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✦   LIBER   ✦

Polarized light study of the CsHSO4 and CsDSO4 superprotonic crystals

✍ Scribed by L Kirpichnikova; M Polomska; J Wolak; B Hilczer

Book ID
104296633
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
489 KB
Volume
97
Category
Article
ISSN
0167-2738

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✦ Synopsis

The results of an optical polarization study of superprotonic CsHSO and CsDSO crystals in the vicinity of phase 4 4 transitions are presented. Our observations allow us to state that the temperature of III-II phase transition in 'fresh', high quality crystals is 373 K. The temperature of the phase transition of the specimens that have experienced the III-II phase transition earlier is reduced to 330 K. It is established that changes of the domain structure in CsDSO crystals are observed 4 on both increasing and decreasing temperature at 3 K away from the temperature of the superprotonic phase transition. The appearance of the new structure is accompanied by a gradual increase in the conductivity by 1.5-2 order of magnitude and then the conductivity increases abruptly by another two orders of magnitude at the temperature of the superprotonic phase transition.

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