PROTON-GLASS DIELECTRIC BEHAVIOR AND PHASE-DIAGRAM OF CS1-X(NH4)XH2ASO4
The complex dielectric constants of mixed Cs0.80(NH4)0.20H2AsO4 single crystals have been measured in the temperature range from 13 to 200 K and the frequency range from 4.4 to 624 kHz along the a and c axes. Proton-glass behavior is first observed in the low-temperature region. The asymmetric concentration-temperature (x-T) phase diagram is obtained by measuring the complex dielectric constants of mixed Cs1-x(NH4)xH2AsO4 microcrystalline powder pellets for the full range of mixing concentration x from 0 to 1. Proton-glass behavior develops in the concentration range of 0.12 < x < 0.51. Coexistence of the proton-glass phase with the respective long-range ordering is observed in the two phase boundary regions.
- Publisher
- AMERICAN PHYSICAL SOC
- Issue Date
- 1994
- Language
- English
- Article Type
- Article
- Keywords
FERROELECTRIC ORDER; MIXED-CRYSTALS; RB1-X(NH4)XH2ASO4; STATE; DYNAMICS; SYSTEM
- Citation
PHYSICAL REVIEW B, v.50, no.10, pp.6637 - 6641
- ISSN
- 0163-1829
- Appears in Collection
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