High-field magnetization measurements on single crystals of (VO)2P2O7

Y. Narumi, S. Kimura, S. Hirai, K. Kindo, H. Schwenk, S. Schmidt, B. Wolf, B. Lüthi, T. Saito, M. Azuma, M. Takano

研究成果: Article査読

2 被引用数 (Scopus)

抄録

High-field magnetization measurements have been performed on single crystals of ambient pressure (AP) and high-pressure (HP) phases of (VO)2P2O7 (VOPO). In the measurement of AP-VOPO, we observed magnetization rises with the curvatures changing at two critical fields. On the other hand, a single sharp increase was observed in the magnetization curve of HP-VOPO. These behaviors revealed that AP-VOPO and HP-VOPO consist of two kinds of gapped chains and a single gapped chain, respectively. From convex behaviors in these magnetization m, we estimated the critical exponent δ = 4/3 defined as m ∝(H-Hc)1/δ for the S = 1/2 gapped system.

本文言語English
ページ(範囲)71-74
ページ数4
ジャーナルPhysica B: Condensed Matter
294-295
DOI
出版ステータスPublished - 2001 1

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
  • 電子工学および電気工学

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