DIELECTRIC-RELAXATION AND PIEZOELECTRIC COUPLING IN THE MIXED PROTON-GLASS CRYSTAL K0.61(NH4)0.39H2PO4

Authors
TU CS SCHMIDT VH SALEH AA
Citation
Cs. Tu et al., DIELECTRIC-RELAXATION AND PIEZOELECTRIC COUPLING IN THE MIXED PROTON-GLASS CRYSTAL K0.61(NH4)0.39H2PO4, Physical review. B, Condensed matter, 48(17), 1993, pp. 12483-12487
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
48
Issue
17
Year of publication
1993
Pages
12483 - 12487
Database
ISI
SICI code
0163-1829(1993)48:17<12483:DAPCIT>2.0.ZU;2-W
Abstract
Measurements of the dielectric permittivities in the mixed proton-glas s crystal K0.61(NH4)0.39H2PO4 are reported from 20 Hz to 200.8 MHz and for fields along both the a and c axes. Between 14 and 50 K, the c-ax is permittivity outside the piezoelectric-resonance range shows a temp erature-dependent spread in relaxation times but cannot be fit accurat ely with the Cole-Cole formula. Strong piezoelectric resonance for a f ield along the c axis was observed in the region between 100 kHz and 1 0 MHz.