High-pressure structural analysis of (Nd, Sm)1/2Sr1/2MnO3: Origin for pressure-induced charge ordering

A. Kuriki, Y. Moritomo, A. Machida, E. Nishibori, M. Takata, M. Sakata, Y. Ohishi, O. Shimomura, A. Nakamura

研究成果: Article査読

9 被引用数 (Scopus)

抄録

Pressure effects on the structural parameters are investigated in a half-doped manganites (Nd0.125Sm0.875)1/2Sr1/2 MnO3, by means of the synchrotron-radiation x-ray powder diffraction measurement. The compound shows a pressure-induced metal-insulator transition due to the subtle competition between the double-exchange interaction and the charge-ordering instability [Y. Tokura et al., Phys. Rev. Lett. 76, 3184 (1996)]. We have found that application of pressure induces the four-long and two-short deformation of the MnO6 octahedra. We present a possible scenario for the pressure-induced charge-ordering.

本文言語English
論文番号113105
ページ(範囲)1131051-1131054
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
65
11
出版ステータスPublished - 2002 3月 15
外部発表はい

ASJC Scopus subject areas

  • 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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