Temperature dependence of spontaneous birefringence in ferroelastic lead orthophosphate
- 30 September 1980
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 13 (27), 5155-5164
- https://doi.org/10.1088/0022-3719/13/27/013
Abstract
Accurate measurements of the spontaneous birefringence of lead orthophosphate, Pb3(PO4)2, have been made as a function of temperature using the rotating-analyser method. A procedure for placing such measurements on an absolute scale is described. The results clearly demonstrate that, up to about 160 degrees C, the birefringence shows mean-field behavior corresponding to an order-parameter exponent beta =1/4, typical of a tricritical region. At 160 degrees C there is a crossover to a normal first-order region, with a transition temperature of 177.65 degrees C.Keywords
This publication has 18 references indexed in Scilit:
- Temperature dependence of lattice parameters and spontaneous strain in Pb 3 (PO 4 ) 2Phase Transitions, 1979
- Temperature dependence of critical stress and phase diagram of ferroelastic Pb3 (PO4)2 Pb3 (VO4)2Materials Research Bulletin, 1977
- Inelastic neutron scattering study of the ferroelastic phase transition of lead phosphate (PO4)2Pb3Solid State Communications, 1977
- Étude par diffraction et diffusion de rayons X de la transition de phase ferroélastique du phosphate de plomb : Pb3(PO 4)2Journal de Physique, 1977
- Free energy of (PO4)2Pb3 around the transition pointSolid State Communications, 1976
- Thermal properties of lead phosphatePhysica Status Solidi (a), 1976
- Raman spectrum of α and β-Pb3(PO4)2Solid State Communications, 1974
- α-Pb3(PO4)2 — A pure ferroelasticMaterials Research Bulletin, 1973
- Cation displacements and octahedral tilts in NaNbO3 Part II—Relationship between birefringence and structureFerroelectrics, 1973
- Determination of the State Parameters and Formulation of Spontaneous Strain for FerroelasticsJournal of the Physics Society Japan, 1970