [65] C. T. Campbell, Surf. Sci. Rep. 27, 1 (1997). [66] M. Y. Lai, Y. L. Wang, Phys. Rev. B 64, 241404 (2001). H. H. Chang, M. Y. Lai, J. H. Wei, C. M. Wei, Y. L. Wang, Phys. Rev. Lett. 92, 066103-1 (2004). [67] J.-L. Li, J.-F. Jia, X.-J. Liang, X. Liu, J.-Z. Wang, Q.-K. Xue, Z.-Q. Li, J. S. Tse, Z. Zhang, S. B. Zhang, Phys. Rev Lett. 88, 66101 (2002). [68] V. G.Kotlyar, A. V. Zotov, A. A. Saranin, T. V. Kasyanova, M. A. Cherevik, I. V. Pisarenko, V. G. Lifshits, Phys. Rev. B 66, 165401 (2002). [69] J. Zhou, Y. C. Kang, D. A. Chen, Surf. Sci. 537, L429 (2003). [70] R. Vollmer, S. van Dijken, M. Schleberger, and J. Kirschner, Phys. Rev. B, 61, 1303 (2000). [71] C. M. Schneider, P. Bressler, P. Schuster, J. Kirschner, J. J. de Miguel, and R. Miranda, Phys. Rev. Lett. 64, 1059 (1990). January 11, 2006 Bibliography 153 [72] F. Wilhelm, U. Bovensiepen, A. Scherz, P. Poulopoulos, A. Ney, H. Wende, G. Ceballos, K. Baberschke, J. Magn. Magn. Mater. 222, 163 (2000). [73] M. E. Buckley, F. O. Schumann, and J. A. C. Bland, Phys. Rev. B 52, 6596 (1995). [74] D. S. Wang, Ru-qian Wu, A. J. Freeman, J. Magn. Magn. Mater. 129, 237 (1994). [75] Y. Huttel, G. van der Laan, T. K. Johal, N. D. Telling, and P. Bencok, Phys. Rev. B 68, 174405 (2003). [76] W. L. OBrien, T. Droubay and B. P. Tonner, Phys. Rev. B 54, 9297 (1996). [77] R. Pentcheva and M. Scheffler, Phys. Rev. B 61, 2211 (2000). [78] J. P. Pierce, M. A. Torija, Z. Gai, Junren Shi, T. C. Schulthess, G. A. Farnan, J. F. Wendelken, E. W. Plummer, and J. Shen, Phys. Rev. Lett. 92, 237201 (2004). [79] T. Hill, S. Stempel, T. Risse, M. Baumer, and H.-J. Freund, J. Magn. Magn. Mater. 198/199, 354 (1999). [80] M. H. Pan, H. Liu, J. Z. Wang, J. F. Jia, Q. K. Xue, J. L. Li, S. Qin, U. M. Mirsaidov, X. R. Wang, J. T. Market, Z. Zhang, and C. K. Shih, Nano Lett. 5, 87 (2005). [81] Minn-Tsong Lin, C. H. Ho, Ching-Ray Chang and Y. D. Yao, Phys. Rev. B 63, 100404(R) (2001). [82] Y. M. Chang, Minn-Tsong Lin, W. Pan, C. H. Ho, Y.D. Yao, O. de Haas, R. Sch¨afer and C. M. Schneider, J. Magn. Magn. Mater 239, 375 (2002). [83] C. C. Kuo, W. Pan, Y. C. Chen and Minn-Tsong Lin, J. Appl. Phys. 93, 8743 (2003). [84] G. Choe and S. Gupta, Appl. Phys. Lett. 70, 1766 (1997). January 11, 2006 Bibliography 154 [85] S. Nakagawa, K. Nishimura, Y. Shimizu and M. Naoe, J. Appl. Phys. 85, 4934 (1999). [86] S. Mao, S. Gangopadhyay, N. Amin and E. Murdock, Appl. Phys. Lett. 69, 3593 (1996). [87] W. H. Meiklejohn, J. Appl. Phys. 33 (1962) 1328. [88] C. Tsang, Robert E. Fontana, T. Lin and D.E. Heim, IEEE Trans. Magn. 30, 3801 (1994). [89] C. Mauri, H. C. Siegmann, P. S. Bagus, and E. Kay, J. Appl. Phys. 62, 3047 (1987). [90] A. P. Malozemoff, Phys. Rev. B 35, 3679 (1987). [91] A. P.Malozemoff, Phys. Rev. B 37, 7673 (1988). [92] N. C. Koon, Phys. Rev. Lett. 78, 4865 (1997). [93] J. Nogue´os, D. Lederman, T. J. Moran, and I. K. Schuller, Phys. Rev. Lett. 76, 4624 (1996). [94] T. M. Hong, Phys. Rev. B 58, 97 (1998). [95] J. Nogue´os, T. J. Moran, D. Lederman, I. K. Schuller, and K. V. Rao, Phys. Rev. B 59, 6984 (1999). [96] C. Leighton, J. Nogue´os, B. J. Jo¨osson-A˙ kerman and I. K. Schuller, Phys. Rev. Lett. 84, 3466 (2000). [97] W. C. Lin, C. C. Kuo, C. L. Chiu, and Minn-Tsong Lin, Surf. Sci. 478, 9 (2001). [98] F. Matthes, M. Scider, and C. M. Schneider, J. Appl. Phys. 91, 8144 (2002). [99] A. Braun, B. Feldmann, M. Wuttig, J. Magn. Magn. Mater. 171, 16 (1997). [100] A. Enders, D. Sander, and J. Kirschner, J. Appl. Phys. 85, 5279 (1999). January 11, 2006 Bibliography 155 [101] K. Ha, M. Ciria, R. C. O’Hanhley, P. W. Stephens, and S. Pagola, Phys. Rev. B 60, 13780 (1999). [102] W. Platow, U. Bovensiepen, P. Poulopoulos, M. Farle , and K. Babschke, L. Hammer, S. Walter, S. M¨uller, and K. Heinz, Phys. Rev. B 59, 12 641 (1999). [103] This analytical function is just used to reproduce the experimental data as a continuous function of the film thickness. It is for the convenience in the fitting of SRT boundary described latter in the text. [104] M. Kowalewski, C. M. Schneider, and B. Heinrich, Phys. Rev. B 47, 8748 (1993). [105] R. F. Willis, J. A. C. Bland, and W. Schwarzacher, J. Appl. Phys. 63, 4051 (1988). [106] C. Kittel, in Introduction to Solid State Physics, 7th ed. (John Wiley & Sons, New-York, 1996), p. 457. [107] This is due to the fact that if 's='v is the dotted line in Fig.2(b), the residual strain after 16 ML will be 1% and changes slowly with thickness. This residual strain leads the volume magnetoelastic anisotropy Kme of pure Ni 9 μeV/atom, very close to the absolute value of the shape anisotropy. So the denominator of Eq.(6) approaches zero after 16 ML, and then the dc2 becomes very large, which means a long tail in the boundary of the 2nd SRT (dashed line in Fig. 4). [108] Since the Bs1 is multiplied by both surface strain ( 6%) and alloy concentration( 11%), Bs0 is multiplied by surface strain, and ks1 is multiplied by alloy concentration in Eq.(10), their values and errors are larger than ks0 by two or one magnitudes of order. [109] Bochi’s Bs =15 erg/cm2=6105 μeV/atom and a factor of (-1/1.18) are added according to Eq.(2), because we choose 's = '?, and they choose 's = 'k. [110] W. C. Lin, B. Y.Wang, Y. W. Liao, Ker-Jar Song, and Minn-Tsong Lin, Phys. Rev. B 71, 184413 (2005) January 11, 2006 Bibliography 156 [111] W. C. Lin, C. C. Kuo, C. L. Chiu, and M.-T. Lin, Surf. Sci. 478, 9 (2001). [112] A. Braun, B. Feldmann, and M. Wuttig, J. Magn. Magn. Mater. 171, 16 (1997). [113] The lateral and perpendicular lattice constants are determined by LEED and LEED-I/V with an error of ±1%, and thus the error in determining the volume per atom is ±3%. [114] J. T. Kohlhepp and W. J. M. de Jonge, J. Appl. Phys. 95, 6840 (2004). [115] W. C. Lin, C. C. Kuo, C. L. Chiu, and Minn-Tsong Lin, Surf. Sci. 478, 9 (2001). [116] M. Seider, R. Kaltofen, U. Muschiol, M.-T, Lin, and C. M. Schneider, J. Appl. Phys. 87, 5762 (2000). [117] W. C. Lin, T. Y. Chen, L. C. Lin, B. Y. Wang, Y. W. Liao, Ker-Jar Song, and Minn-Tsong Lin, unpublished. [118] J. Shen, M.-T. Lin, J. Giergiel, C. Schmidthals, M. Zharnikov, C. M. Schneider, J. Kirschner, J. Magn. Magn. Mater. 156, 104 (1996) [119] R. Thamankar, S. Bhagwat, and F. O. Schumann, Phys. Rev. B 69, 054411 (2004). [120] F. Matthes, M. Seider, and C. M. Schneider, J. Appl. Phys. 91, 8144 (2002) [121] P. W. Murray, I. Stensgraard, E. Lagsgaard, and F. Besenbacher, Surf. Sci. 365, 591 (1996) [122] J. T. Kohlhepp and W. J. M. de Jonge, J. Appl. Phys. 95, 6840 (2004). [123] R.-P. Blum, D. Ahlbehrendt, H. Niehus, Surf. Sci. 396, 176 (1998). [124] J. M´endez, H. Niehus, Appl. Surf. Sci. 142, 152 (1999). [125] M. Ba¨umer, M. Frank, M. Heemeier, R. K¨uhnemuth, S. Stempel, H.-J. Freund, Surf. Sci. 454-456, 957 (2000). January 11, 2006 Bibliography 157 [126] M. Heemeier, S. Stempel, Sh. K. Shaikhutdinov, J. Libuda, M. Ba¨umer, R. J. Oldman, S. D. Jackson, H.-J. Freund, Surf. Sci. 523, 103 (2003). [127] B. Richter H. Kuhlenbeck, H.-J. Freund, and P. S. Bagus Phys. Rev. Lett. 93, 26805 (2004). [128] Peng Zhang, T. K. Sham Phys. Rev. Lett. 90, 245502 (2003). [129] G. K. Wertheim, S. B. DiCenzo, and D. N. E. Buchanan Phys. Rev. B 93 5384 (1986). [130] S. Andersson, P. A. Br¨uhwiler, A. Sandell, M. Frank, J. Libuda, A. Giertz, B. Brena, A. J. Maxwell, M. B¨aumer, H.-J. Freund, N. M¨artensson Surf. Sci. 442 L964VL970 (1999). [131] Z. Gai, B. Wu, J. P. Pierce, G. A. Farnan, D. Shu, M. Wang, Z. Zhang, and J. Shen, Phys. Rev. Lett. 89, 235502 (2002). [132] J. Bansmann, S. H. Baker, C. Binns, J. A. Blackman, J.-P. Bucher, J. Dorantes-D´avila, V. Dupuis, L. Favre, D. Kechrakos, A. Kleibert, K.-H. Meiwes-Broer, G. M. Pastor, A. Perez, O. Toulemonde, K. N. Trohidou, J. Tuaillon, Y. Xie, Surf. Sci. Rep. 56, 189 (2005). [133] M. Valden, X. Lai, and D. W. Goodman, Science 281, 1647 (1998). [134] S. Gwo, C.-P. Chou, C.-L. Wu, Y.-J. Ye, S.-J. Tsai, W.-C. Lin, and M.-T. Lin, Phys. Rev. Lett. 90, 185506 (2003). [135] H.-J. Freund, Surf. Sci. 500, 271 (2002). [136] T. Hill, M. Mozaffari-Afshar, J. Schmidt, T. Risse, and H.-J. Freund, Surf. Sci. 429, 246 (1999). [137] H. H. Chang, M. Y. Lai, J. H. Wei, C. M. Wei, and Y. L. Wang, Phys. Rev. Lett. 92, 066103 (2004). [138] W. C. Lin, C. C. Kuo, M.-F. Luo, Ker-Jar Song, Minn-Tsong Lin, Appl. Phys. Lett. 86, 043105 (2005). January 11, 2006 Bibliography 158 [139] P. Poulopoulos, P. J. Jensen, A. Ney, J. Lindner, and K. Baberschke, Phys. Rev. B 65, 64431 (2002). [140] Yi Li and K. Baberschke, Phys. Rev. Lett. 68, 1208 (1992). | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/34845 | - |
| dc.description.abstract | 在低維磁性系統中，由於有限尺寸效應及表面效應，因此常常在晶格結構與磁性分析上產生許多有趣特殊的物理現象。在此篇論文，我們透過調控合金比例 蒸鍍量多寡及增加覆蓋層來改變甚至操縱低維磁性系統的晶格結構與磁性。
在鈷鎳合金超薄膜中，第一次(平行膜面轉成垂直膜面方向)及第二次(垂直膜面轉成平行膜面方向)磁易軸轉向行為都發生在20原子層厚度以內。隨著鈷合金比例增加，垂直異向性存在的厚度區間隨之縮減，直到鈷合金比例超過12 %，垂直異向性就不再被觀察到。透過現象學模型能成功地模擬磁易軸方向相對於鈷合金比例及薄膜厚度的相變圖。 面心立方結構的錳塊材只在~1400 K高溫下存在，然而透過適當地選擇單晶基板Cu3Au(100)，由於其晶格常數與面心立方結構的錳塊材接近，因此能成功地在Cu3Au(100)單晶基板上磊晶成長出穩定存在於低溫的面心立方結構錳超薄膜。在本系列實驗中，面心立方結構錳超薄膜被印證具有反鐵磁性。室溫(300 K)及低溫(100 K)下成長的面心立方結構錳超薄膜展現出不同的結構變化及磁性行為。此外透過選擇適當厚度的鐵膜(6個原子層)於面心立方結構錳超薄膜上，吾人可以成功地製備“垂直易向性鐵薄膜/反鐵磁面心立方結構錳超薄膜”的雙層膜結構。在垂直磁場下冷卻降溫後，磁光科爾效應量測的結果顯示反鐵磁面心立方結構的錳超薄膜確實能提供垂直方向的磁性偏偶合交互作用，這也間接印證了面心立方結構錳超薄膜的3維磁矩結構。此外鐵錳合金超薄膜也成功地磊晶成長於Cu3Au(100)單晶基板上，其結構及磁性行為也有詳細的分析。 透過蒸鍍在超薄單晶氧化鋁層/NiAl(100)基板，吾人成功地製備線狀排列的鈷奈米顆粒陣列，此一系列線狀排列的鈷奈米顆粒陣列具有均勻顆粒大小、高熱穩定度、有序排列等特性。此種超薄單晶氧化鋁層/NiAl(100)基板對於其他鐵、錳、銅奈米顆粒陣列的製備也具有相同的優勢條件。磁光科爾效應亦用於量測鐵 、鈷奈米顆粒陣列，非磁性金屬(銅)的覆蓋層提供了奈米顆粒間額外的磁性偶合作用，因此增加了磁性奈米顆粒陣列的居禮溫度。 | zh_TW |
| dc.description.abstract | In low-dimensional magnetic systems, due to the finite size, the symmetry breaking and the large ratio of surface to bulk atoms, many interesting physics, including
the crystalline structure and magnetic properties etc., can be found or manipulated by tuning the alloy composition or deposition coverage, adding the capping layer, and choosing the proper substrate for small lattice mismatch etc.. As the film thickness increases above 8 ML, the CoxNi1−x/Cu3Au(100) alloy ultrathin films clearly exhibited progressively more relaxed structure. Due to the strain relaxation, both the 1st and the 2nd spin-reorientation transitions (SRT) occurred within 20 ML. The thickness region with perpendicular magnetization was strongly reduced by increasing Co concentration. By combining both alloy and strain relaxation effects, the SRT boundaries in the phase diagram can be described in a phenomenological model on the basis of magnetoelastics. Face-centered cubic (fcc) Mn, which exists at 1400 K in bulk material, can be successfully grown on Cu3Au(100) at 300 K (RT) and 100 K (LT), because of the small lattice mismatch at the interface. Mn films deposited at RT and LT demonstrate very different behaviors in the crystalline structure, morphology and magnetism. Both the RT and LT-Mn films proceed a thickness-dependent structural transition from face-centered cubic (fcc) to face-centered tetragonal (fct) at 12-14 and 8 ML, respectively. Significant exchange bias is observed in Fe/RT-Mn bilayers and monotonously increases with Mn thickness. The exchange bias coupling in Fe/LT-Mn is much weaker as compared with Fe/RT-Mn and drastically varies with Mn film thickness. Both the RT and LT-Mn/Cu3Au(100) films are concluded to be antiferromagnetism. Fe films grown on 15, 9 and 6 ML Mn/Cu3Au(100) revealed a structural transition from face-centered tetragonal (fct) to body-centered tetragonal (bct) during 3.7-6.9 ML, corresponding to the spin reorientation transition (SRT) from polar to longitudinal direction. Therefore we may prepare polar magnetized 6 ML Fe grown on 6 and 9 ML Mn/Cu3Au(100). After the polar field-cooling, a significant enhancement in the coercive field and a small bias field were observed. Thus the AFM-Mn/Cu3Au(100) ultrathin films were proved to have the capability of providing polar exchange bias coupling. The structural and magnetic properties of Fe/FexMn1−x bilayers prepared by epitaxial growth on Cu3Au(100) are investigated. For FexMn1−x with x=54-83%, the periodical oscillations of medium electron diffraction (MEED) persist up to 15 monolayer (ML). After field-cooling, the large exchange bias up to 200-300 Oe is measured at 100 K in 21 ML Fe/15 ML FexMn1−x for x=0-54%, indicating the antiferromagnetic properties of the single crystalline FexMn1−x films and the significant exchange bias coupling in the Fe/FexMn1−x bilayers. Co nanoparticle chains are grown by vapor deposition over a single-crystalline Al2O3 layers on NiAl(100) with such features as self-limiting size distribution with the average size of 2.7 nm, well-ordered alignment, and high thermal stability. We attribute these features to peculiar one-dimensional long stripes with, 4 nm inter-distance on the surface of the ultrathin Al2O3 template. This also provides a natural explanation why several different metals (Fe, Cu, Mn) we tried all show the same kind of spectacular alignment. The ferromagnetism of Fe nanoparticle assembly on Al2O3/NiAl(100) is observed above 150 K with the coverage larger than 5 monolayer (ML). Cu capping layer induces an enhancement of the Curie temperature (TC) in both Fe and Co magnetic nanoparticle assembly. The TC of Fe nanoparticle assembly with 2 ML and 6 ML Cu capping layer is enhanced by 20 K and even higher, indicating the critical effects of metallic capping layer in such magnetic nanostructures as nanoparticle assembly. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T06:35:30Z (GMT). No. of bitstreams: 1 ntu-95-D91222028-1.pdf: 51164319 bytes, checksum: eecea9517858f666c43689c2c5b2a049 (MD5) Previous issue date: 2006 | en |
| dc.description.tableofcontents | Abstract iii
1 Introduction 1 1.1 Manipulation of spin-orientation . . . . . . . . . . . . . . . . . . . . . 3 1.2 Artificial fcc Mn films . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Polar exchange bias coupling . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 AFM FexMn1−x ultrathin films . . . . . . . . . . . . . . . . . . . . . 8 1.5 Magnetic nanoparticle assembly . . . . . . . . . . . . . . . . . . . . . 10 2 Basic Concepts 13 2.1 Growth of thin film and islands . . . . . . . . . . . . . . . . . . . . . 13 2.2 Magnetic anisotropy . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.3 Magnetic hysteresis loop . . . . . . . . . . . . . . . . . . . . . . . . . 20 2.4 Exchange bias coupling . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3 Experimental Apparatus 26 3.1 Multi-functional UHV systems . . . . . . . . . . . . . . . . . . . . . . 27 3.2 AES, MEED, LEED and LEED-I/V . . . . . . . . . . . . . . . . . . 30 3.3 Scanning Tunneling Microscopy (STM) . . . . . . . . . . . . . . . . . 35 3.4 Magneto-Optical Kerr Effect (MOKE) . . . . . . . . . . . . . . . . . 39 3.5 X-ray Photoemission Spectroscopy (XPS) . . . . . . . . . . . . . . . . 42 4 Alloying and Strain Relaxation Effects on Spin-Reorientation Transitions (SRT) in CoxNi1−x/Cu3Au(100) Ultrathin Films 43 4.1 Experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 vii Contents viii 4.2 Growth mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 4.2.1 Medium energy electron diffraction (MEED) . . . . . . . . . . 44 4.2.2 Scanning tunneling microscope (STM) . . . . . . . . . . . . . 48 4.3 Crystalline structure . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 4.4 Magnetic properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4.5 Phenomenological model of SRT . . . . . . . . . . . . . . . . . . . . . 56 4.5.1 Alloy effect on SRT . . . . . . . . . . . . . . . . . . . . . . . . 57 4.5.2 Strain relaxation effect on SRT . . . . . . . . . . . . . . . . . 57 4.5.3 Alloy + strain relaxation effect on SRT . . . . . . . . . . . . . 58 4.6 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 4.6.1 Strain-induced (thickness-dependent) SRT . . . . . . . . . . . 60 4.6.2 Comparison between Ni/Cu3Au(100) and Ni/Cu(100) . . . . . 60 4.6.3 Alloy effect on SRT . . . . . . . . . . . . . . . . . . . . . . . . 62 4.6.4 Comparison between CoxNi1−x/Cu3Au(100) and CoxNi1−x/Cu(100) . . . . . . . . . . . . . . . . . . . . . . 63 5 Exchange bias coupling in Fe/fcc-like Mn and FexMn1−x bilayers on Cu3Au(100) 65 5.1 -phase Mn/Cu3Au(100) thin films grown at LT and RT . . . . . . . 65 5.1.1 Experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 5.1.2 Growth of RT- and LT-Mn/Cu3Au(100) . . . . . . . . . . . . 66 5.1.3 Structural transition of RT- and LT-Mn/Cu3Au(100) . . . . . 68 5.1.4 Morphology of RT-Mn/Cu3Au(100) . . . . . . . . . . . . . . . 71 5.1.5 Growth of Fe films on RT- and LT-Mn/Cu3Au(100) . . . . . . 73 5.1.6 Magnetic properties of 21 ML Fe/RT- and LT-Mn on Cu3Au(100) 74 5.1.7 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 5.2 Polar magnetized Fe /AFM -phase Mn bilayers on Cu3Au(100) . . . 82 5.2.1 Experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 5.2.2 Structure of Fe films grown on Mn/Cu3Au(100) . . . . . . . . 83 5.2.3 Morphology of 6, 9 ML Mn/Cu3Au(100) . . . . . . . . . . . . 85 5.2.4 Polar exchange bias coupling . . . . . . . . . . . . . . . . . . . 86 5.2.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 January 11, 2006 Contents ix 5.3 Structural and magnetic properties of Fe/FexMn1−x bilayers on Cu3Au(100) . . . . . . . . . . . . . . . . . . 89 5.3.1 Experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 5.3.2 Growth of FexMn1−x/Cu3Au(100) . . . . . . . . . . . . . . . . 90 5.3.3 Crystalline structure of FexMn1−x/Cu3Au(100) . . . . . . . . . 92 5.3.4 Growth and crystalline structure of Fe on 15 ML FexMn1−x/Cu3Au(100) . . . . . . . . . . . . . . . . . . 94 5.3.5 Exchange bias coupling of Fe/FexMn1−x . . . . . . . . . . . . 97 5.3.6 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 6 Preparation and Investigation of Co Nanoparticle Assembly 106 6.1 Co nanoparticle assembly on Si3N4/Si(111) . . . . . . . . . . . . . . . 107 6.2 Self-aligned Co nanoparticle chains on Al2O3/NiAl(100) . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 6.2.1 Experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 6.2.2 Preparation of self-aligned Co nanoparticles . . . . . . . . . . 111 6.2.3 Growth and crystalline structure of single-crystalline Al2O3/NiAl(100) . . . . . . . . . . . . . . . . 114 6.2.4 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 6.3 Cu, Mn, and Fe nanoparticles on Al2O3/NiAl(100) . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 6.4 Growth temperature effect on Co nanoparticle/Al2O3/NiAl(100) . . . . . . . . . . . . . . . . . . . . 121 6.4.1 Experimental results . . . . . . . . . . . . . . . . . . . . . . . 121 6.4.2 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 6.5 XPS studies on Co nanoparticle assembly . . . . . . . . . . . . . . . . 126 7 Magnetic Properties of Co and Fe Nanoparticle Assembly on Al2O3/NiAl(100) 134 7.1 Experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 7.2 Growth of Fe nanoparticles on Al2O3/NiAl(100) . . . . . . . . . . . . 135 7.3 MOKE of Fe nanoparticle assembly . . . . . . . . . . . . . . . . . . . 137 January 11, 2006 Contents x 7.4 Cu capping effect on Fe and Co nanoparticles . . . . . . . . . . . . . 137 7.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 8 Conclusion 143 8.1 Manipulation of spin-orientation in CoxNi1−x films . . . . . . . . . . . 143 8.2 Artificial fcc Mn films . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 8.3 Polar exchange bias coupling in Fe/fcc-Mn bilayers . . . . . . . . . . 145 8.4 AFM FexMn1−x ultrathin films . . . . . . . . . . . . . . . . . . . . . 146 8.5 Magnetic nanoparticle assembly . . . . . . . . . . . . . . . . . . . . . 146 Bibliography 148 Appendix 159 A.1 Curriculum Vitae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 | |
| dc.language.iso | en | |
| dc.subject | 表面 | zh_TW |
| dc.subject | 磁性 | zh_TW |
| dc.subject | 超薄膜 | zh_TW |
| dc.subject | 奈米結構 | zh_TW |
| dc.subject | 超高真空 | zh_TW |
| dc.subject | ultrathin film | en |
| dc.subject | surface | en |
| dc.subject | ultrahigh vacuum | en |
| dc.subject | nanostructure | en |
| dc.subject | magnetism | en |
| dc.title | 從超薄膜到自組排列奈米顆粒:
低維度磁性系統之成長、晶格結構與磁性分析 | zh_TW |
| dc.title | Growth, Crystalline Structure and Magnetism of Low-Dimensional Systems: From Ultrathin Films to
Self-Aligned Nanoparticles | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 94-1 | |
| dc.description.degree | 博士 | |
| dc.contributor.oralexamcommittee | 宋克嘉(Ker-Jar Song),林俊源,陳正弦,果尚志,林寬鋸,林昭吟 | |
| dc.subject.keyword | 表面,磁性,奈米結構,超高真空,超薄膜, | zh_TW |
| dc.subject.keyword | surface,magnetism,nanostructure,ultrahigh vacuum,ultrathin film, | en |
| dc.relation.page | 164 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2006-01-12 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 物理研究所 | zh_TW |
| 顯示於系所單位： | 物理學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-95-1.pdf 未授權公開取用 | 49.97 MB | Adobe PDF |
系統中的文件，除了特別指名其著作權條款之外，均受到著作權保護，並且保留所有的權利。