The isolated point on the concentration-temperature phase diagram of K2Cd2xMn2(1-x)(SO4)(3) crystals

Authors
Vlokh, R Vlokh, O Kityk, A Skab, I Girnyk, I Czapla, Z Kosturek, B Dacko, S
Citation
R. Vlokh et al., The isolated point on the concentration-temperature phase diagram of K2Cd2xMn2(1-x)(SO4)(3) crystals, FERROELECTR, 237(1-4), 2000, pp. 481-487
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
FERROELECTRICS
ISSN journal
00150193 → ACNP
Volume
237
Issue
1-4
Year of publication
2000
Pages
481 - 487
Database
ISI
SICI code
0015-0193(2000)237:1-4<481:TIPOTC>2.0.ZU;2-Y
Abstract
The isolated point of second order phase transition (x(i) = 0.8; T-i = 358K ) has been found on the phase x,T-diagram in the line of the first order fe rroelastic phase transitions of the K2Cd2xMn2(1-x),(SO4)(3) solid solutions . The concentration-temperature phase diagram of the K2Cd2xMn2(1-x)(SO4)(3) ferroelastic solid solutions was described and discussed based on the ther modynamic potential. It was shown that isolated point can occur in ferroela stic langbeinites when both coefficients near third order term gamma(1) and gamma(2) simultaneously are equal to zero.