THE INFLUENCE OF DISORDER ON THE GROUP-THEORETICALLY DERIVED SELECTION-RULES IN AMMONIUM HALIDES

Date

1988-05-01

Author

Yurtseven, Hasan Hamit

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There is no significant disagreement about the basic selection rules operating in the ferro-ordered (δ) and antiferro-ordered (γ) phases of the ammonium halides. The effects of residual disorder just below the transition temperature (Tc) are still treated differently by different research groups and therefore this remains a subject of some interest. In this study it will be shown how our approaches lead to assignments of the modes observed in the disordered β - phase, Raman spectrum at temperatures just below Tc will be discussed. The self-consistancy of the various possible approaches to this problem will be shown.

Subject Keywords

Chemistry, Physical

URI

https://hdl.handle.net/11511/57456

Journal

JOURNAL OF MOLECULAR STRUCTURE

DOI

https://doi.org/10.1016/s0022-2860(98)80120-8

Collections

Department of Physics, Article

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Citation Formats

H. H. Yurtseven, “THE INFLUENCE OF DISORDER ON THE GROUP-THEORETICALLY DERIVED SELECTION-RULES IN AMMONIUM HALIDES,” JOURNAL OF MOLECULAR STRUCTURE, pp. 459–464, 1988, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57456.