Decay time of laser-induced thermoelectric voltage signals
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摘要: 为了研究激光感生热电电压(laser-induced thermoelectric voltage,LITV)信号的衰减时间与薄膜物性参量的定量关系,采用脉冲激光沉积法制备了YBa2Cu3O7-x,La(0.67)Ca0.33MnO3,La0.67Pb0.33MnO3薄膜,测量了248nm的脉冲激光辐照在薄膜中诱导产生的LITV信号,并且基于激光与薄膜相互作用的光热过程推导出的LITV信号衰减时间常数的表达式。结果表明,LITV信号呈指数衰减,变化规律与LITV效应的理论模型相吻合;LITV信号的衰减时间仅决定于薄膜的热传导性能,是薄膜热扩散系数的函数;根据LITV信号的衰减时间可以计算薄膜的热扩散系数,从而提出通过测量LITV信号的衰减时间来研究薄膜热扩散系数的新方法。Abstract: In order to get the quantitative relationship between the decay time constant(DTC)of the laser-induced thermoelectric voltage(LITV)signals and the physical parameters of the thin films,YBa2Cu3O7-x,La0.67Ca0.33 MnO3, La0.67Ca0.33 MnO3 thin films were prepared by means of pulsed laser deposition.The corresponding LITV signals were detected with these films illuminated by 248nm pulsed laser.An exact function of DTC was deduced based on the interaction between the laser pulses and the films.The measured LITV signals were observed decaying exponentially,which is in agreement with the model of LITV effect.The DTC is just limited by the thermal transition properties of the films,and is the function of the thermal diffusion constant.According to the measured decay time,the thermal diffusion constants of the thin films can be calculated.Thus the measurement of DTC of LITV signals is a new way to investigate the thermal diffusion constant of thin films.
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[1] LENGFELLNER H,KREMB G,SCHNELLBÖGL A,et al.Giant voltage upon surface heating in normal YBa2Cu3O7-δ films suggesting an atomic thermopile[J].A P L,1992,60(4):501-503.
[2] LENFELLNER H,ZEUNER S,PRETTL W,et al.Thermoelectriceffect in normal-state YBa2Cu3O7-δ films[J].Europhysics Letters,1994,25(5):375-378.
[3] ZAHNER T H,SCHREINER R,STIERRORFER R,et al.Off-diagonal seebeck effect and anisotropic thermopower in Bi2Sr2CaCu2O8 thin films[J].Europhysics Letters,1997,40(6):673-678.
[4] ZHANG P X,LEE W K,ZHANG G Y.Time dependence of laser-induced thermoelectric voltages in La1-xMnxMnO3 and YBa2Cu3O7-δ thin films[J].A P L,2002,81(21):4026-4028.
[5] ZEUNER S,LENGFELLER H,PRETTL W.Thermal boundary resistance and diffusivity for YBa2Cu3O7-δ films[J].Phys Rev,1995,B51(17):11903-11908.
[6] LI X H,HABERMEIER H U,ZHANG P X.Laser-induced off-diagonal thermoelectric voltage in La1-xMnxMnO3 thin films[J].Journal of Magnetism and Magnetic Materials,2000,211(1/3):232-237.
[7] TAN S L,ZHANG H,CUI W D,et al.Laser-induced thermoelectric voltage effect in La0.67Pb0.33MnO3 thin films doped with Ag[J].Acta Physica Sinica,2006,55(8):4226-4231(in Chinese).
[8] ZHANG P X,WEN X M,GU M M,et al.YBa2Cu3O7-δ thin film room-temperature laser power meter[J].Chinese Journal of Lasers,2002,A29(3):205-208(in Chinese).
[9] CUI W D,ZHANG H,ZHANG G Y,et al.Laser-induced thermoelectric voltage of atomic layer thermopile materials[J].Chinese Journal of Lasers,2007,34(1):130-134(in Chinese).
[10] ZAHNER TH,STIERSTORFER R,RERNDL S R,et al.Picosecond thermoelectric response of thin YBa2Cu3O7-δ films[J].Physica,1999,C313(1/2):37-40.
[11] KWOK H S,ZHENG J P,YING Q Y,et al.Nonthermal optical response of Y-Ba-Cu-O thin films[J].A P L,1989,54(24):2473-2475.
[12] FRENKEL A,SAIFI M A,VENKATESAN T,et al.Optical response of nongranular high-Tc YBa2Cu3O7-δ superconducting thin films[J].J A P,1990,67(6):3054-3068.
[13] CARR G L,QUIJADA M,TANNER D B,et al.Fast bolometric response by high Tc detectors measured with subnanosecond synchrotron radiation[J].A P L,1990,57(25):2725-2727.
[14] HAGEN S J,WANG Z Z,ONG N P,et al.Anisotropy of the thermal conductivity of YBa2Cu3O7-y[J].Phys Rev,1989,B40(13):9389-9392.
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