WEAKLY FIRST-ORDER OR NEARLY 2ND-ORDER PHASE-TRANSITIONS IN AMMONIUM HALIDES

Authors
YURTSEVEN H SHERMAN WF
Citation
H. Yurtseven et Wf. Sherman, WEAKLY FIRST-ORDER OR NEARLY 2ND-ORDER PHASE-TRANSITIONS IN AMMONIUM HALIDES, Phase transitions, 47(1-2), 1994, pp. 69-75
Citations number
18
Categorie Soggetti
Crystallography,"Physics, Condensed Matter
Journal title
Phase transitions → ACNP
ISSN journal
01411594
Volume
47
Issue
1-2
Year of publication
1994
Part
A
Pages
69 - 75
Database
ISI
SICI code
0141-1594(1994)47:1-2<69:WFON2P>2.0.ZU;2-W
Abstract
This work is mainly concerned with the application to the ammonium chl oride system of the model that was developed by Yurtseven (1993). Usin g the model, which is an Ising model superimposed on an Einstein and/o r Debye model, the specific heat C-v has been calculated in the vicini ty of the lambda-phase transition in NH4Cl. Our calculated C-v values give a reasonable fit to the observed more recent C-p data from the li terature. The model predictions applicable to the ammonium halides are discussed.