Structural and Ferroelectric Properties in Solid Solution

Abstract

The lattice structure, grain structure and temperature dependent dielectric Sr_(1-x)Ce_xTi_(1-2/3y) Mg_yO₃ (x = 0.05, 0.10, 0.15 and y = 0.05 sintered in 5%H₂ and 95%N₂ atmosphere) ceramic samples were successfully clarified. The (Sr, Ce, Ti, Mg)O₃ show a structure phase transition at SCTM1 from cubic to tetragonal.  It is also obvious, that a small A/B-sites doping promoted the grain growth with relaxor ferroelectric like nature. The ε′−T plot, hysteresis loop along with intrinsic ferroelectricity (PUND) clarify the relaxor ferroelectric nature of the ceramics samples. Further, in the temperature span 50 °C and 200 °C, the ceramic samples showed a good frequency and temperature stability, which show its potential in energy storage devices.

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