Hysteresis in the rhombohedral–orthorhombic phase transition of KNbO3 under inhomogeneous strain
Resumen
The influence of the heating rate on the low temperature phase transition (PT) of the piezoelectric crystal potassium niobate (KNO) was studied by micro-Raman spectroscopy. It is found that crystallographic defects are more important than the heating rate for the onset of the PT. If the strain shifts the transition temperature (TT) from the rhombohedral to the orthorhombic phase to lower values, then it also shifts the reverse PT to higher temperatures. The PT on heating is more sensitive to the rate than the PT on cooling.
Fuente
Solid State Communications, 154, 6-10Link de Acceso
Click aquí para ver el documentoIdentificador DOI
doi.org/10.1016/j.ssc.2012.10.029Colecciones
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