X-ray magnetic circular dichroism study on ferromagnetic Pd nanoparticles

Y. Oba; H. Okamoto; T. Sato; T. Shinohara; J. Suzuki; T. Nakamura; T. Muro; H. Osawa

doi:10.1088/0022-3727/41/13/134024

X-ray magnetic circular dichroism study on ferromagnetic Pd nanoparticles

Y. Oba, H. Okamoto, T. Sato, T. Shinohara, J. Suzuki, T. Nakamura, T. Muro, H. Osawa

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

An x-ray magnetic circular dichroism (XMCD) experiment was performed for freestanding Pd nanoparticles which were prepared in a high purity atmosphere and showed ferromagnetism. We observed the XMCD signal at Pd M_2,3 absorption edges of nanoparticles. This is clear experimental evidence of ferromagnetic moment in pure Pd. Using the sum rules, the ratio of orbital to spin magnetic moments m_L/m_S of ∼0.1 was obtained. In the x-ray absorption spectrum, the intensities of white lines increased in Pd nanoparticles relative to the bulk. This shows the increase in the number of unoccupied 4d states n_h which can contribute to the appearance of ferromagnetism in Pd.

Original language	English
Article number	134024
Journal	Journal of Physics D: Applied Physics
Volume	41
Issue number	13
DOIs	https://doi.org/10.1088/0022-3727/41/13/134024
Publication status	Published - 2008 Jul 7

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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10.1088/0022-3727/41/13/134024

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abstract = "An x-ray magnetic circular dichroism (XMCD) experiment was performed for freestanding Pd nanoparticles which were prepared in a high purity atmosphere and showed ferromagnetism. We observed the XMCD signal at Pd M2,3 absorption edges of nanoparticles. This is clear experimental evidence of ferromagnetic moment in pure Pd. Using the sum rules, the ratio of orbital to spin magnetic moments mL/mS of ∼0.1 was obtained. In the x-ray absorption spectrum, the intensities of white lines increased in Pd nanoparticles relative to the bulk. This shows the increase in the number of unoccupied 4d states nh which can contribute to the appearance of ferromagnetism in Pd.",

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AU - Oba, Y.

AU - Okamoto, H.

AU - Sato, T.

AU - Shinohara, T.

AU - Suzuki, J.

AU - Nakamura, T.

AU - Muro, T.

AU - Osawa, H.

PY - 2008/7/7

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N2 - An x-ray magnetic circular dichroism (XMCD) experiment was performed for freestanding Pd nanoparticles which were prepared in a high purity atmosphere and showed ferromagnetism. We observed the XMCD signal at Pd M2,3 absorption edges of nanoparticles. This is clear experimental evidence of ferromagnetic moment in pure Pd. Using the sum rules, the ratio of orbital to spin magnetic moments mL/mS of ∼0.1 was obtained. In the x-ray absorption spectrum, the intensities of white lines increased in Pd nanoparticles relative to the bulk. This shows the increase in the number of unoccupied 4d states nh which can contribute to the appearance of ferromagnetism in Pd.

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X-ray magnetic circular dichroism study on ferromagnetic Pd nanoparticles

Abstract

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