物理学报Issue(19)：453-457,5.DOI:10.7498/aps.62.197501
替代掺杂的MnNiGe1-x Gax合金中马氏体相变和磁-结构耦合特性
Martensitic transformation and magnetic properties in Ga-doped M M′X alloy MnNiGe1-x Gax (x=0-0.30)
摘要
Abstract
The characteristics of martensitic transformation and magnetostructural coupling have been investigated for MnNiGe1−x Gax (x=0-0.30) alloys. It has been found that the martensitic transformation temperature of the system can be deceased about 400 K by doping a low content of Ga to substitute for Ge. Adding Ga may weaken the hybridization and at the same time enhance the magnetic exchange interaction, which are responsible for the increase of the atomic moment and the Curie temperature in the austenitic phase. The structural and magnetic phase diagram was obtained to show some important points: 1) the decreased transition temperature successively pass through the Neel temperature and the Curie temperature; 2) the Curie temperature window still opens during the doping; 3) the magnetism can effectively affect the transformation behavior. The metamagnetization and the preparation influence on the transformation are also observed. These properties are significantly beneficial to the development of new magnetostructural materials.关键词
MM’X合金/马氏体相变/磁有序温度/变磁转变Key words
MM′X alloy/martensitic transformation/Curie temperature/metamagnetic transition引用本文复制引用
张玉洁,刘恩克,张红国,李贵江,陈京兰,王文洪,吴光恒..替代掺杂的MnNiGe1-x Gax合金中马氏体相变和磁-结构耦合特性[J].物理学报,2013,(19):453-457,5.基金项目
国家自然科学基金(批准号:51171206)资助的课题 （批准号:51171206）
