Nanodispersed DO3-phase nanostructures observed in magnetostrictive Fe-19% Ga Galfenol alloys

被引：82
作者：
Bhattacharyya, Somnath [1 ]
Jinschek, J. R. [1 ,2 ]
Khachaturyan, A. [3 ]
Cao, H. [1 ]
Li, J. F. [1 ]
Viehland, D. [1 ]
机构：
[1] Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA
[2] Virginia Tech, Inst Crit Technol & Appl Sci, Blacksburg, VA 24061 USA
[3] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.77.104107
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Few nanometer large (<2 nm) inclusions of DO3-phase structure have been identified in the A2 matrix of highly magnetostrictive Fe-19% Ga alloys by high-resolution transmission electron microscopy (HRTEM). In addition, we have found that these nanostructures include a high density of {100} line defects with a Burgers vector of a(bcc)/2 < 100 >. This dispersion of DO3-phase nanostructures formed within the main A2 matrix and the lifting of their coherency by defects are consistent with a recent theory for the structure and properties of magnetostrictive Fe-Ga and Fe-Al alloys.
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页数：6
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