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Some Ferroic Perovskite Solid Solutions
We are examining various perovskite solid solutions based on NaNbO3 or BiFeO3 that havepromising ferroelectric or multiferroic properties. All of these solid solutions show... -
Magnetic ordering in the layered oxide chalcogenides A2FeO3CuCh (A = Ca, Sr; ...
This proposal is to measure the evolution of the magnetic structures of a series of iron oxide chalcogenides and compare the structures as a function of cation sizes and with... -
Phase diagram of the lead-free ferroelectric Na1-xKxNbO3 at room temperature
The system NaNbO3 ¿ KNbO3 is one of the most widely studied as a ¿green¿ replacement for the piezoelectric material PZT (PbZr1-xTixO3). Despite its enormously growing... -
Subtle magnetic phase transitions in multiferroic BiFeO3
This experiment seeks to probe the magnetic structure of multiferroic BiFeO3 and its evolution on lowering temperature, with the specific aim of identifying magneto-structural... -
Local structural effects in doped NaNbO3 ferroelectrics
Derivatives of the perovskite NaNbO3 are currently being studied as benign replacements for piezoelectric Pb(Zr,Ti)O3. In order to understand the structure-composition-property... -
The high temperature phases of multiferroic YMnO3
Hexagonal YMnO3 is a well-studied, but poorly understood, multiferroic material, which adopts the 'geometric' mechanism of ferroelectric distortion, rather than the more normal... -
Texture memory and variant selection for steel and titanium and zirconium alloys
The proposed experiment will focus on determining the level of texture memory and variant selection on both heating and cooling for steel and titanium and zirconium alloys with... -
The Definitive Sodium Niobate Phase Diagram?
NaNbO3 has long been regarded as the 'most complex' perovskite known, with at least seven different phases reported as a function of T, at least two of which have evaded all...
