用化学溶液法制备银基底Bi-2212超导薄膜

稀有金属, 2014, 38(5): 749-754. doi: 10.13373/j.cnki.cjrm.2014.05.002

用化学溶液法制备银基底Bi-2212超导薄膜

邓舒同 ^1, , 瞿体明 ^2, , 林冠 ^3, , 韩征和 ^4,

1.清华大学物理系应用超导研究中心,北京100084

2.清华大学机械工程系,摩擦学国家重点实验室,北京100084

3.清华大学机械系,先进成形制造教育部重点实验室,北京100084

4.清华大学物理系应用超导研究中心,北京100084

基金项目: 深圳市战略新兴产业发展专项资金(JCYJ20120614193005764,JCYJ20130402145002389)资助北京市自然科学基金(2122026)

关键词： Bi-2212 , 超导薄膜 , 银基底 , 化学溶液法

Fabrication of Bi-2212 Thin Film on Silver Substrate by Chemical Solution Method

Keywords： Bi-2212 , superconductor film , silver substrate , chemical solution method

Bi2Sr2CaCu2Ox(Bi-2212)薄膜制备工艺相对简单,在低温下具有优异的性能,因此备受青睐,已经有不少研究小组采用真空或非真空方法成功制备出高质量的Bi-2212薄膜.一般而言,单晶基底被广泛用于Bi-2212薄膜的制备.与单晶基底不同,银基底无织构,但银基底的表面粗糙度等因素对Bi-2212的c轴织构和临界电流密度有影响.并且由于银基底对Bi系高温超导材料具有较低表面能,因此Bi-2212薄膜可以在银基底上稳定存在.以乙酸-氨水溶液为基础,开发了一种在银基底上制备Bi-2212薄膜的方法,对其中的关键步骤做了详细的研究,主要包括银基底的抛光、化学溶液的配制、烧结温度等.重复旋涂-热解过程可以消除经由一次旋涂热解带来的气泡;另外在银基底和低氧分压条件下,Bi-2212的成相温度点下移,在790℃保温5h即可制备出单相Bi-2212薄膜.扫描电镜(SEM)观测表明,薄膜表面均匀平整无裂纹.随着烧结温度的升高,Bi-2201相开始出现并且其衍射峰的强度随烧结温度的升高迅速增加;当烧结温度为850℃时,出现了一种棒状相,能谱(EDS)分析表明该棒状相是一种缺Cu相.

参考文献

[1]	Hamanaka, K.;Tachiki, T.;Uchida, T. .Investigation of characteristics for different film thickness of Bi-2212/MgO fabricated by metal-organic decomposition[J].Physica, C. Superconductivity and its applications,2010(20):1457-1460.
[2]	Rossler R.;Jooss C.;Pedarnig JD. .Bi2Sr2Can-1CunO2((n+2))(+delta) thin films on c-axis oriented and vicinal substrates[J].Physica, C. Superconductivity and its applications,2001(1):13-21.
[3]	Moriya M.;Okamoto T.;Usami K.;Kobayashi T.;Goto T. .Properties of Bi-Sr-Ca-Cu-O (2212) films deposited by sputtering ontilted substrates[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,1999(2):2380-2382.
[4]	Gobel OF;Du X;Hibma T;von Lampe I;Steiner U .Epitaxial growth of solution deposited Bi2Sr2CaCu2Ox films[J].The European physical journal, B. Condensed matter physics,2004(2):149-154.
[5]	王三胜,范留彬,张丽.化学溶液法制备Bi-2212超导厚膜及表征[J].低温物理学报,2012(03):205-209.
[6]	Uchiyama T.;Uchida T. .Control of In-Plane-Orientation of Bi-2212 Thin Films Prepared by the Metal-Organic Decomposition Method[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,2007(2):3455-3458.
[7]	XiaomingYu;Huazhe Yang;YangQi .The preparation of c-axis epitaxial Bi-2212 films on STO(100) by sol-gel method[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2011(1):38-43.
[8]	Kumakura H.;Kitaguchi H.;Togano K.;Muroga T.;Sato J.;Okada M. .Influence of Ag substrates on grain alignment and critical currentdensity of Bi-2212 tape conductors[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,1999(2):1804-1807.
[9]	郝清滨,李成山,张胜楠,白利锋,马晓波,张平祥.Ag芯增强Bi-2212多芯线材的制备[J].稀有金属,2012(06):898-903.
[10]	Ayai N.;Kikuchi M.;Yamazaki K.;Kobayashi S.;Yamade S.;Ueno E.;Fujikami J.;Kato T.;Hayashi K.;Sato K.;Hata R.;Iihara J.;Yamaguchi K.;Shimoyama J. .The Bi-2223 Superconducting Wires With 200A-Class Critical Current[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,2007(2):3075-3078.

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