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Order-disorder structural phase transition in the system of intercalated Ni atoms in the Ni 0.5 TiSe 2 compound

Selezneva, N. ; Pleshchev, V. ; Baranov, N.

Physics of the Solid State, 2014, Vol.56(12), pp.2374-2379 [Periódico revisado por pares]

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  • Título:
    Order-disorder structural phase transition in the system of intercalated Ni atoms in the Ni 0.5 TiSe 2 compound
  • Autor: Selezneva, N. ; Pleshchev, V. ; Baranov, N.
  • Assuntos: Crystal Structure – Electric Properties
  • É parte de: Physics of the Solid State, 2014, Vol.56(12), pp.2374-2379
  • Descrição: Changes in the crystal structure of the Ni 0.5 TiSe 2 intercalated compound have been thoroughly investigated using powder X-ray diffractometry in the temperature range from 93 to 700 K. It has been shown that upon heating to the temperature of about 400 K, this compound undergoes a phase transition from the monoclinic structure described by space group I 12/ m 1 to the trigonal structure P\bar 3 m1) , which is associated with the disorder in the subsystem of intercalated Ni atoms. The supercooling effect with the formation of the metastable state, which is characteristic of first-order phase transitions such as melting and crystallization, has been revealed in the region of the order-disorder phase transition, and the anomalous behavior of the resistivity has been observed.
  • Idioma: Inglês

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