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11.发明申请公开(公告)号：US20040003870A1
公开(公告)日：2004-01-08
申请号：US10285180
申请日：2002-10-31
发明人： Zheng Liu
IPC分类号： H01F001/055
摘要： The present invention relates to a high performance rare earth-iron giant magnetostrictive material of the formula (Tbx1Dyx2Smx3Hox4Rx5)(Sy1Py2Fe1nully1nully2nully3Ty3)Q obtained by using an industry grade pure iron, instead of physically pure iron such as electrolyzed pure iron or hydrogen reduced pure iron, as iron source. The invention relates also to a method of preparing the giant magnetostrictive material.
摘要翻译： 本发明涉及通过使用工业级纯铁获得的式（Tbx1Dyx2Smx3Hox4Rx5）（Sy1Py2Fe1-y1-y2-y3Ty3）Q的高性能稀土铁巨磁致伸缩材料，而不是物理纯铁如电解纯铁 或氢还原纯铁，作为铁源。 本发明还涉及制备巨磁致伸缩材料的方法。
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公开(公告)号：US20030051774A1
公开(公告)日：2003-03-20
申请号：US10098568
申请日：2002-03-18
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
IPC分类号： H01F001/055
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2，（Ti，Sc）Fe 2和（Nb，Mo）Fe 2，每个含有50至60原子％的过渡金属 如Fe。
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