Critical behaviour of the Raman frequency shifts in the vicinity of the lambda-phase transition in NH4Br

Yurtseven H. , Unlu Z.

HIGH TEMPERATURE MATERIALS AND PROCESSES, cilt.25, sa.3, ss.143-147, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Konu: 3
  • Basım Tarihi: 2006
  • Dergi Adı: HIGH TEMPERATURE MATERIALS AND PROCESSES
  • Sayfa Sayıları: ss.143-147

Özet

This study gives the temperature dependence of the Raman frequencies for the lattice mode of upsilon(7) (TA) and the internal mode of upsilon(2) close to the X-phase transition (T-lambda=234K, P=\) in NB4Br.