From ferroelectric to quantum paraelectric : KTa1-xNbxO3 (KTN), a model system.
Conference
·
OSTI ID:1003914
The mixed perovskite oxides KTa{sub 1-x}Nb{sub x}O{sub 3}, or KTN, are a model system for studying ferroelectric behavior and phase transitions under pressure. Crystals with x > 0.1 exhibit ferroelectric soft-mode behavior and a sequence of phase transitions, while for x {le} 0.02 a pressure-induced ferroelectric-to-relaxor crossover occurs. The system also exhibits a pressure-induced crossover from classical-to-quantum behavior ultimately leading to the complete suppression of the phase transition and the formation of a quantum paraelectric state.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1003914
- Report Number(s):
- SAND2003-2978C
- Country of Publication:
- United States
- Language:
- English
Similar Records
Quantum effects and glasslike behavior in ferroelectric oxides
Ferroelectric-to-Relaxor Crossover and Oxygen Vacancy Hopping in Compositionally-Disordered Perovskites - KtA(1-x)Nb(x)O(3):Ca
Ferroelectric-to-relaxor crossover and oxygen vacancy hopping in the compositionally disordered perovskites KTa{sub 1-x}Nb{sub x}O{sub 3}:Ca
Conference
·
Sat Aug 01 00:00:00 EDT 1987
·
OSTI ID:6314024
Ferroelectric-to-Relaxor Crossover and Oxygen Vacancy Hopping in Compositionally-Disordered Perovskites - KtA(1-x)Nb(x)O(3):Ca
Journal Article
·
Mon Jul 26 00:00:00 EDT 1999
· Physical Review B
·
OSTI ID:9481
Ferroelectric-to-relaxor crossover and oxygen vacancy hopping in the compositionally disordered perovskites KTa{sub 1-x}Nb{sub x}O{sub 3}:Ca
Journal Article
·
Mon Jan 31 23:00:00 EST 2000
· Physical Review. B, Condensed Matter and Materials Physics
·
OSTI ID:20215482