Order-disorder phase transition in NH4AlF4

Date

2002-12-01

Author

Yurtseven, Hasan Hamit

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In this study we calculate the specific heat C-VI for NH4AlF4 due to the nearest-neighbor interactions between the NH4+ tetrahedra using an Ising model superimposed on an Einstein and/or Debye model. The specific beat C-VI calculated using a power-law formula is in good agreement with the observed C-P for the NH4AlF4 system. This is an indication that NH4AlF4 undergoes a weak first-order or a nearly second-order phase transition as predicted by our model.

Subject Keywords

Physical and Theoretical Chemistry, General Materials Science, Metals and Alloys

URI

https://hdl.handle.net/11511/52220

Journal

JOURNAL OF PHASE EQUILIBRIA

DOI

https://doi.org/10.1361/105497102770331190

Collections

Department of Physics, Article

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Citation Formats

H. H. Yurtseven, “Order-disorder phase transition in NH4AlF4,” JOURNAL OF PHASE EQUILIBRIA, pp. 502–505, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52220.