Neutron scattering studies of pretransitional phenomena in structural phase transformations
Materials exhibiting structural phase transformations are well known to possess pretransitional phenomena. Below the transition temperature, T/sub c/, an order parameter appears and the pretransitional effects are associated with the fluctuations of the order parameter. Neutron scattering techniques have proved invaluable in studying the temporal and spatial dependence of these fluctuations. SrTiO/sub 3/ is the prototypical example of a structural phase transformation exhibiting features observable in other transformations such as martensitic and order-disorder. The experimental evolution of the understanding of the phase transformation in SrTiO/sub 3/ will be reviewed and the features observed will be shown to typify other systems.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6392181
- Journal Information:
- Metall. Trans., A; (United States), Vol. 12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STRONTIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
TITANIUM OXIDES
BRAGG REFLECTION
FLUCTUATIONS
FREE ENERGY
IRON COMPOUNDS
NEUTRON DIFFRACTION
NICKEL COMPOUNDS
ORDER PARAMETERS
PHONONS
SPACE DEPENDENCE
SPECTROMETERS
TIME DEPENDENCE
TITANIUM COMPOUNDS
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
DIFFRACTION
ENERGY
MEASURING INSTRUMENTS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUASI PARTICLES
REFLECTION
SCATTERING
STRONTIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VARIATIONS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies