Observation of field-induced magnetic and structural transitions in an antiferromagnet by means of synchrotron x-rays

Koichi Katsumata, Yoshikazu Tabata, Stephen W. Lovesey, Tetsuya Nakamura, Yoshikazu Tanaka, Susumu Shimomura, Yasuo Narumi, Tetsuya Ishikawa, Hideo Kitamura, Toru Hara, Takashi Tanaka, Kenji Tamasaku, Makina Yabashi, Shunji Goto, Haruhiko Ohashi, Kunikazu Takeshita, Toru Ohata, Tomohiro Matsushita, Teruhiko Bizen, Isao Yamada

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6 Citations (Scopus)

Abstract

In the first experiment of its kind, we have used x-ray diffraction to study magnetic and charge properties of an antiferromagnet as a function of an applied magnetic field H. The intensity of hard x-rays diffracted at the space-group-forbidden reflection (3, 0, 0) of MnF2 with H parallel to the easy axis at H = Hc/√2 shows evidence of a spin-flop transition associated with the surface magnetization, and at Hc = 9.3 T a spin-flop transition in the bulk. Above Hc we found intensity much larger than that predicted for purely magnetic scattering. We attribute the unexpected intensity to charge scattering created by a field-induced structural phase transition.

Original languageEnglish
Pages (from-to)L619-L623
JournalJournal of Physics Condensed Matter
Volume14
Issue number37
DOIs
Publication statusPublished - 2002 Sep 23

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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    Katsumata, K., Tabata, Y., Lovesey, S. W., Nakamura, T., Tanaka, Y., Shimomura, S., Narumi, Y., Ishikawa, T., Kitamura, H., Hara, T., Tanaka, T., Tamasaku, K., Yabashi, M., Goto, S., Ohashi, H., Takeshita, K., Ohata, T., Matsushita, T., Bizen, T., & Yamada, I. (2002). Observation of field-induced magnetic and structural transitions in an antiferromagnet by means of synchrotron x-rays. Journal of Physics Condensed Matter, 14(37), L619-L623. https://doi.org/10.1088/0953-8984/14/37/102