Inverse magnetoresistance in textured Fe3O4 film

被引：9
|
作者：
Liu, Er [1 ]
Zhang, Wen [1 ]
Zheng, Jian-Guo [2 ]
Hu, Xuefeng [3 ]
Ou, Huiling [1 ]
Du, Ruxia [1 ]
Kou, Chaoxia [1 ]
Zhai, Ya [1 ,4 ]
Xu, Qingyu [1 ]
Du, Jun [4 ]
Xu, Yongbing [3 ]
Zhai, Hongru [1 ,4 ]
机构：
[1] Southeast Univ, Dept Phys, Jiangsu Key Lab Adv Metall Mat, Nanjing 211189, Jiangsu, Peoples R China
[2] Univ Calif Irvine, Irvine Mat Res Inst, Irvine, CA 92697 USA
[3] Univ York, Dept Elect, York YO10 5DD, N Yorkshire, England
[4] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 649卷
基金：
美国国家科学基金会; 中国博士后科学基金;
关键词：
Inverse MR; Textured Fe3O4 film; XMCD; Spintronics;
D O I：
10.1016/j.jallcom.2015.07.108
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A surprising inverse (positive) MR effect was observed in thin film of magnetite (Fe3O4) grown on Si substrate by pulsed laser deposition (PLD). Transmission electron microscopy (TEM) and X-ray diffraction (XRD) measurements show a highly (111)-textured growth and single phase nature of Fe2O3 thin film. X-Ray Magnetic Circular Dichroism (XMCD) and X-ray absorption spectroscopy (XAS) were employed to exclude the existence of g-Fe2O3. The surface morphology of the film was investigated by atomic force microscopy (AFM). Based on the aforementioned studies, we proposed a spin dependent conduction mechanism to explain the observed anomalous MR effect. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：239 / 243
页数：5
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