Pressure dependence of magnetic states in Laves Phase RCo2 (R = Dy, Ho, and Er) compounds probed by XMCD

doi:10.1088/1742-6596/190/1/012021

Pressure dependence of magnetic states in Laves Phase RCo₂ (R = Dy, Ho, and Er) compounds probed by XMCD

S Watanabe et al 2009 J. Phys.: Conf. Ser. 190 012021 (4pp) doi: 10.1088/1742-6596/190/1/012021

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S Watanabe¹, N Ishimatsu¹, H Maruyama¹, J Chaboy², M A Laguna-Marco², R Boada² and N Kawamura³
¹ Grad. Sch. of Sci., Hiroshima Univ., 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739–8526, Japan
² Instituto de Ciencia de Materiales de Aragon, CSIC-Universidad de Zaragona, 50009 Zaragona, Spain
³ JASRI/Spring-8, 1-1-1 Kouto, Sayo, Hyogo 679–5198, Japan
E-mail: naoki@sci.hiroshima-u.ac.jp

Abstract. In order to probe pressure-induced modification in Co magnetic state in Laves phase RCo₂ (R = Dy, Ho, and Er) compounds, we have measured X-ray magnetic circular dichroism (XMCD) under high pressure. The R L₂-edge XMCD indicates that Co magnetic moment M_Co gradually decreases as the pressure increases. The Co K-edge XMCD shows that the effect of R molecular field is significantly suppressed under high pressure. As a result, it is revealed that the pressure variation of M_Co is closely associated with R-Co interaction. The Co magnetic state is separately discussed from that of R partner.

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Pressure dependence of magnetic states in Laves Phase RCo₂ (R = Dy, Ho, and Er) compounds probed by XMCD

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