Temperature stability of laser induced thermoelectric voltage signal in colossal magneto resistance thin films

CUI Wen-dong; ZHANG Peng-xiang; LIU Xiang; ZHANG Guo-yong; TAN Song-lin; DAI Yong-nian

La1-XCaXMnO(LCMO),La1-XPbXMnO(LPMO) and La1-XSrXCoO(LSCO) thin films were prepared with laser pulse deposition technique in order to investigate the laser induced thermoelectric voltage signal which affected by temperature.The laser induced thermoelectric voltage signals of La1-XCaXMnO3(LCMO),La1-XPbXMnO3(LPMO) and La1-XSr-XCoO3(LSCO) thin films were measured at 290K～340K temperature range by using lock-in amplifier.The signal-temperature coefficients(STC) of three CMR thin films were defined and compared.It was found that the LSCO demonstrated positive and smallest STC,while LCMO showed largest and negative STC.

Corresponding author: ZHANG Peng-xiang, pxzhang@iampe.com;

1. Institute of Advanced Materials for Photoelectronics, Kunming University of Science and Technology, Kunming 650051, China;

2. Key Laboratory of Vacuum Metallurgy of Nonferrous Metals of Yunnan Province, Kunming 650091, China

Received Date: 2006-09-14

Accepted Date: 2006-11-10

Available Online: 2007-12-25

Abstract: La1-XCaXMnO(LCMO),La1-XPbXMnO(LPMO) and La1-XSrXCoO(LSCO) thin films were prepared with laser pulse deposition technique in order to investigate the laser induced thermoelectric voltage signal which affected by temperature.The laser induced thermoelectric voltage signals of La1-XCaXMnO3(LCMO),La1-XPbXMnO3(LPMO) and La1-XSr-XCoO3(LSCO) thin films were measured at 290K～340K temperature range by using lock-in amplifier.The signal-temperature coefficients(STC) of three CMR thin films were defined and compared.It was found that the LSCO demonstrated positive and smallest STC,while LCMO showed largest and negative STC.

HTML

Reference (9)

[1]	CHANG C L,KLEINHAMMES A,MOULTON W G et al.Symmetry-forbidden thermoelectric voltages in YBa2Cu3O7-X[J].Phys Rev,1990,B41(16):11564～11567.
[2]	TATE K L,JOHNSON R D,CHANG C L et al.Transient laser-induced voltages in room-temperature films of YBa2Cu3O7-X[J].Appl Phys,1990,67(9):4375.
[3]	LENGFELLNER H,ZEUNER S,PRETTL W et al.Thermoelectric response of normal state YBa2Cu3O3-X thin film[J].European Physics Letters,1994,25(5):375～378.
[4]	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).
[5]	ZHANG P X,LI G Zh,ZHANG Y et al.Room temperature light-thermo-detector made of hight-Tc superconductor[J].Acta Physica Sinica,1998,7(11):810～816(in Chinese).
[6]	ZHANG P X,WEN X M,GU M M et al.Thin film room-temperature laser power meter[J].Chinese Journal of Laser,2002,29(3):205～208(in Chinese).
[7]	DIJKAMP D,VENKATESAN T,WU X D.Preparation of Y-Ba-Cu oxide superconductor thin using pulsed laser evaporation from high Tc bulk material[J].A P L,1987,51(8):619～621.
[8]	WANG Ch,ZhANG P X,ZHANG G Y.Optimum thickness for laser induced thermoelectric voltage effect in hing Tc superconductor and CMR thin film[J].Acta Physica Sinica,2004,6(6):1727～1730(in Chinese).
[9]	ZHANG P X,LEE W K,ZHANG G Y.Time dependence of laser-induced thermoelectric voltages in La1-XCaXMnO3 and YBa2Cu3O1-X thin films[J].A P L,2002,81(21):4026.

Temperature stability of laser induced thermoelectric voltage signal in colossal magneto resistance thin films

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views