Journal of Changshu Institute of Technology2012，Vol.26Issue(2)：36-40,5.
高锰含量Mn50＋xNi41-xSn9合金的相变和磁热效应
The Phase Transitions and Magnetocaloric Effect in Mn-rich Mn50＋xNi41-xSn9 Alloys
摘要
Abstract
Mn50＋xNi41-xSn9ferromagnetic shape memory alloys were prep.ared by arc melting, and their magnetic prop-erties, phase transitions, and magnetocaloric effect were investigated. All the alloys show the coexistence of tetrago-nal L10 structure and cubic Hg2CuTi structure. The martensitic transformation temperatures decrease with the in-crease of Mn content, which can be attributed to the increase of valence electron concentration. In the composition range of 2≤x≤4, great changes in both magnetization and magnetic entropy across martensitic transformation are observed. These results suggest the great potential of Mn50＋xNi41-xSn9 alloys as magnetic refrigerant.关键词
铁磁形状记忆合金/马氏体相变/磁熵变Key words
ferromagnetic shape memory alloy/martensitic transformation/magnetic entropy change分类
数理科学引用本文复制引用
韩志达,郑志华..高锰含量Mn50＋xNi41-xSn9合金的相变和磁热效应[J].Journal of Changshu Institute of Technology,2012,26(2):36-40,5.基金项目
国家自然科学基金青年基金项目“Ni-Mn基铁磁形状记忆合金的磁热效应研究” （）
