Magnetic circular x-ray dichroism study

J. Okamoto, H. Miyauchi, T. Sekine, T. Shidara, T. Koide, K. Amemiya, A. Fujimori, T. Saitoh, A. Tanaka, Y. Takeda, M. Takano

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Abstract

The ferromagnetic oxide (Formula presented) has been studied by magnetic circular x-ray dichroism (MCXD) in core-level absorption. In the Co (Formula presented) absorption, the orbital and spin magnetic moments of the Co (Formula presented) are deduced with the use of magneto-optical sum rules and compared with magnetization measurements. In the O (Formula presented) absorption, large negative MCXD structures are observed, showing that the O (Formula presented) orbitals are heavily mixed with the Co (Formula presented) orbitals and that the orbital magnetic moment of O (Formula presented) is parallel to the orbital magnetic moment of Co (Formula presented) and the total magnetic moment. The relative magnitudes of the spin and orbital magnetic moments are most consistently interpreted based on the intermediate-spin states of Co (Formula presented) within the ionic model, although the absolute values of the spin and orbital magnetic moments are found to be smaller, probably indicating that the itinerant electron description of the Co (Formula presented) states is more appropriate in (Formula presented).

Original languageEnglish
Pages (from-to)4455-4458
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number7
DOIs
Publication statusPublished - 1 Jan 2000

Cite this

Okamoto, J., Miyauchi, H., Sekine, T., Shidara, T., Koide, T., Amemiya, K., Fujimori, A., Saitoh, T., Tanaka, A., Takeda, Y., & Takano, M. (2000). Magnetic circular x-ray dichroism study. Physical Review B - Condensed Matter and Materials Physics, 62(7), 4455-4458. https://doi.org/10.1103/PhysRevB.62.4455