BaPbO3(BPO)具有优良的导电性,稳定的化学性质,其晶格常数a与2aYBCO相近,有望成为YBCO超导带材的导电隔离层.实验采用两种化学溶液沉积(CSD)法,以BaCO3、PbO为溶质, EDTA-Cit为螯合剂的方法(简称无机法)和以乙酸钡、乙酸铅为溶质,以丙酸为溶剂的方法(简称有机法)在单晶YSZ(100)、LAO(100)基底上通过旋转涂覆和热处理生长BPO薄膜.实验表明700℃的热处理是形成BPO相的适宜温度,低温段的保温和缓慢升温有利于形成连续均匀的BPO薄膜.经XRD分析,采用两种方法制取的薄膜均为单相的BPO.与BPO粉末的XRD相比,后一种方法制取的BPO薄膜在(100)和(200)衍射峰明显增强,表明其在单晶LAO基底上实现了一定程度的外延生长,但没有实现单晶生长.在扫描电子显微镜下观察,后一种方法制取的薄膜较前一方法均匀、致密.
参考文献
[1] | T. Aytug;B. W. Kang;C. Cantoni .Growth and characterization of conductive SrRuO_3 and LaNiO_3 multilayers on textured Ni tapes for high-J_c YBa_2Cu_3O_(7-#delta#) coated conductors[J].Journal of Materials Research,2001(9):2661-2669. |
[2] | Aytug T;Paranthaman M;Zhai HY;Gapud AA;Leonard KJ;Martin PM;Goyal A;Thompson JR;Christen DK .An approach for electrical self-stabilization of high-temperature superconducting wires for power applications[J].Applied physics letters,2004(14):2887-2889. |
[3] | Norton DP.;Kim K.;Christen DK.;Budai JD.;Sales BC.;Chisholm MF. Kroeger DM.;Goyal A.;Cantoni C. .(La,Sr)TiO3 as a conductive buffer for RABiTS coated conductors[J].Physica, C. Superconductivity and its applications,2002(Pt.2):818-820. |
[4] | 熊曹水,宗登刚,孟广南,皮雳,熊永红,李晓光.(110)取向La0.67Sr0.33MnO3-δ外延膜的结构和磁电阻效应研究[J].低温物理学报,1999(03):199-204. |
[5] | 黄庆,曲远方,马卫兵.BaPbO3导电陶瓷的研究与应用[J].硅酸盐通报,2001(06):34-38. |
[6] | 潘金生;仝健民;田民波.金属学原理[M].北京:清华大学,1998:415. |
[7] | 何菊生,张萌,肖祁陵.半导体外延层晶格失配度的计算[J].南昌大学学报(理科版),2006(01):63-67,102. |
[8] | Liang C;Lee Y H;Wu J M .[J].Journal of Crystal Growth,2005,283:390-396. |
[9] | Li F H;Fan Z G;Wang J et al.[J].Acta Metallurgica Sinica Letter,2005,18(02):336-339. |
[10] | Liang CS.;Wu JM.;Chang MC. .Ferroelectric BaPbO3/PbZr0.53Ti0.47/BaPbO3 heterostructures[J].Applied physics letters,2002(19):3624-3626. |
[11] | Yu Y J;Chan H L W;Wang F P et al.[J].Materials Letters,2004,58:1885-1888. |
[12] | Tseng T K;Wu J M .[J].Thin Solid Films,2005,491:143-147. |
[13] | Wang Fan;UusimBki A;Leppavuori S et al.[J].Materials Research Bulletin,1996,31(01):37-46. |
[14] | 王晓萍;徐廷献;裴清钢 .[J].材料研究学报,1998,12(02):199-202. |
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