Abstract
Crystal structure and dielectric properties in YCr1-xTixO3 with 0≤x≤0.1 compositions are reported. A narrow solubility range of Ti into YCrO3 matrix is found. Nevertheless, notorious changes occur in the dielectric and ferroelectric properties. Temperature dependence of permittivity (ε’) and loss tangent (tan δ) show a paraelectric and ferroelectric transition at about 240 °C. The broad permittivity peaks and their dependence on frequency strongly suggest a relaxor ferroelectric compound. Furthermore, the dielectric loss decreased by Ti doping. We infer that the substitution of Cr d3-orbitals by Ti do-orbitals decreases the mobility of the free charge carriers inducing the polarization curves restore. The results clearly indicate that the Ti substitution improves the dielectric and ferroelectric properties of YCrO3 and the optimum Ti-doped YCrO3 can be an excellent candidate to extrapolate it towards thin film studies.
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