Magnetoresistance of Fe-Ta-O films prepared by RF plasma jet method

被引：5

作者：

Kraus, L

Chayka, O

Tous, J

Fendrych, F

Pirota, KR

Sícha, M

Jastrabík, L

机构：

[1] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic

[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷

关键词：

nanogranular alloys; magnetoresistance;

D O I：

10.1016/S0304-8853(00)01047-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structure, magnetic and electric properties of Fe-Ta-O films prepared by the RF plasma jet technique were investigated. With increasing content of O the conductance changes from metallic to tunnelling one. In some films with the Fe/Ta ratio close to 0.25 the superparamagnetic properties and spin-dependent tunnelling magneto resistance (with Delta rho/rho up to 1.5% at 77.3 K) were observed. The behavior can be explained by the nanogranular structure consisting of ferromagnetic metallic grains embedded in an insulating amorphous matrix. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：669 / 670

页数：2

共 4 条

[1] RF GENERATION OF THE PLASMA-JET CHANNEL FOR THE JET PCVD [J].