Giant volume magnetostriction due to the itinerant electron metamagnetic transition in La(Fe-Si)13 compounds
Giant volume magnetostriction due to the itinerant electron metamagnetic transition in La(Fe-Si)13 compounds
复制标题
DOI：
10.1109/20.800668
复制
发表时间：
1999-09-01
影响因子：
2.1
通讯作者：
Fukamichi, K
中科院分区：
文献类型：
--
作者：
Fujita, A;Fukamichi, K
La（FexSi 1-x）（13）铁磁化合物（x ≥ 0.87）在居里温度T-C以上表现出巡游变磁相变，相变引起的体积变化约为1.5%，具有作为超磁致伸缩材料的实际应用前景。为了将T-C调整到室温附近，研究了用其他磁性元素替代对居里温度的影响。La（Fe 0.88CoySi 0.12-y）（13）化合物的居里温度随y的增加而升高，在T-C以上出现巡游电子变磁转变。当y=0.03和0.04时，在250 K附近观察到由巡游变磁转变引起的0.6 ~ 0.9%的体积变化或0.2 ~ 0.3%的线性变化。
Ferromagnetic La(FexSi1-x)(13) compounds with x greater than or equal to 0.87 show an itinerant metamagnetic transition above the Curie temperature T-C since a large volume change of about 1.5% is caused by the transition, the present compounds have a possibility for practical applications as giant magnetostrictive materials. To adjust T-C around room temperature, the effect of the substitution by other magnetic elements on the Curie temperature was examined. The Curie temperature of La(Fe0.88CoySi0.12-y)(13) compounds increases with increasing y and the itinerant electron metamagnetic transition appears above T-C. For y=0.03 and 0.04, a huge volume change of 0.6 similar to 0.9 %, or a linear change of 0.2 similar to 0.3%, due to the itinerant metamagnetic transition is observed around 250K.