中国激光, 2012, 39 (10): 1007001, 网络出版: 2012-10-18
(Bi,Pb)2Sr2CaCu2O8薄膜的激光感生电压效应
Laser Induced Voltage Effect of (Bi,Pb)2Sr2CaCu2O8 Thin Films
薄膜 脉冲激光沉积 激光感生热电电压 thin films pulsed laser deposition (Bi (Bi Pb)2Sr2CaCu2O8 Pb)2Sr2CaCu2O8 laser induced thermoelectric voltage
摘要
采用紫外脉冲激光沉积技术和高低温沉积工艺,在LaAlO3(100)平衬底及倾斜衬底上成功制备了c轴取向的(Bi,Pb)2Sr2CaCu2O8[(Bi,Pb)-2212]薄膜;研究了在倾斜LaAlO3(100)单晶衬底上生长的(Bi,Pb)-2212薄膜激光感生热电电压信号与沉积条件及入射激光能量的关系。为避免(Bi,Pb)-2212薄膜被激光剥蚀或蒸发,还初步研究了MgO保护层对(Bi,Pb)-2212薄膜激光感生电压信号的作用,结果表明MgO层能够显著增强激光感生热电电压效应。
Abstract
Pulsed laser deposition technique is employed to grow c axis oriented (Bi,Pb)2Sr2CaCu2O8[(Bi,Pb)-2212]/LaAlO3(100) thin films under both the low and high temperature deposition process. The laser induced thermoelectric voltage (LITV) effect is studied on the films grown on vicinal-cut LaAlO3(100) substrates; the influences of deposition time and incident laser energy on LITV signals are investigated. Moreover, in order to prevent laser-ablating or laser-evaperating of the films, (Bi,Pb)-2212 film coated with MgO layer is prepared, and the effect of MgO protecting layer on LITV signals of the films is studied. The result shows that LITV effect can be dramatically enhanced by MgO protection layer.
张辉, 何恩全, 杨宁. (Bi,Pb)2Sr2CaCu2O8薄膜的激光感生电压效应[J]. 中国激光, 2012, 39(10): 1007001. Zhang Hui, He Enquan, Yang Ning. Laser Induced Voltage Effect of (Bi,Pb)2Sr2CaCu2O8 Thin Films[J]. Chinese Journal of Lasers, 2012, 39(10): 1007001.