Structural,spectroscopic and dielectric properties of KVO3 |
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| Authors: | N K Misra R N P Choudhary K L Yadav |
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| Institution: | (1) Department of Physics, P.K.H.N. College, 711 410 Howrah, India;(2) Department of Physics, Indian Institute of Technology, 721 302 Kharagpur, India |
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| Abstract: | Polycrystalline samples of KVO3, a member of the pyroxene structural family have been synthesised with high-temperature solid-state reaction technique. Preliminary
structural and spectroscopic and detailed dielectric properties have been studied in different conditions. No dielectric anomaly
or hysteresis loop has been observed in a wide temperature range (30°C to 450°C). Basic structural and spectroscopic (IR and
Raman) studies suggest that at room temperature, KVO3 is centrosymmetric as reported earlier. This and other observations do not support the recent report of ferroelectric phase
transition in the compound. |
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| Keywords: | X-ray diffraction analysis Raman and IR spectra dielectric constant ferroelectric phase transition |
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