Magnetic and magnetotransport properties of magnetite films with step edges

被引：5
作者：
Ziese, M
Höhne, R
Semmelhack, HC
Han, KH
Esquinazi, P
Zimmer, K
机构：
[1] Univ Leipzig, Dept Superconduct & Magnetism, D-04103 Leipzig, Germany
[2] Inst Surface Modificat, D-04318 Leipzig, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 279卷 / 2-3期
关键词：
magnetite; magnetization; magnetoresistance; spin polarized transport;
D O I：
10.1016/j.jmmm.2004.02.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magneto resistance of step edges in magnetite films was systematically studied. An enhancement of the magnetoresistance by the introduction of step edges was observed, especially in the high-field regime. This was modelled by spin-disorder scattering. The analysis revealed magnetic cluster formation at the step edges. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：331 / 342
页数：12
相关论文
共 39 条
[1]  
Chikazumi S., 1997, PHYS FERROMAGNETISM
[2]   Magnetoresistance of magnetite [J].
Coey, JMD ;
Berkowitz, AE ;
Balcells, L ;
Putris, FF ;
Parker, FT .
APPLIED PHYSICS LETTERS, 1998, 72 (06) :734-736
[3]  
Donahue M., Object oriented micromagnetic framework (oommf)
[4]   Defect-induced spin disorder and magnetoresistance in single-crystal and polycrystal rare-earth manganite thin films [J].
Evetts, JE ;
Blamire, MG ;
Mathur, ND ;
Isaac, SP ;
Teo, BS ;
Cohen, LF ;
Macmanus-Driscoll, JL .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1998, 356 (1742) :1593-1613
[5]  
GLAZMAN LI, 1988, ZH EKSP TEOR FIZ+, V94, P332
[6]  
GLAZMAN LI, 1988, ZH EKSP TEOR FIZ, V67, P1276
[7]   Grain-boundary effects on the magnetoresistance properties of perovskite manganite films [J].
Gupta, A ;
Gong, GQ ;
Xiao, G ;
Duncombe, PR ;
Lecoeur, P ;
Trouilloud, P ;
Wang, YY ;
Dravid, VP ;
Sun, JZ .
PHYSICAL REVIEW B, 1996, 54 (22) :15629-15632
[8]   Voltage and temperature dependence of the grain boundary tunneling magnetoresistance in manganites [J].
Höfener, C ;
Philipp, JB ;
Klein, J ;
Alff, L ;
Marx, A ;
Büchner, B ;
Gross, R .
EUROPHYSICS LETTERS, 2000, 50 (05) :681-687
[9]   Spin-polarized intergrain tunneling in La-2/Sr-3(1)/3MnO3 [J].
Hwang, HY ;
Cheong, SW ;
Ong, NP ;
Batlogg, B .
PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2041-2044
[10]   SMALL-POLARON CONDUCTION AND SHORT-RANGE ORDER IN FE3O4 [J].
IHLE, D ;
LORENZ, B .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, 19 (26) :5239-5251
1234