スピンギャップ化合物（ＶＯ）２Ｐ２Ｏ７高圧相の磁性と単結晶作製

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  • Magnetic Properties and Single Crystal Growth of a Spin Gapped Compound, High Pressure Phase of (VO)2P2O7.
  • スピンギャップ カゴウブツ VO 2P2O7 コウアツソウ ノ ジセイ ト タンケッショウ サクセイ

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Magnetic properties of the high pressure (HP) phase (VO)2P2O2 was studied. It has an unique kind of spin-1/2 Heisenberg alternating antiferromagnetic(AF) chain, whereas its ambient pressure (AP) phase comprises two crystallographically different chains. Magnetic susceptibility, high-field magnetization and heat capacity of the HP phase were measured, and existance of a single spin gap was confirmed. In addition, differential thermal analysis under high pressure was performed to probe the melting point of this HP phase, and its single crystal was grown. Powder XRD under high pressure revealed that there exist more other HP phases.

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