Abstract
Pyrochlore structure Eu2Ti2O7:In3+, Sb3+ microcrystals were successfully synthesized via solid state reaction method at 1100 °C for 24 h. The crystal structure, particle size, morphology, and optical properties of the as-synthesized materials were investigated by XRD, SEM-EDX, and PL. Additionally, the dielectric constant, loss tangent, piezoelectric charge constant and Curie tempereture were investigated by LCR-meter, d33-meter and TG/DTA. Both phosphors have a cubic crsytal system in the pyrochlore type. The photoluminescence properties of Eu1.90In0.10Ti2O7 and Eu1.98Sb0.02Ti2O7 show that the red emission of Eu3+ ion has been observed from sythesized phosphors. At the same time, the phosphors are piezoelectric materials with higher Curie temperature than Eu2Ti2O7 host crystal.
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