Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | AIP Conference Proceedings |
| Pages | 425-427 |
| Number of pages | 3 |
| Volume | 882 |
| DOIs | |
| Publication status | Published - 2007 |
| Event | X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference - Stanford, CA, United States Duration: Jul 9 2006 → Jul 14 2006 |
Other
| Other | X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference |
|---|---|
| Country | United States |
| City | Stanford, CA |
| Period | 7/9/06 → 7/14/06 |
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Keywords
- Er-L edges
- XAS
- XMCD
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
X-ray magnetic circular dichroism at L edges of Er in laves phase compounds. / Harada, Isao; Fujiwara, Atsushi; Kotani, Akio.
AIP Conference Proceedings. Vol. 882 2007. p. 425-427.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
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
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
VL - 882
SP - 425
EP - 427
BT - AIP Conference Proceedings
ER -