Magnetic properties and magnetovolume effects have been investigated for itinerant-electron metamagnetic La(FexSi1-x)13 compounds. At the Curie temperature TC1, a first-order magnetic phase transition takes place in the concentration range 0.86 ≤ x ≤ 0.88. With increasing Fe concentration, the Curie temperature decreases and the critical temperature of the itinerant-electron metamagnetic (IEM) transition increases, accompanied by a more sharp IEM transition. For the compound with x = 0.88, a large volume change of about 1% follows the thermal induced transition at TC1. The value of TC1 is significantly decreased by applying hydrostatic pressure, whereas the pressure dependence of the spontaneous magnetization is relatively small. These results are explained by the negative mode-mode coupling among spin fluctuations.
|Number of pages||6|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2002 Jan 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics