Magnetic properties and tunneling magnetoresistance in FeCo-SiO2 granular films

被引：2

作者：

Xi, L ^{[1
]}

Zhang, ZZ ^{[1
]}

Chi, JH ^{[1
]}

Li, CX ^{[1
]}

Ge, SH ^{[1
]}

机构：

[1] Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2001年 / 46卷 / 09期

关键词：

tunneling magnetoresistance; granular films;

D O I：

10.1007/BF03187210

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：

Fe-fv(SiO2)(1-fv) granular films were fabricated by rf sputtering (f(v) represents the Fe volume fraction). The microstructure, magnetic properties as well as the tunneling magnetoresistance effect (TMR) were systematically studied. It was found that the maximum TMR ratio is about -3.3% at f(v) = 0.33. Under the same condition, a series of (Fe100-x Co-x)(0.33)(SiO2)(0.67) were prepared. TMR value reaches -4.5% at x = 53, while the microstructure of the film still keeps as that of Fe-0.33(SiO2)(0.67). The higher TMR ratio is contributed to the elevating of the spin polarization of particles. This is consistent with Inoue's theory.

引用

页码：734 / 737

页数：4

共 50 条

[21] Characterization of FeCo-SiO2 nanocomposite films prepared by sol-gel dip coating
Casula, MF
Corrias, A
Falqui, A
Serin, V
Gatteschi, D
Sangregorio, C
Fernández, CD
Battaglin, G
CHEMISTRY OF MATERIALS, 2003, 15 (11) : 2201 - 2207
[22] Magnetoresistance of Fe-SiO2 granular films
Yang, W
Jiang, ZS
Wang, WN
Du, YW
SOLID STATE COMMUNICATIONS, 1997, 104 (08) : 479 - 484
[23] Magnetoresistance of Fe-SiO2 granular films
Nanjing Univ, Nanjing, China
Solid State Commun, 8 (479-484):
[24] Bias voltage dependence of tunneling giant magnetoresistance in heterogeneous Fe-SiO2 granular films
Honda, S
Nawate, M
Umemoto, T
Mitsudo, S
Mitani, S
Fujimori, H
Motokawa, M
IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (05) : 2955 - 2957
[25] Bias voltage dependence of tunneling giant magnetoresistance in heterogeneous Fe-SiO2 granular films
Shimane Univ, Matsue, Japan
IEEE Trans Magn, 5 pt 1 (2955-2957):
[26] FeCo-SiO2 nanocomposite aerogels by high temperature supercritical drying
Casula, MF
Corrias, A
Paschina, G
JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (05) : 1505 - 1510
[27] Magnetorefractive effect in granular films with tunneling magnetoresistance
I. V. Bykov
E. A. Gan’shina
A. B. Granovskii
V. S. Gushchin
Physics of the Solid State, 2000, 42 : 498 - 502
[28] Magnetorefractive effect in granular films with tunneling magnetoresistance
Bykov, IV
Gan'shina, EA
Granovskii, AB
Gushchin, VS
PHYSICS OF THE SOLID STATE, 2000, 42 (03) : 498 - 502
[29] Tunneling magnetoresistance in (001)-oriented FeCo/MgO/FeCo magnetic tunneling junctions grown by sputtering deposition
Moriyama, T.
Ni, C.
Wang, W. G.
Zhang, X.
Xiao, John Q.
APPLIED PHYSICS LETTERS, 2006, 88 (22)
[30] Giant magnetoresistance in granular Fe-SiO2 films
Zhao, B
Yan, X
PHYSICA A, 1997, 241 (1-2): : 367 - 376

← 1 2 3 4 5 →