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Phys. Rev. B 56, 6021–6030 (1997)

Magnetic circular dichroism in the soft-x-ray absorption spectra of Mn-based magnetic intermetallic compounds

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A. Kimura, S. Suga, T. Shishidou, S. Imada, and T. Muro
Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka 560, Japan

S. Y. Park and T. Miyahara
Photon Factory, National Laboratory for High Energy Physics, Oho 1-1, Tsukuba, Ibaraki 305, Japan

T. Kaneko
The Research Institute for Iron, Steel and Other Metals, Tohoku University, Katahira, Sendai, Miyagi 980, Japan

T. Kanomata
Department of Applied Physics, Faculty of Technology, Tohoku Gakuin University, Tagajo, Miyagi 985, Japan

Received 30 September 1996; revised 15 May 1997; published in the issue dated 1 September 1997

We have investigated the magnetic electronic structures of PtMnSb, NiMnSb, Ni2MnSb,MnSb, MnAlGe, and Mn2Sb by soft-x-ray absorption spectroscopy (XAS) and magnetic circular dichroism (MCD) measurements in the Mn 2p core absorption region. Different degrees of the electron itinerancy of the Mn 3d states are discussed. The large orbital angular momentum of the Mn 3d electrons is revealed for MnSb by the MCD spectrum. In addition, the XAS and MCD spectra are measured in the Sb 3d, Ni 2p, and Pt 4f core excitation regions. An induced magnetic moment of Sb valence orbitals with the spin antiparallel to that of Mn is clearly indicated for NiMnSb and Mn2Sb.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.56.6021
DOI:
10.1103/PhysRevB.56.6021
PACS:
75.25.+z, 75.50.Cc, 78.70.Dm
 
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