High temperature dielectric relaxation anomalies in Ca0.9Nd0.1Ti0.9Al0.1O3−δ single crystals
作者： G. Murugesan , R. Nithya , S. Kalainathan , Shamima Hussain
DOI: 10.1039/C5RA15876A
关键词: Charge carrier 、 Dielectric 、 X-ray photoelectron spectroscopy 、 Oxygen 、 Relaxation (physics) 、 Atmospheric temperature range 、 Ionization 、 Chemistry 、 Thermal conduction 、 Condensed matter physics
摘要: We herein report dielectric studies on Ca0.9Nd0.1Ti0.9Al0.1O3−δ single crystals grown by the optical floating zone technique in temperature range from room to 660 K. Two anomalies were observed at ∼436 K and 520 K, which correspond relaxor-like behaviour due Maxwell–Wagner relaxations conduction relaxation associated with doubly ionized oxygen vacancies respectively. The presence of Ti3+ for charge carrier hopping is confirmed X-ray photoelectron spectroscopy analysis.
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