Investigation on Spin Dependent Transport Properties of Core-Shell Structural Fe3O4/ZnS Nanocomposites for Spintronic Application

被引：34

作者：

Liu, Er ^{[1
]}

Yuan, Honglei ^{[1
]}

Kou, Zhaoxia ^{[1
]}

Wu, Xiumei ^{[1
]}

Xu, Qingyu ^{[1
]}

Zhai, Ya ^{[1
,2
]}

Sui, Yunxia ^{[3
]}

You, Biao ^{[2
]}

Du, Jun ^{[2
]}

Zhai, Hongru ^{[2
,3
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[2] Nanjing Univ, Natl Lab Solid Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Ctr Mat Anal, Nanjing 210093, Jiangsu, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

MAGNETORESISTANCE; MICROSPHERES; DRIVEN;

D O I：

10.1038/srep11164

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The core-shell structural Fe3O4/ZnS nanocomposites with controllable shell thickness were well-fabricated via seed-mediate growth method. Structural and morphological characterizations reveal the direct deposition of crystalline II-VI compound semiconductor ZnS shell layer on Fe3O4 particles. Spin dependent electrical transport is studied on Fe3O4/ZnS nanocomposites with different shell thickness, and a large magnetoresistance (MR) ratio is observed under the magnetic field of 1.0T at room temperature and 100 K for the compacted sample by Fe3O4/ZnS nanocomposites, which is 50% larger than that of sample with pure Fe3O4 particles, indicating that the enhanced MR is contributed from the spin injection between Fe3O4 and ZnS layer.

引用

页数：11

共 34 条

[1] Fabrication of well-defined water-soluble core/shell heteronanostructures through the SiO2 spacer
Chen, Minghai
Gao, Lian
Yang, Songwang
Sun, Jing
[J]. CHEMICAL COMMUNICATIONS, 2007, (12) : 1272 - 1274
[2] Magnetoresistance of magnetite
Coey, JMD
Berkowitz, AE
Balcells, L
Putris, FF
Parker, FT
[J]. APPLIED PHYSICS LETTERS, 1998, 72 (06) : 734 - 736
[3] Temperature dependence of the conductance and magnetoresistance of CrO2 powder compacts -: art. no. 064410
Dai, JB
Tang, JK
[J]. PHYSICAL REVIEW B, 2001, 63 (06)
[4] Demidov VE, 2012, NAT MATER, V11, P1028, DOI [10.1038/nmat3459, 10.1038/NMAT3459]
[5] Monodisperse magnetic single-crystal ferrite microspheres
Deng, H
Li, XL
Peng, Q
Wang, X
Chen, JP
Li, YD
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (18) : 2782 - 2785
[6] Dietl T, 2010, NAT MATER, V9, P965, DOI [10.1038/nmat2898, 10.1038/NMAT2898]
[7] Self-assembled growth of ZnS nanobelt networks
Hu, PA
Liu, YQ
Cao, LC
Zhu, DB
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (03) : 936 - 938
[8] Theory of tunneling magnetoresistance in granular magnetic films
Inoue, J
Maekawa, S
[J]. PHYSICAL REVIEW B, 1996, 53 (18): : 11927 - 11929
[9] Spin and phase coherence lengths in n-InSb quasi-one-dimensional wires
Kallaher, R. L.
Heremans, J. J.
Goel, N.
Chung, S. J.
Santos, M. B.
[J]. PHYSICAL REVIEW B, 2010, 81 (03):
[10] Lateral drag of spin coherence in gallium arsenide
Kikkawa, JM
Awschalom, DD
[J]. NATURE, 1999, 397 (6715) : 139 - 141

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