Temperature dependence of susceptibility in the ferrielectric phase of ammonium sulphate

Enginer Y., Salihoglu S., Yurtseven H.

CHINESE JOURNAL OF PHYSICS, cilt.41, sa.4, ss.399-405, 2003 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 4
  • Basım Tarihi: 2003
  • Dergi Adı: CHINESE JOURNAL OF PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.399-405
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

We have developed a mean field model for the paraelectric-ferrielectric phase transition in ammonium sulphate. In our model we assume that the quadrupolar. interactions are the dominant mechanism for this type of transition. The fit of our calculated susceptibility to the experimental data shows that the free energy, with a quadrupolar coupling term, can also adequately explain the observed behaviour of ammonium sulphate.