RT Journal Article
T1 Pressure effects on the magnetic properties of FeCuZr studied by x-ray magnetic circular dichroism: Evidence of weakening of ferromagnetism in FeCuZr alloys
A1 Martínez, A
A1 Romero, J.J.
A1 Bartolome, F.
A1 Garcia, L.M.
A1 Baudelet, F.
A1 Hernando Grande, Antonio
A1 Crespo del Arco, Patricia
AB The room temperature changes of the magnetic behavior under pressure of an invar alloy of nominal composition [Fe_(0.5)Cu_(0.5)]_(87)Zr_(13) (at. %) has been studied by K-edge x-ray magnetic  circular dichroism (XMCD) and x-ray absorption near edge spectroscopy (XANES). The Curie temperature, as determined from low field magnetization measurements, is (255 ± 15) K. However XMCD shows a non negligible signal above this temperature. In addition, the XMCD signal decreases upon increasing pressure indicating a pressure-induced collapse of the magnetic moment. These results evidence the itinerant character of FeCuZr alloys as well as the occurrence of magnetovolume effects characterized by a strong dependence of the 3d band on the Fe-Fe nearest neighbor distances.
PB Amer Inst Physics
SN 0003-6951
YR 2012
FD 2012-07-02
LK https://hdl.handle.net/20.500.14352/42605
UL https://hdl.handle.net/20.500.14352/42605
LA eng
NO ©2012 American Institute of Physics. This work was supported by Spanish MICINN under MAT2009-14741-C02-01, MAT11/1077, Consolider-Ingenio in Molecular Nanoscience, CSD2007-00010
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 12 abr 2025