Giant magnetocaloric effect in Gd-5(Si2Ge2)
Giant magnetocaloric effect in Gd-5(Si2Ge2)
复制标题
DOI：
10.1103/physrevlett.78.4494
复制
发表时间：
1997-06-09
影响因子：
8.6
通讯作者：
Gschneidner, KA
中科院分区：
文献类型：
--
作者：
Pecharsky, VK;Gschneidner, KA
在Gd-5(Si2Ge2)中发现了一个极大的磁熵变化，当受到磁场变化时。它超过了任何已知磁性材料的可逆(相对于交变磁场)磁热效应至少2倍，这是由于276K的一级[铁磁(I)铁磁(II)]相变及其独特的磁场相关性。
An extremely large magnetic entropy change has been discovered in Gd-5(Si2Ge2) when subjected to a change in the magnetic field. It exceeds the reversible (with respect to an alternating magnetic field) magnetocaloric effect in any known magnetic material by at least a factor of 2, and it is due to a first order [ferromagnetic (I) ferromagnetic (II)] phase transition at 276 K and its unique magnetic field dependence.