Isotope effect on the soft-mode dynamics ofSrTiO3studied by Raman scattering

2005 ◽  
Vol 72 (6) ◽  
Author(s):  
H. Taniguchi ◽  
T. Yagi ◽  
M. Takesada ◽  
M. Itoh
Keyword(s):  
Raman Scattering ◽  
Isotope Effect ◽  
Soft Mode

Isotope effect on the optical phonons ofYBa2Cu4O8studied by far-infrared ellipsometry and Raman scattering

2006 ◽  
Vol 74 (10) ◽  
Author(s):  
A. Trajnerowicz ◽  
A. Golnik ◽  
C. Bernhard ◽  
L. Machtoub ◽  
C. Ulrich ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Isotope Effect ◽  
Far Infrared ◽  
Optical Phonons ◽  
Infrared Ellipsometry

Critical soft-mode dynamics and unusual anticrossing inCdTiO3studied by Raman scattering

2007 ◽  
Vol 76 (21) ◽  
Author(s):  
Hiroki Taniguchi ◽  
Yue Jin Shan ◽  
Hajime Mori ◽  
Mitsuru Itoh
Keyword(s):  
Raman Scattering ◽  
Soft Mode

Soft Mode Doublet inPbMg1/3Nb2/3O3Relaxor Investigated with Hyper-Raman Scattering

2010 ◽  
Vol 105 (1) ◽  
Author(s):  
A. Al-Zein ◽  
J. Hlinka ◽  
J. Rouquette ◽  
B. Hehlen
Keyword(s):  
Raman Scattering ◽  
Soft Mode

The Observation of Soft Mode in Rb2ZnCl4 by Raman Scattering

1978 ◽  
Vol 45 (4) ◽  
pp. 1429-1430 ◽  
Author(s):  
Mituo Wada ◽  
Akikatsu Sawada ◽  
Yoshihiro Ishibashi
Keyword(s):  
Raman Scattering ◽  
Soft Mode

Soft-Mode Phonons in SrTiO3 Thin Films Studied by Far-Infrared Ellipsometry and Raman Scattering

1999 ◽  
Vol 603 ◽  
Author(s):  
A. A. Sirenko ◽  
C. Bernhard ◽  
A. Golnik ◽  
I. A. Akimov ◽  
A. M. Clark ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Raman Scattering ◽  
Soft Mode ◽  
Experimental Studies ◽  
Low Frequency ◽  
Pulsed Laser ◽  
Far Infrared ◽  
Laser Deposition ◽  
Bulk Crystals ◽  
Infrared Ellipsometry

AbstractWe report the experimental studies of the vibrational spectra of SrTiO3 films with the thickness of 1 µm grown by pulsed laser deposition. Fourier-transform infrared ellipsometry between 30 and 700 cm−1 and electric field-induced Raman scattering have been utilized for investigation of the phonon behavior. These results can be used for comparison with the low-frequency measurements of the static dielectric constant. In the films, the soft mode reveals hardening compared to that in bulk crystals. This observation is in agreement with the Lyddane-Sachs-Teller formalism.

Raman Scattering of Ferroelectric Soft Mode in Sr2Ta2O7

1993 ◽  
Vol 62 (7) ◽  
pp. 2520-2521 ◽  
Author(s):  
Katsuhide Ito ◽  
Hiroki Akane ◽  
Kikuo Ohi
Keyword(s):  
Raman Scattering ◽  
Soft Mode

Determination of the A1(TO) soft-mode damping rate in KTa0.93Nb0.07O3

1994 ◽  
Vol 72 (1-2) ◽  
pp. 40-43 ◽  
Author(s):  
P. Grenier ◽  
D. Houde ◽  
S. Jandl ◽  
L. A. Boatner
Keyword(s):  
Raman Scattering ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Soft Mode ◽  
Stimulated Raman Scattering ◽  
Ferroelectric Phase Transition Temperature ◽  
Damping Rate ◽  
Additional Interaction ◽  
Impulsive Stimulated Raman Scattering

Raman-scattering and infrared reflectivity experiments were conducted using a KTa0.93Nb0.07O3 single crystal with a ferroelectric phase transition temperature of Tc ≈ 68 K. The values obtained for the damping rate of the A1(TO(transverse optical)) soft-mode appear to be half of those determined by impulsive stimulated Raman scattering. Since the latter experiment probes the soft-mode in the polariton regime, while the former probes outside of this region, the observed discrepancy points towards some additional interaction for the polariton soft-mode.

Raman scattering study of the soft mode in Pb(Mg1/3 Nb2/3 )O3

2011 ◽  
Vol 42 (4) ◽  
pp. 706-714 ◽  
Author(s):  
Hiroki Taniguchi ◽  
Mitsuru Itoh ◽  
Desheng Fu
Keyword(s):  
Raman Scattering ◽  
Soft Mode ◽  
Scattering Study
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