研究了Ni-Mn杂化对Mn_(50)Ni_(41-x)Sn_9Cu_x合金马氏体相变温度和马氏体相磁性的影响.研究表明:在Mn_(50)Ni_(41-x)Sn_9Cu_x(x=0,1,3,5)合金中,随着Cu含量增加,马氏体相变温度和居里温度均降低;自发交换偏置场也随着Cu含量的增加从1182 Oe(1 Oe=79.5775 A/m)降低到0 Oe.马氏体相变温度和马氏体相磁性的变化归因于掺杂Cu削弱了体系中Ni 3d eg与Mn 3d之间的杂化.
【英文摘要】
Due to its magnetostructural phase transition(the structural phase transition and the magnetic phase transition are strongly coupled together and occur simultaneously),Mn-based Heusler alloys exhibit attractive physical effects,such as ferromagnetic shape memory effect,magnetostrain effect,magnetocaloric effect,magnetoresistance effect,and exchange bias effect.These effects are receiving increasing attentions from the applications in actuating,sensing,magnetic cooling,heat pump,and energy conversion.However...