scholarly journals A CORRELATION BETWEEN THE FERROELECTRIC PHASE TRANSITION AND THE CELL VOLUME IN BARIUM STRONTIUM TITANATE

2000 ◽  
Vol 49 (7) ◽  
pp. 1371
Author(s):  
ZHANG LEI ◽  
ZHONG WEI-LIE ◽  
PENG YI-PING ◽  
WANG YU-GUO
Keyword(s):  
Phase Transition ◽  
Cell Volume ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Barium Strontium

The cell volume effect in barium strontium titanate

1997 ◽  
Vol 104 (5) ◽  
pp. 263-266 ◽  
Author(s):  
L. Zhang ◽  
W.L. Zhong ◽  
Y.G. Wang ◽  
P.L. Zhang
Keyword(s):  
Cell Volume ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Volume Effect ◽  
Barium Strontium

Raman Studies of the Soft Phonon Modes in BaxSr1−x.TiO3 thin Films

2001 ◽  
Vol 688 ◽  
Author(s):  
D. A. Tenne ◽  
A. M. Clark ◽  
A. R. James ◽  
A. Soukiassian ◽  
K. Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Raman Spectra ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Soft Mode ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Phonon Modes ◽  
Barium Strontium

AbstractThe vibrational properties of barium strontium titanate thin films were studied by Raman spectroscopy in the temperature range from 5 to 300 K. The films were grown by pulsed laser deposition on SrTiO3 and LaAlO3 substrates with SrRuO3 buffer layers. Soft phonons are observed in Raman spectra of BaxSr1−xTiO3 films with Ba contents x = 0.05, 0.1, 0.2 and 0.5. The temperature dependence of the soft phonon frequencies and the splitting of the triply degenerated soft mode into two components of A and E symmetries indicate the ferroelectric phase transition. The E soft mode line is overdamped over a broad range of temperatures near the ferroelectric phase transition, while it is clearly seen in the spectra at temperatures away from the phase transition. The relative Raman intensity of the A soft mode and hard modes decreases gradually over a broad range of temperatures. This indicates a broad ferroelectric phase transition in the thin films. Comparison of Raman spectra for films grown on SrTiO3 and LaAlO3 substrates shows the influence of strain on the temperature of the ferroelectric phase transition.

scholarly journals Thickness independence of true phase transition temperatures in barium strontium titanate films

2004 ◽  
Vol 96 (1) ◽  
pp. 555-562 ◽  
Author(s):  
A. Lookman ◽  
R. M. Bowman ◽  
J. M. Gregg ◽  
J. Kut ◽  
S. Rios ◽  
...  
Keyword(s):  
Phase Transition ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Transition Temperatures ◽  
Barium Strontium ◽  
Phase Transition Temperatures

Internal stress and the deformation phase transition in nanoscale barium-strontium titanate films

2008 ◽  
Vol 53 (3) ◽  
pp. 502-507 ◽  
Author(s):  
V. M. Mukhortov ◽  
Yu. I. Golovko ◽  
Yu. I. Yuzyuk ◽  
L. T. Latush ◽  
O. M. Zhigalina ◽  
...  
Keyword(s):  
Phase Transition ◽  
Internal Stress ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Barium Strontium ◽  
Deformation Phase
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