Microstructure and magnetic properties of Ni50Mn37Sn13 Heusler alloy ribbons

被引：93

作者：

Santos, J. D. ^{[1
]}

Sanchez, T. ^{[1
]}

Alvarez, P. ^{[1
]}

Sanchez, M. L. ^{[1
]}

Llamazares, J. L. Sanchez ^{[1
]}

Hernando, B. ^{[1
]}

Escoda, Ll. ^{[2
]}

Sunol, J. J. ^{[2
]}

Varga, R. ^{[3
]}

机构：

[1] Univ Oviedo, Dept Fis, Fac Ciencias, E-33007 Oviedo, Spain

[2] Univ Girona, Girona 17003, Spain

[3] UPJS, Inst Phys, Fac Sci, Kosice, Slovakia

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期

关键词：

All Open Access; Green;

D O I：

10.1063/1.2832330

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Heusler alloy Ni50Mn37Sn13 was successfully produced as ribbon flakes of thickness around 7-10 mu m melt spinning. Fracture cross section micrographs in the ribbon show the formation of a microcrystalline columnarlike microstructure, with their longer axes perpendicular to the ribbon plane. Phase transition temperatures of the martensite-austenite transformation were found to be M-S=218 K, M-f=207 K, A(S)=224 K, and A(f)=232 K; the thermal hysteresis of the transformation is 15 K. Ferromagnetic L2(1) bcc austenite phase shows a Curie point of 313 K, with cell parameter a=0.5971(5) nm at 298 K, transforming into a modulated 7M orthorhombic martensite with a=0.6121(7) nm, b=0.6058(8) nm, and c=0.5660(2) nm, at 150 K. (C) 2008 American Institute of Physics.

引用

页数：3