TY - GEN
T1 - X-ray magnetic circular dichroism at L edges of Er in laves phase compounds
AU - Harada, Isao
AU - Fujiwara, Atsushi
AU - Kotani, Akio
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007
Y1 - 2007
N2 - X-ray magnetic circular dichroism (XMCD) of the Er L absorption-edges is studied in the Laves phase compound ErFe2 in order to confirm the mechanism proposed: XMCD spectra are dominated by the electric dipole transition from the core 2p states to the magnetically polarized Er 5d states, which are caused by (i) the intra-atomic exchange interaction of 4f electrons, with the enhancement of the dipole matrix element, as well as by (ii) the hybridization with the spin-polarized Fe 3d states. In addition, (iii) the electric quadrupole transition contributes appreciably. We point out that one can observe a novel temperature effect on the XMCD spectrum of Er at L2 edge, since it consists of the contributions (i), (ii) and (iii) having a comparable order of magnitude but different signs and temperature dependences. We discuss the resultant temperature dependence of the XMCD spectrum with that recently observed in ErFe2.
AB - X-ray magnetic circular dichroism (XMCD) of the Er L absorption-edges is studied in the Laves phase compound ErFe2 in order to confirm the mechanism proposed: XMCD spectra are dominated by the electric dipole transition from the core 2p states to the magnetically polarized Er 5d states, which are caused by (i) the intra-atomic exchange interaction of 4f electrons, with the enhancement of the dipole matrix element, as well as by (ii) the hybridization with the spin-polarized Fe 3d states. In addition, (iii) the electric quadrupole transition contributes appreciably. We point out that one can observe a novel temperature effect on the XMCD spectrum of Er at L2 edge, since it consists of the contributions (i), (ii) and (iii) having a comparable order of magnitude but different signs and temperature dependences. We discuss the resultant temperature dependence of the XMCD spectrum with that recently observed in ErFe2.
KW - Er-L edges
KW - XAS
KW - XMCD
UR - http://www.scopus.com/inward/record.url?scp=33947404789&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947404789&partnerID=8YFLogxK
U2 - 10.1063/1.2644547
DO - 10.1063/1.2644547
M3 - Conference contribution
AN - SCOPUS:33947404789
SN - 0735403848
SN - 9780735403840
T3 - AIP Conference Proceedings
SP - 425
EP - 427
BT - X-RAY ABSORPTION FINE STRUCTURE - XAFS13
T2 - X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference
Y2 - 9 July 2006 through 14 July 2006
ER -