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2000 | 97 | 1 | 205-208
Article title

New S=1/2 Alternating Chain Compound - High Pressure Form of (VO)_{2}P_{2}O_{7-}

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EN
Abstracts
EN
The high-pressure phase of (VO)_{2}P_{2}O_{7} comprises a unique kind of spin-1/2 Heisenberg alternating antiferromagnetic chain, in contrast with the ambient pressure phase containing two crystallographically different chains. Magnetic susceptibility and high-field magnetization data showed the presence of a single spin gap of 23 (magnetization) ~27 (susceptibility) K, not double as observed for the ambient pressure phase. This result shows that the two kinds of chains of the ambient pressure phase have single, different spin gaps.
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EN
Contributors
author
  • Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
author
  • Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
author
  • Institute for Solid State Physics, University of Tokyo, Roppongi 7-22-1, Minato-ku, Tokyo 106-8666, Japan
author
  • Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
author
  • KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan
author
  • KYOKUGEN, Osaka University, Toyonaka, Osaka 560-8531, Japan
References
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv97z123kz
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