New type of far-infrared soft mode in ferroelectric gadolinium molybdate
作者： J. Petzelt
DOI: 10.1016/0038-1098(71)90162-1
关键词: Analytical chemistry 、 Soft modes 、 Condensed matter physics 、 Oscillator strength 、 Materials science 、 Molybdate 、 Phase (matter) 、 Far infrared 、 Gadolinium 、 Ferroelectricity 、 Phase transition
摘要: Abstract A new type of soft mode has been observed in far infrared transmission spectra ferroelectric Gd2(MoO4)3 40–50 cm-1 region. The is split and its oscillator strength decreases towards the phase transition. Its contribution to static dielectric constant essentially temperature independent amounts only 0.034 ± 0.008.
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J. D. Axe, B. Dorner, G. Shirane, Mechanism of the Ferroelectric Phase Transformation in Rare-Earth Molybdates Physical Review Letters. ,vol. 26, pp. 519- 523 ,(1971) , 10.1103/PHYSREVLETT.26.519
E. Pytte, Model for ferroelectric Gd2(MoO4)3 Solid State Communications. ,vol. 8, pp. 2101- 2104 ,(1970) , 10.1016/0038-1098(70)90228-0
J. Petzelt, V. Dvořák, New Type of Ferroelectric Soft Mode in Gadolinium Molybdate Physica Status Solidi B-basic Solid State Physics. ,vol. 46, pp. 413- 423 ,(1971) , 10.1002/PSSB.2220460141
L. E. Cross, A. Fouskova, S. E. Cummins, Gadolinium Molybdate, a New Type of Ferroelectric Crystal Physical Review Letters. ,vol. 21, pp. 812- 814 ,(1968) , 10.1103/PHYSREVLETT.21.812
P.A. Fleury, Anomalous phonon behavior near the phase transition in ferroelastic-ferroelectric Gd2(MoO4)3 Solid State Communications. ,vol. 8, pp. 601- 605 ,(1970) , 10.1016/0038-1098(70)90158-4
V. Dvořák, J. Petzelt, Soft mode behaviour in improper ferroelectrics Physics Letters A. ,vol. 35, pp. 209- 210 ,(1971) , 10.1016/0375-9601(71)90153-8
V. Dvořák, The origin of the structural phase transition in Gd2(MoO4)3 Physica Status Solidi B-basic Solid State Physics. ,vol. 45, pp. 147- 152 ,(1971) , 10.1002/PSSB.2220450115
V. Dvořák, A Thermodynamic Theory of Gadolinium Molybdate Physica Status Solidi B-basic Solid State Physics. ,vol. 46, pp. 763- 772 ,(1971) , 10.1002/PSSB.2220460236