Phase Transition in VO_2

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概要

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• The thermal dilatation of V0_2 has been measured on ceramic samples from room temperature to 95℃, in connection with Mott's consideration which interpretes the non-metal to metal transition observed in some transition metal oxides as an effect of contraction of lattice spacings. A discontinuous volume expansion was unexpectedly observed at 65℃ with increasing temperature. The magnetic susceptibility has also been measured in the vicinity of the transition point. Below the transition point it has a temperature indenpendent value and at the transition point it makes a stepwise increase, but no singular peak was observed there. A measurement of the temperature dependence of the specific heat was carried out by an adiabatic type calorimeter. A distinct anomaly was observed near the transition point and the transition heat was estimated as about 750 cal/mol These data suggest that the transition would be of the fist kind.

• 社団法人日本物理学会の論文
• 1964-04-05

著者

• Nakagawa Takehiko

  Physics Department Tokyo Institute Of Technology

• KAWAKUB0 Tatsuyuki

  Physics Department, Tokyo Institute of Technology

• Kawakubo T.

  Physics Department, Tokyo Institute of Technology

関連論文

• On the Phase Transition in Sr(FeTa)_O_3
• Magnetic Properties and Optical and Paramagnetic Spectra of Divalent Nickel in Sr_2(NiW)O_6
• Phase Transition in VO_2

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