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The phase transition of two-dimensional squaric acid H2C4O4 studied by neutron scattering

✍ Scribed by Emil J. Samuelsen; Dag Semmingsen


Book ID
107813112
Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
1002 KB
Volume
38
Category
Article
ISSN
0022-3697

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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