Development of NiMnGa-based ferromagnetic shape memory alloy by rapid solidification route

被引：7

作者：

Panda, A. K. ^{[1
]}

Kumar, Arvind ^{[1
]}

Ghosh, M. ^{[1
]}

Mitra, A. ^{[1
]}

机构：

[1] Natl Met Lab, Jamshedpur 831007, Bihar, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 20期

关键词：

shape memory alloy; melt-spun ribbons; martensitic transformation; magnetisation;

D O I：

10.1016/j.jmmm.2008.04.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ferromagnetic shape memory alloy with nominal composition of Ni(52.5)Mn(24.5)Ga(23)(at%) was developed by the melt-spinning technique. The as-spun ribbon showed dominant L2(1) austenitic (cubic) structure with splitting of primary peak in the X-ray diffractogram indicating existence of a martensitic feature. The quenched-in martensitic plates were revealed from Transmission electron microscopy (TEM). Increase of magnetisation at low-temperature rise indicates martensite to austenite transformation and its reverse with a drop in magnetisation during cooling cycle. The martensite to austenite transformation can be made spontaneous at higher magnetic field. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：E730 / E733

页数：4

共 6 条

[1] Structural and magnetic phase transitions in Ni-Mn-Ga ferromagnetic shape-memory crystals [J].