N Kawamura et al 2009 J. Phys.: Conf. Ser. 190 012020 doi:10.1088/1742-6596/190/1/012020
X-ray magnetic circular dichroism at Os L-edge under multiple extreme conditions in SmOs4Sb12
N Kawamura1, S Tsutsui1, M Mizumaki1, N Ishimatsu2, H Maruyama2, H Sugawara3 and H Sato4
Show affiliationsX-ray absorption spectrum (XAS) and X-ray magnetic circular dichroism (XMCD) in a filled skutterudite SmOs4Sb12 were measured at Os L-edge under multiple extreme conditions, T = 2.2 K, H = 10 T, and P up to 3.5 GPa in order to obtain information of Os 5d electronic states. At ambient pressure, small dichroic signal of 0.1% was clearly observed and the orbital and spin magnetic moments of Os 5d are estimated to be -0.001 μB and 0.012 μB, respectively. At high pressure, the XMCD intensity reaches a maximum around 0.6 GPa, and decreases with increasing pressure as to finally disappear at 3.5 GPa. This trend is similar to the reported magnetization under high pressure. The behavior of Os 5d electronic states strongly connects with a novel feature observed in SmOs4Sb12.
- PACS
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78.20.Ls Magnetooptical effects
78.70.Dm X-ray absorption spectra
75.30.Cr Saturation moments and magnetic susceptibilities
71.20.Eh Rare earth metals and alloys
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
- Subjects
- Dates
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Issue 1 (2009)
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X-ray magnetic circular dichroism at Os L-edge under multiple extreme conditions in SmOs4Sb12
N Kawamura et al 2009 J. Phys.: Conf. Ser. 190 012020
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