Influence of three-dimensional transition elements on magnetic and structural phase transitions of Ni-Mn-Ga alloys
Influence of three-dimensional transition elements on magnetic and structural phase transitions of Ni-Mn-Ga alloys
复制标题
DOI：
10.1063/1.1641184
复制
发表时间：
2004-01
影响因子：
3.2
通讯作者：
A. Cherechukin;T. Takagi;H. Miki;M. Matsumoto;M. Ohtsuka
中科院分区：
文献类型：
--
作者：
A. Cherechukin;T. Takagi;H. Miki;M. Matsumoto;M. Ohtsuka
采用差示扫描量热法和磁性测量研究了铁磁性三维过渡元素Fe和Co对铁磁性形状记忆合金Ni-Mn-Ga的结构和磁性的影响。用Fe或Co替代Ni降低了马氏体相变温度Tm，而用Co替代Mn则使Tm显著提高。磁性测量结果表明，Fe或Co取代Ni后，居里温度TC升高。这对高温铁磁形状记忆合金的设计具有一定的指导意义。
Differential scanning calorimetry and magnetic measurements were performed to study the influence of the ferromagnetic three-dimensional transition elements Fe and Co on the structural and magnetic properties of the ferromagnetic shape memory alloys Ni-Mn-Ga. Substitution of Fe or Co for Ni decreases the temperature of martensitic phase transition Tm, whereas substitution of Co for Mn results in a considerable increase of Tm. Magnetic measurement revealed that Curie temperature TC increased upon substitution of Fe or Co for Ni. This may be useful for design of high-temperature ferromagnetic shape memory alloys.