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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 王立民 | |
dc.contributor.author | Cheng-Wei Chu | en |
dc.contributor.author | 朱政偉 | zh_TW |
dc.date.accessioned | 2021-05-16T16:18:38Z | - |
dc.date.available | 2018-08-23 | |
dc.date.available | 2021-05-16T16:18:38Z | - |
dc.date.copyright | 2013-08-23 | |
dc.date.issued | 2013 | |
dc.date.submitted | 2013-08-14 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/5947 | - |
dc.description.abstract | 本篇論文為研究釹鋇銅氧(NdBa2Cu3O7)高溫超導材料,其原因在於此材料的抗水特性極好。我們從粉末開始配製燒結,嘗試在不同通氧環境以及燒結溫度做燒結,發現在燒結的過程中氧氣必須要流通且燒結溫度為950 ˚C,塊材能得到最好的特性。此外我們用雙軸式RF磁控濺鍍的方法成長釹鋇銅氧薄膜,分別濺鍍在鋁酸鑭(LaAlO3)、鈦酸鍶(SrTiO3)以及氧化鎂(MgO)基板上。在LaAlO3基板上我們成功長出將近90 K的薄膜。
本篇論文另一個重點在於使用冷卻循環系統(Cryo-Cycle)以探針式耦合共振器的方法,量測樣品的表面電阻。我們先量測出金在77 K的表面電阻為 27.7 mΩ,接著我們量測釹鋇銅氧/氧化鎂以及釹鋇銅氧/鈦酸鍶/氧化鎂結構,以之作比較。 | zh_TW |
dc.description.abstract | In this thesis, we have studied the high temperature superconductor, NdBa2Cu3O7, which has high stability against water corrosion. We mix and grind powder ,then heat in quartz tube at different temperature and different method to let gas into the tube. There are best quality of bulk in these different way is 950 ˚C under flow oxygen. We deposition the NBCO(NdBa2Cu3O7) films by dual – gun RF magnetic sputtering. We have grown the film on LaAlO3、SrTiO3 and MgO substrate and there are Tc=90 K films deposited on LaAlO3 substrate. The effect of several deposition parameters on the NBCO e.g., gas temperature, rf power were studies.
The probe coupling method is the way to measure the surface resistance(Rs.).We have get the gold’s Rs , 27.7 mΩ at 77 K. Then we want to compare the Rs between NBCO/Mgo and NBCO/STO/MgO. | en |
dc.description.provenance | Made available in DSpace on 2021-05-16T16:18:38Z (GMT). No. of bitstreams: 1 ntu-102-R00222061-1.pdf: 3524591 bytes, checksum: 0e1acc676be990f8dac56d34b3556a97 (MD5) Previous issue date: 2013 | en |
dc.description.tableofcontents | 封面內頁
簽名頁 中文摘要..............................i 英文摘要..............................ii 誌謝...............................iii 目錄...............................iv 圖目錄..............................vii 表目錄..............................xii 第一章 緒論........................... 1 1.1 超導現象與超導材料....................... 1 1.2 研究背景............................ 2 1.3 研究動機............................ 3 第二章 原理............................ 7 2.1 超導現象............................ 7 2.1.1 零電阻.......................... 7 2.1.2 Meissner effect...................... 7 2.1.3 倫敦穿隧深度....................... 9 2.2 二流體模型...........................11 2.3 Anderson-Kim 磁通蠕動模型................... 15 2.4 正切損耗............................16 2.5 表面阻抗............................18 2.6 S-Parameter.......................... 25 第三章 實驗方法與儀器.......................27 3.1 樣品備製 3.1.1 靶材製作.........................27 3.1.2 薄膜濺鍍.........................27 3.1.3 黃光製程.........................29 3.2 性質量測........................... 32 3.2.1 四點量測.........................32 3.2.2 XRD........................... 33 3.2.3 SEM........................... 34 3.2.4 EDX........................... 35 3.2.5 AFM........................... 37 3.2.6冷卻式網路分析儀量測系統.................38 第四章 結果與討論.........................39 4.1 靶材特性............................39 4.2 薄膜濺鍍............................ 45 4.2.1 鋁酸鑭基板....................... 45 4.2.2 鈦酸鍶基板....................... 48 4.3 表面阻抗量測..........................50 4.3.1 金-表面阻抗....................... 51 4.3.2 釹鋇銅氧濺鍍於氧化鎂基板.................58 4.3.3濺鍍NBCO/STO/MgO結構.................. 59 第五章 結論............................63 參考文獻..............................64 | |
dc.language.iso | zh-TW | |
dc.title | 成長高溫超導體釹鋇銅氧薄膜與其微波特性之研究 | zh_TW |
dc.title | Growth High Temperature Superconductor NdBa2Cu3O7 Films and Research the Microwave Properties | en |
dc.type | Thesis | |
dc.date.schoolyear | 101-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 吳秋賢,陳昭翰 | |
dc.subject.keyword | 高溫超導,釹鋇銅氧,表面阻抗, | zh_TW |
dc.subject.keyword | high temperature superconductor,NBCO,surface resistance, | en |
dc.relation.page | 66 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2013-08-14 | |
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 |
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