Ni2MnGaxAl1-xホイスラ一合金の相安定性と磁気特性
作者单位：东北大学大学院工学研究科 东北大学大学院工学研究科 东北大学多元物质科学研究所 东北大学多元物质科学研究所 东北大学大学院工学研究科
会议名称：《第十三届全国相图学术会议暨中日双边相图、材料设计及其应用研讨会》
会议日期：2006年
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
关 键 词：Ni2MnGaxAl 安定性
摘 要：The B2/L2 order-disorder transition temperature and magnetic properties in NiMnGaAl （0≤x≤1） alloys were investigated by differential scanning calorimetry （DSC）,vibrating sample magnetometer （VSM） and superconducting quantum interference devices （SQUID） *** of the crystal structures and microstructures of the specimens were performed by electron diffraction and transmission electron microscopic （TEM） *** was found that the transition temperature from the B2 to L2-type phase T monotonically increases with increasing x,while the Curie temperatures T of the L2-type phase are insensitive to x, being about 109℃ in a concentration range above x=*** B2-type phase with antiferromagnetic state is obtained by quenching above T in a concentration range below x=*** close correlation between the degree of long-range order and magnetic properties is also discussed.