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A J Kulkarni
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Volume 13 Issue 4 September 1990 pp 301-304
Pyroelectric properties of ferroelectric potassium-cesium vanadate and potassium-lithium vanadate
A J Kulkarni A P Kashid S H Chavan
Measurements of pyroelectric currents and coefficients of poled sintered discs of ferroelectric solid solutions, potassium-cesium vanadate and potassium-lithium vanadate have been investigated in the temperature range covering their transition points. In these solid solutions, K
x Cs1−x VO3 and Kx Li1−x VO3, pronounced peaks have been observed at the ferroelectric curie temperatures. The peak values of pyroelectric currents and coefficients change with change in potassium concentration in both the solid solutions. -
Volume 16 Issue 4 August 1993 pp 297-302
A J Kulkarni S P Rasal T S Magdum S H Chavan
The thermoelectric power of the vanadates of potassium, cesium and lithium and their solid solutions was measured in the temperature range covering their transition points. The thermoelectric power measurement was carried out by the two-electrode technique for pellets of polycrystalline ceramic samples. The thermoelectric power increased with temperature initially, then decreased attaining a zero value at the transition temperature. As the concentration of KVO3 increased the thermoelectric power decreased for the solid solutions (K
x − Cs1−x )VO3, whereas the thermoelectric power increased with increase in concentration of KVO3 for the solid solutions (Kx − Li1−x )VO3. Vanadates of potassium, cesium, and lithium and their solid solutions showedP type semiconductor behaviour in ferroelectric state andn type semiconductor behaviour in paraelectric region.
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Bulletin of Materials Science
Volume 46, 2023
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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