Effect of mechanical alloying on the pressure dependence of the Curie temperature of Ni-20 at % Mn alloy

被引：3

作者：

Sun, NQ

Matsushima, Y

Nishida, D

Kobayashi, T

Matsushita, M

Endo, S

Ono, F

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[2] Chiba Inst Sci, Dept Environm Secur Syst, Choshi, Chiba 2880025, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 301卷 / 01期

关键词：

Ni-Mn alloys; pressure effect; magnetic-phase transition; mechanical alloys;

D O I：

10.1016/j.jmmm.2005.06.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AC susceptibility measurements in mechanically alloyed (MA) Ni-20 at% Mn were made under hydrostatic pressures up to 7.5 GPa. The results were compared with a bulk alloy made by the conventional method of melting. The Curie temperature decreased with pressure at the rate of -6.9 and -8.0 K/GPa in MA and the bulk alloy, respectively. The transition temperature to the reentrant spin glass state increased at the rate of 1.2 and 1.7 K/GPa in MA and the bulk alloy, respectively. The results were explained by assuming a Gaussian distribution of concentration fluctuation. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：37 / 43

页数：7

共 27 条

[1] MAGNETIC PHASE-DIAGRAM OF DISORDERED NI-MN NEAR THE MULTICRITICAL POINT [J].