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Proton ordering model of superionic phase transition in (NH 4 ) 3 H(SeO 4 ) 2 crystal

✍ Scribed by Stasyuk, I. V.; Pavlenko, N.; Hilczer, B.

Book ID
127304142
Publisher
Taylor and Francis Group
Year
1997
Tongue
English
Weight
779 KB
Volume
62
Category
Article
ISSN
0141-1594

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Brillouin scattering study of the superi
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✍ M. Pavel; A. Pawlowski; Z. Zikmund; M. Drozdowski πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 305 KB

The acoustic behaviour of (NH,),H,(SeO,), single crystal around the superionic phase transition at 378 K was studied by Brillouin scattering measurements. No anomaly of the longitudinal mode in the [loo] direction was observed whereas 5% softening of the longitudinal mode with a minimum at 382 K was