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- W4287863320 abstract "The effect of Sr doping in BaTiO3 (BTO) with nominal compositions Ba0.80Sr0.20TiO3 (BSTO) have been explored in its structural, lattice vibration, dielectric, ferroelectric and electrocaloric properties. The temperature dependent dielectric results elucidate the enhancement in dielectric constant and exhibit three frequency independent transitions around 335, 250 and 185 K which are related to different structural transitions. All these transitions occur at lower temperature as compared with pristine BTO, however; remnant electric polarization (P) of BSTO is much higher than in BTO. The value of P is around 5 microC/cm2 at room temperature and the maximum P around 8 microC/cm2 is observed at tetragonal to orthorhombic and orthorhombic to rhombohedral transitions. The electro-caloric effect shows the maximum adiabatic change in temperature deltaT approx 0.24 K at cubic to tetragonal transition. The temperature dependent synchrotron X-ray diffraction and Raman results shows correlations between P, crystal structure and lattice vibrations. Our results demonstrate the enhancement in ferroelectric properties of BTO with Sr doping. The origin of the enhancement in ferroelectric property is also discussed which is related to the appearance of superlattice peak around room temperature due to TiO6 octahedral distortion. These enhanced properties would be useful to design lead free high quality ferroelectric and piezoelectric materials." @default.
- W4287863320 created "2022-07-26" @default.
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- W4287863320 date "2020-02-28" @default.
- W4287863320 modified "2023-10-01" @default.
- W4287863320 title "Structural correlations in the enhancement of ferroelectric property of Sr doped BaTiO3" @default.
- W4287863320 doi "https://doi.org/10.48550/arxiv.2002.12855" @default.
- W4287863320 hasPublicationYear "2020" @default.
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