研究了Ni53Mn22Ga25磁性记忆合金在190～390 K温度范围的内耗行为.结果表明,当合金发生正、逆马氏体相变时出现明显的内耗峰,并伴随模量变化出现极小值.马氏体相变后继续降温,在215 K附近出现新的内耗峰,模量明显增高.合金在居里温度发生顺磁及铁磁正反转变时,内耗及模量均不发生变化.对上述现象进行了分析和讨论.
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