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Brillouin-scattering in superionic compounds - ndf3 and caf2 (Ref3)

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)

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. (Contact us about this Publication)
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
DOI/Identification number: 10.1080/10420159108224882
Subjects: Q Science
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: O.O. Odanye
Date Deposited: 08 Oct 2009 17:24 UTC
Last Modified: 11 Jun 2019 09:04 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/23025 (The current URI for this page, for reference purposes)
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