- Jin Kexin
Jin Kexin
Northwestern Polytechnical University, Xi’an 710072, China
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Search for this author on this site - Zhao Shenggui
Zhao Shenggui
Xi’an University of Science and Technology, Xi’an 710054, China
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Search for this author on this site - Tan Xingyi
Tan Xingyi
Northwestern Polytechnical University, Xi’an 710072, China
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Search for this author on this site - Chen Changle
Chen Changle
Northwestern Polytechnical University, Xi’an 710072, China
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La0.3Sr0.7FeO3 (LSFO) thin films were prepared by RF magnetron sputtering method. The resistance-temperature relation shows that the film favors the semiconductive conduction in the testing temperature range, which arises from the charge ordering of Fe3+ and Fe5+ ions. The charge ordering transition happened at T=250 K. The laser irradiation induces a decrease of the resistance of the film and the maximum relative change in the photoinduced resistance is about 56.3% at T=190 K. The analysis of the resistance-temperature relation using the variable range hoping (VRH) model shows that the intrinsic mechanism of the laser irradiation is the delocalization of the electrons.
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[Jin Kexin, Zhao Shenggui, Tan Xingyi, Chen Changle. Transport and Photoinduced Properties of La0.3Sr0.7FeO3 Thin Films[J]. Rare Metal Materials and Engineering,2010,39(1):76~79.]
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- Received:January 12,2009