Investigation of a peculiar relaxor ferroelectric: Na0.5Bi0.5TiO3.
UNSPECIFIED (2002) Investigation of a peculiar relaxor ferroelectric: Na0.5Bi0.5TiO3. In: 10th International Meeting on Ferroelectricity, MADRID, SPAIN, SEP 03-07, 2001. Published in: FERROELECTRICS, 270 pp. 1377-1382.Full text not available from this repository.
The relaxor ferroelectric, Sodium Bismuth Titanate, (Na0.5Bi0.5TiO3), NBT is an A-site substituted distorted perovskite. An extensive temperature-, pressure- and substitution-dependent study of the crystal structure and phase transitions in this compound has been carried out using neutron/x-ray diffraction techniques. This has been complemented with optical, Raman and computational modelling studies.
The temperature-dependent investigation shows that NBT undergoes a first phase transition from the high-temperature cubic prototype (Pm (3) over bar m) Phase I to Phase II of tetragonal symmetry (P4bm) and then a second one with strong diffuse character to Phase III of rhombohedral symmetry (R3c). The high-pressure study of NBT has revealed an interesting and unusual relaxor-to-antiferroelectric (R3c --> Pnma) phase transition. Structural variations as a function of temperature and doping across the (Na1-xKx)(0.5)Bi0.5TiO3 (NKBT) series have also been established.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
|Journal or Publication Title:||FERROELECTRICS|
|Publisher:||TAYLOR & FRANCIS LTD|
|Number of Pages:||6|
|Page Range:||pp. 1377-1382|
|Title of Event:||10th International Meeting on Ferroelectricity|
|Location of Event:||MADRID, SPAIN|
|Date(s) of Event:||SEP 03-07, 2001|
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