scholarly journals Raman Spectra of Soft Modes in Ferroelectric Crystals

10.5772/60613 ◽  
2015 ◽  
Author(s):  
Takeshi Shigenari
Keyword(s):  
Raman Spectra ◽  
Soft Modes ◽  
Ferroelectric Crystals

scholarly journals Фазовая диаграмма и особенности поведения мягких мод в твердых растворах со структурой хантита TbFe-=SUB=-3-x-=/SUB=-Ga-=SUB=-x-=/SUB=-(BO_3)-=SUB=-4-=/SUB=-

2022 ◽  
Vol 130 (1) ◽  
pp. 84
Author(s):  
А.С. Крылов ◽  
А.Н. Втюрин ◽  
И.А. Гудим ◽  
И.В. Немцев ◽  
С.Н. Крылова
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Phase Transitions ◽  
Raman Spectra ◽  
Solid Solutions ◽  
Structural Phase ◽  
Temperature Phase ◽  
Structural Phase Transitions ◽  
Soft Modes ◽  
Temperature Phase Diagram

The Raman spectra of four crystals of TbFe3-хGax (BO3) 4 solid solutions (x from 0 to 0.54) were studied in the temperature range from 8 to 350 K. The temperatures of structural phase transitions were determined. The observed spectral behavior is characteristic to condensation and restoration of soft modes. Soft modes are associated with a structural phase transition from the R32 phase to the P3121 phase. The Compositions-Temperature phase diagram was constructed

Raman spectra and soft modes in ferroelectric SbSBr

1981 ◽  
Vol 38 (1) ◽  
pp. 885-888 ◽  
Author(s):  
Takashi Inushima ◽  
Kunimitsu Uchinokura ◽  
Koya Sasahara ◽  
Etsuyuki Matsuura ◽  
Ryozo Yoshizaki
Keyword(s):  
Raman Spectra ◽  
Soft Modes

scholarly journals Soft modes condensation in Raman spectra of (Pb–La)(Zr–Sn–Ti)O3 ceramics

2019 ◽  
Vol 09 (03) ◽  
pp. 1950024
Author(s):  
Alexander N. Vtyurin ◽  
Alexander S. Krylov ◽  
Svetlana N. Krylova ◽  
Alexander S. Oreshonkov ◽  
Xiaoyong Wei ◽  
...  
Keyword(s):  
Phase Transition ◽  
Raman Spectra ◽  
Transition Point ◽  
Low Frequency ◽  
Strong Damping ◽  
Soft Modes ◽  
Antiferroelectric Phase ◽  
Ceramic Samples

Low frequency Raman spectra of ([Formula: see text][Formula: see text]([Formula: see text][Formula: see text][Formula: see text]O3 ceramic samples have been studied near cubic to antiferroelectric phase transition at about 200∘C. A set of low frequency soft modes were observed restoring below the transition point, in addition to the known one above 100[Formula: see text]cm[Formula: see text]. These modes show strong damping anomalies at the transition point that supposes considerable intermode interactions via dampings.

Single Crystal Raman Spectra of the Phase Transition in KTCNQ

1982 ◽  
Vol 85 (1) ◽  
pp. 297-303 ◽  
Author(s):  
A. D. Bandrauk ◽  
K. D. Truong ◽  
S. Jandl
Keyword(s):  
Phase Transition ◽  
Single Crystal ◽  
Raman Spectra

Some peculiarities of 180°-domain wall moticn in thin ferroelectric crystals

1983 ◽  
Vol 44 (10) ◽  
pp. 293-299 ◽  
Author(s):  
E. V. Burtsev ◽  
S. Y. Chervonobrodov
Keyword(s):  
Domain Wall ◽  
Ferroelectric Crystals

Soft-modes in displacive transitions

1971 ◽  
Vol 32 (8-9) ◽  
pp. 657-670 ◽  
Author(s):  
S. Aubry ◽  
R. Pick
Keyword(s):  
Soft Modes
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