Articles written in Pramana – Journal of Physics
Volume 35 Issue 2 August 1990 pp 151-157
A model based on the presence of two-level systems identified with defect clusters is used to study different properties of superionic lead fluoride and calcium fluoride. The high degeneracy of the higher level indicates a liquid-like arrangement of anions within the cluster.
Volume 36 Issue 4 April 1991 pp 393-398 Research Articles
Recent experimental studies show that the dielectric constant of lead fluoride increases rapidly as the superionic transition temperature
Volume 37 Issue 6 December 1991 pp 505-511 Research Articles
In the present paper, we report a theoretical calculation of temperature variation of the ultrasonic absorption coefficient of PbF2. The absorption can be explained by the TLS model, with parameters which simultaneously reproduce the specific heat, thermal expansion, bulk modulus and ionic conductivity. Our results agree well with recent experimental reports of ultrasonic attenuation in PbF2.
Volume 96, 2022
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