lambda-transition of NH4Cl and ND4Cl at high pressures
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, cilt.244, sa.7, ss.2589-2596, 2007 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 244 Sayı: 7
- Basım Tarihi: 2007
- Doi Numarası: 10.1002/pssb.200642154
- Dergi Adı: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2589-2596
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
We predict in this study using the mean-field theory, the phase-line equation from the free energy expanded in terms of the order parameters of solid II and III phases of NH4Cl and ND4Cl close to the X-phase transitions at high pressures. Using the temperature and pressure dependence of the coefficients given in the phase-line equation, it is shown that the experimentally observed T-P phase diagram for the solid II-solid III transition, can be predicted from the mean field model studied here for both crystalline structures. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.