Mjwara, P.M., Comins, J.D., Ngoepe, P.E., Chadwick, A.V. (1991) Brillouin-scattering in superionic compounds - ndf3 and caf2 (Ref3). Radiation Effects and Defects in Solids, 119 (1). pp. 237-242. ISSN 1042-0150. (doi:10.1080/10420159108224882) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:23025)
The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. | |
Official URL: http://dx.doi.org/10.1080/10420159108224882 |
Abstract
Using Brillouin scattering techniques, the acoustic mode frequencies associated with the set of elastic constants in NdF3 have been measured as a function of temperature from 300 to 1325 K. Significant deviations from linear behaviour for certain elastic constants were observed above about 1050 K and attributed to a diffuse phase transition into a superionic state. Similar studies on a series of compounds CaF2 (10 mold% ReF3) where Re represents La, Nd, Tb and Tm demonstrate a marked reduction in the superionic transition temperature, Tc, compared with pure CaF2. In the doped crystals significant differences in Tc and the subsequent development of disorder are dismissed in relation to the presence of extrinsic defect clusters.
Item Type: | Article |
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DOI/Identification number: | 10.1080/10420159108224882 |
Subjects: |
Q Science Q Science > QC Physics |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Depositing User: | O.O. Odanye |
Date Deposited: | 08 Oct 2009 17:24 UTC |
Last Modified: | 16 Nov 2021 10:01 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/23025 (The current URI for this page, for reference purposes) |
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