Effect of point defects on the behavior of the soft mode at a structural phase transition

1989 ◽  
Vol 32 (8) ◽  
pp. 612-616
Author(s):  
M. I. Shchedrin
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Point Defects ◽  
Soft Mode ◽  
Structural Phase

scholarly journals Raman spectroscopy study of the behavior of the soft mode in a structural phase transition in the Pr3Sb5O12 crystal

2015 ◽  
Vol 57 (11) ◽  
pp. 2286-2289 ◽  
Author(s):  
A. S. Oreshonkov ◽  
A. K. Khodzhibaev ◽  
A. S. Krylov ◽  
M. F. Umarov ◽  
A. N. Vtyurin
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Spectroscopy Study

scholarly journals Manifestation of magnetoelastic interactions in Raman spectra of HoxNd1−xFe3(BO3)4 crystals

2018 ◽  
Vol 08 (02) ◽  
pp. 1850011 ◽  
Author(s):  
A. S. Krylov ◽  
S. N. Sofronova ◽  
I. A. Gudim ◽  
S. N. Krylova ◽  
Rajesh Kumar ◽  
...  
Keyword(s):  
Phase Transition ◽  
Raman Spectra ◽  
Structural Phase Transition ◽  
Solid Solutions ◽  
Order Parameter ◽  
Soft Mode ◽  
Magnetic Phase ◽  
Structural Phase ◽  
Exchange Interactions ◽  
Magnetoelastic Interaction

Raman spectra of Ho[Formula: see text]NdxFe(BO3)4 ([Formula: see text], 0.75, 0.5, 0.25) have been studied in temperature range 10–400[Formula: see text]K. Two compositions ([Formula: see text], [Formula: see text]) demonstrate structural phase transition with soft mode restoration. The addition of Nd atoms increases interatomic spacing and decreases the temperature of structural phase transition. The solid solutions ([Formula: see text], 0.5, 0.25) demonstrate the emergence of the peaks corresponding to magnetoelastic interaction below Néel temperature. The order parameter of the magnetic phase transition has been determined. The equal concentrations of holmium and neodymium atoms prevent magnon soft modes condensation caused by exchange interactions in Fe–O–Fe chains are observed. Calculations confirm the data obtained in the experiment.

Polar-Soft-Mode-Driven Structural Phase Transition inSrTiO3

2007 ◽  
Vol 99 (16) ◽  
Author(s):  
A. Bussmann-Holder ◽  
H. Büttner ◽  
A. R. Bishop
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase

Soft mode and structural phase transition in the cubic elpasolite Cs2NaNdCl6

1984 ◽  
Vol 49 (11) ◽  
pp. 1045-1047 ◽  
Author(s):  
G.P. Knudsen
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase

Giant magnetocaloric effect and soft-mode magneto-structural phase transition in MnAs

2008 ◽  
Vol 81 (4) ◽  
pp. 47002 ◽  
Author(s):  
J. D. Zou ◽  
H. Wada ◽  
B. G. Shen ◽  
J. R. Sun ◽  
W. Li
Keyword(s):  
Phase Transition ◽  
Magnetocaloric Effect ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Giant Magnetocaloric Effect

scholarly journals Erratum to: “Raman spectroscopy study of the behavior of the soft mode in a structural phase transition in the Pr3Sb5O12 crystal”

2016 ◽  
Vol 58 (4) ◽  
pp. 857-857
Author(s):  
A. S. Oreshonkov ◽  
A. K. Khodzhibaev ◽  
A. S. Krylov ◽  
M. F. Umarov ◽  
A. N. Vtyurin
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Spectroscopy Study

Soft mode behaviour at the structural phase transition in (NbSe4)3I

1989 ◽  
Vol 156-157 ◽  
pp. 20-22 ◽  
Author(s):  
P. Monceau ◽  
L. Bernard ◽  
R. Currat ◽  
F. Levy
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase

Soft mode at an incommensurate structural phase transition

1980 ◽  
Vol 80 (5-6) ◽  
pp. 405-407
Author(s):  
B.S. Lee
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase

Neutron and raman scattering study of the soft mode behaviour at the structural phase transition in A-tCNB

1990 ◽  
Vol 109 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Ph Bourges ◽  
M. H. Lemee-Cailleau ◽  
P. Launois ◽  
F. Moussa ◽  
H. Cailleau ◽  
...  
Keyword(s):  
Phase Transition ◽  
Raman Scattering ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Scattering Study
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