First principles calculations of the electronic structure of Fe1-xCoxPt

被引：18

作者：

MacLaren, JM ^{[1
]}

Willoughby, SD

McHenry, ME

Ramalingam, B

Sankar, SG

机构：

[1] Tulane Univ, Dept Phys, New Orleans, LA 70018 USA

[2] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

[3] Adv Mat Corp, Pittsburgh, PA 15230 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

基金：

美国国家科学基金会;

关键词：

binary phase diagram; coherent potential approximation; local spin density calculations; magneto-crystalline anisotropy;

D O I：

10.1109/20.950817

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The L10 alloys CoPt and FePt have strong uniaxial magneto-crystalline anisotropy as a consequence of the layering of Co or Fe and Pt planes. This makes these compounds of interest in permanent magnet applications. In this work we present the results of a study of the magnetic properties of the L10 alloys Fe1-x Cox Pt for the range of compositions from FePt to CoPt. Local spin density calculations using the coherent potential approximation are used to follow trends in the magneto-crystalline anisotropy and magnetic moments across the composition range. Total energy calculations of ordered and disordered alloys are used to develop a pseudo-binary phase diagram of the Fe/Co layer predicting regions of phase separation in this layer at temperatures below 650 °C.

引用

页码：1277 / 1279

页数：3

共 11 条

[1] The influence of microstructure on the magnetic properties in nanostructured CoPt L10 thin films [J].