Open AccessHo–Fe–Garnet soft XMCD measurements below and above the compensation temperature
Author(s) -
Goering E.,
Gold S.,
Schütz G.
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500018355
Subject(s) - holmium , magnetic circular dichroism , magnetism , octahedron , magnetization , condensed matter physics , ground state , materials science , observable , tetrahedron , compensation (psychology) , ferromagnetism , gadolinium , magnetic moment , nuclear magnetic resonance , crystallography , chemistry , crystal structure , physics , optics , atomic physics , magnetic field , metallurgy , spectral line , laser , quantum mechanics , astronomy , psychology , psychoanalysis
We have investigated the magnetism of Holmium‐Iron‐Garnet (Ho 3 Fe 5 O 12 ) at the Ho M 4,5 ‐ the Fe L 2,3 ‐ and the O K ‐ edges. As expected switching of the sub‐lattice magnetization is observed at the compensation temperature. We will give detailed analysis of the Ho and Fe XMCD signals, using sum rules. Fe dichroism is analyzed in terms of 3d ground state moments and compared to Gadolinium‐Iron‐Garnet (Gd 3 Fe 5 O 12 ). Contributions of octahedral and tetrahedral Fe sites could be separated and analyzed quantitatively. At the oxygen K edge two different structures are observable. Those structures show different temperature dependencies. Therefore we address these features separately to Fe and Rare Earth contributions.