NMR studies of ordered structures and valence states in the successive valence-transition system EuPtP

T. Mito, K. Nishitani, T. Koyama, H. Muta, T. Maruyama, G. Pristáš, K. Ueda, T. Kohara, A. Mitsuda, M. Sugishima, H. Wada

研究成果: ジャーナルへの寄稿学術誌査読

3 被引用数 (Scopus)

抄録

We have studied EuPtP, which undergoes two successive valence transitions at TA∼240 K and TB∼200 K by P31-nuclear magnetic resonance (NMR) measurements. From the analysis of NMR spectra, we obtained plausible ordered structures and Eu valence states in three phases divided by TA and TB. These ordered structures well explain observed inequivalent P sites and the intensity ratio of the NMR spectra arising from these P sites. The results are also in good accordance with mean Eu valence measured by the x-ray absorption spectroscopy. We also discuss Eu 4f states and the origin of the transitions from the measurements of nuclear spin lattice relaxation rate and hyperfine coupling constant.

本文言語英語
論文番号195106
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
90
19
DOI
出版ステータス出版済み - 11月 4 2014

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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