Electrical transport and photo-induced properties in Fe3O4 film

被引：2
|
作者：
Luo Bing-Cheng [1 ]
Chen Chang-Le [1 ]
Xie Lian [1 ]
机构：
[1] Northwestern Polytech Univ, Key Lab Condensed Matter Struct & Properties Shaa, Xian 710029, Peoples R China
来源：
ACTA PHYSICA SINICA | 2011年 / 60卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Fe3O4; film; small polaron; photo-induced properties; MAGNETIC-PROPERTIES; RESISTIVITY; SPECTRA;
D O I：
10.7498/aps.60.027306
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Highly oriented Fe3O4 film was fabricated on Si (111) substrate by pulsed laser deposition. The resistivity-temperature curve shows that the Verwey transition point is about 122 K, and the electrical transport mechanism agrees with Mott varial-range hopping model and the small polaron model for temperatures below T-v and above T-v, repectively. The laser irradiation results in the decrease of the resistivity of the film in the whole temperature range were measured, which is attributed to the intersite transitions of Fe 3d t(2g) electrons.
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页数：5
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