Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/17280
標題: 超導體Y3Ba5Cu8O18奈米線的製備及物理性質的研究
The synthesis and characterization of Y3Ba5Cu8O18 nanowirs
作者: 施建州
shih, chien-chou
關鍵字: 奈米線
nanowirs
溶膠凝膠
Y3Ba5Cu8O18
sol-gel
Y3Ba5Cu8O18
出版社: 物理學系所
引用: [1]超導體簡介/呂華台、吳景淼、洪姮娥 等編著/中山文庫 [2]J. Bardeen, L.N. Cooper,and K.A. Mu ̈ller Z.Phy.B-Condensed Matter 64,189-193(1986) [3]A. Tavana ,M. Akhavan ,Eur. Phys. J. B 73, 79-83 (2010) [4] C. R. Martin Science 266 196 (1994) [5] Xiangyang Ma, Hui Zhang, Jin Xu, Junjie Niu, Qin Yang, Jian Sha, Deren Yang Chemical Physics Letters 363 579 (2002) [6]R. Micnas, J. Ranninger, S. Robaszkiewicz, Rev. Mod. Phys. , vol. 62, No. 1, January 1990 [7]Xu Jian,Liu Xiaohe,Li Yadong, Materials Chemistry and Physics 86 (2004) 409–413 [8] A. Aliabadi, Y. Akhavan Farshchi, M. Akhavan, Physica C 469, 2012 (2009) [9] S.H. Lai, Y.C. Hsu, M.D. Lan, Solid State Communications 148 (2008) 452_454 [10]A.A.Abrikosov,J.Exp.Theor.Phys.,U.U.S.R.,32(1957).1442
摘要: 我們以陽極氧化鋁奈米孔洞薄膜(AAO)作為生長奈米線的基板,製備過程中利用不同的電解液或電壓等參數可控制奈米孔洞的大小,配合溶膠凝膠法可製備出不同尺度的Y3Ba5Cu8O18-δ高溫超導奈米線。將薄膜外側的粉末以X-ray繞射研究樣品晶格結構,估算a軸為3.88A、b軸為3.81A、c軸為31.24A,並利用掃描式電子顯微鏡(SEM)拍攝表面形貌,之後藉由能量分散光譜(EDX)確認Y3Ba5Cu8O18-δ奈米線的元素成分無誤,再以場發射電子顯微鏡(FESEM)觀察奈米線在陽極氧化鋁奈米孔洞薄膜中的型態。最後利用超導量子干涉磁量儀(SQUID)量測Y3Ba5Cu8O18-δ奈米線的超導轉變溫度,比較塊材與不同尺度奈米線的超導轉變溫度,並推算出樣品相干長度4.7×〖10〗^(-9)m。
We use AAO as a substrate of the growth of nanowires, and during the preparation, by using a different electrolyte, voltage and other parameters, we are able to control the size of the nanopores. In coordination with the sol-gel method we can prepare different scales of the Y3Ba5Cu8O18-δ, high-temperature superconducting nanowires. Use X-ray diffraction to study sample lattice structure of the powder on the outside of the film and we can estimate the a-axis, b-axis, and c-axis. Simultaneously we can use a SEM to shoot the surface morphology, followed by an EDX to confirm the elemental composition of the Y3Ba5Cu8O18-δ nanowire is correct, then a FESEM to observe the types of nanowires in the AAO film. Finally, using the SQUID measurement to measure the Y3Ba5Cu8O18-δ nanowire superconducting transition temperature, and compare the bulk with different scale nanowire superconducting transition temperature to calculate the sample coherence length m.
URI: http://hdl.handle.net/11455/17280
其他識別: U0005-1607201214555600
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-1607201214555600
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