TY - JOUR
T1 - Large magnetovolume effects and band structure of itinerant-electron metamagnetic La(FexSi1−x)13 compounds
AU - Fujita, A.
AU - Fukamichi, K.
AU - Wang, J. T.
AU - Kawazoe, Y.
PY - 2003
Y1 - 2003
N2 - Among Fe-based ferromagnets, La(FexSi1−x)13 compounds are the first example realizing the itinerant-electron metamagnetic transition from the paramagnetic to the ferromagnetic state, accompanied by a marked magnetovolume effects. The effect of pressure on the Curie temperature is one order larger than that on the spontaneous magnetization in analogy with the results for Fe-Pt invar-type alloys. The large pressure coefficient of TC, d ln TC/dP, is attributed to the renormalization effect caused by spin fluctuations for free energy. The metamagnetic transition and the marked magnetovolume effects in the present compounds are related to the characteristic 3d band structures in analogy with Fe-Pt alloys in both the ferromagnetic and paramagnetic states.
AB - Among Fe-based ferromagnets, La(FexSi1−x)13 compounds are the first example realizing the itinerant-electron metamagnetic transition from the paramagnetic to the ferromagnetic state, accompanied by a marked magnetovolume effects. The effect of pressure on the Curie temperature is one order larger than that on the spontaneous magnetization in analogy with the results for Fe-Pt invar-type alloys. The large pressure coefficient of TC, d ln TC/dP, is attributed to the renormalization effect caused by spin fluctuations for free energy. The metamagnetic transition and the marked magnetovolume effects in the present compounds are related to the characteristic 3d band structures in analogy with Fe-Pt alloys in both the ferromagnetic and paramagnetic states.
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U2 - 10.1103/PhysRevB.68.104431
DO - 10.1103/PhysRevB.68.104431
M3 - Article
AN - SCOPUS:0142182555
SN - 0163-1829
VL - 68
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
ER -