Origin of ferroelectric phase transition in SbSClxI1-x mixed crystals
2014 ◽
Vol 28
(30)
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pp. 1450209
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Keyword(s):
The measurements of SbSCl x I 1-x(x = 0.2) temperature dependent capacitance were carried out. The temperature of ferroelectric phase transition TC ≈340 K was measured experimentally. TC of SbSCl x I 1-x was calculated theoretically in anharmonic and harmonic approximations. TC was calculated in anharmonic approximation using temperature dependence of mean potential energy of Sb atoms as a function of the soft B1u symmetry normal coordinate along c(z)-axis. Moreover, TC was calculated in harmonic approximation using temperature dependence of vibrational thermodynamic functions (Helmholc free energy). TC dependence from unit cell parameters a, b and from mixture composition x was carried out.
1976 ◽
Vol 55
(3)
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pp. 987-987
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Keyword(s):
1971 ◽
Vol 45
(3)
◽
pp. 986-988
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1983 ◽
Vol 52
(3)
◽
pp. 920-924
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