Magnetic tunnel junctions with L10-ordered FePt alloy electrodes

被引：22

作者：

Moriyama, T

Mitani, S ^{[1
]}

Seki, T

Shima, T

Takanashi, K

Sakuma, A

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Agcy, CREST, Kawaguchi 3320012, Japan

[3] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 11期

关键词：

D O I：

10.1063/1.1669212

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic tunnel junctions (MTJs) with L1(0)-ordered FePt alloy electrodes were prepared on MgO(110) substrates, and structure and magnetotransport properties of the MTJs have been investigated. Tunnel magnetoresistance (TMR) of 34% is observed at 77 K for a junction with the FePt alloy electrode in which the degree of chemical order S is estimated to be similar to0.7. From S dependence of TMR in the MTJs, it is suggested that the spin polarization of FePt alloy electrodes increases with chemical ordering, which is consistent with first principles band structure calculations. (C) 2004 American Institute of Physics.

引用

页码：6789 / 6791

页数：3

共 15 条

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CEBOLLADA A, 2002, MAGNETIC NANOSTRUCTU, pCH3

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