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Pressure Dependence of the Low‐Frequency Dielectric Constant of KNbO 3
Author(s) -
Errandonea D.,
Moya E.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199709)203:1<r1::aid-pssb99991>3.0.co;2-g
Subject(s) - valencia , citation , physics , library science , humanities , computer science , mathematics , philosophy , ecology , biology
The effect of pressure on the low-frequency dielectric constant,$\epsilon_0$, of single crystals of KNbO_3 is investigated by means ofcapacitance measurements. The dielectric constant increases with pressure up to22.5 kbar, where it exhibits a large value ($\epsilon_0$ = 5000), and thendecreases. This change in its behaviour is related to a phase transitioninduced by pressure. On decompression, the samples do not revert back to theambient pressure phase.