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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalPhysica B: Condensed Matter
Publication statusPublished - 2001 Jan


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