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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。
The c-axis oriented (Bi, Pb) 2Sr2CaCu2O8 [(Bi, Pb) -2212] thin films were successfully prepared on LaAlO3 (100) flat substrates and tilted substrates by UV pulsed laser deposition and high and low temperature deposition processes. The relationship between the laser-induced thermoelectric voltage signal of (Bi, Pb) -2212 thin film grown on an inclined LaAlO3 (100) single crystal substrate, deposition conditions and incident laser energy is shown. In order to avoid laser ablation or evaporation of (Bi, Pb) -2212 thin films, the effect of MgO protective layer on the laser induced voltage signal of (Bi, Pb) -2212 films was also studied. The results show that the MgO layer can significantly enhance the laser induced Thermoelectric voltage effect.