Pyroelectric properties of ferroelectric potassium-cesium vanadate and potassium-lithium vanadate

Kulkarni, Ambarish J.; Kashid, A. P.; Chavan, S H

doi:10.1007/bf02744987

Cited by 4 publications

References 8 publications

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Electrical Conductivity of Ferroelectric Potassium Vanadate, Cesium Vanadate, Lithium Vanadate, and Their Solid Solutions

Chavan

Kulkarni

1993

Phys. Stat. Sol. (a)

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The dc electrical conductivities of potassium vanadate, lithium vanadate, cesium vanadate, and their solid solutions potassium-lithium vanadate, potassium-cesium vanadate are measured in the temperature range covering their transition temperature using two-probe electrode technique. These ceramics show a remarkable change in conductivity in their phase transition region. The results are found to obey the conventional exponential law and the activation energy is calculated and it is found that thc activation energy in the paraelectric state is higher than in ferroelectric state. The activation energy depends not only on temperature but on concentration of potassium vanadate in both solid solutions.Die Gleichstromleitfahigkeit von Kalium-, Lithium-und Casiumvanadaten und ihren festen Losungen K Li-und K-Cs-Vanadat werden mittels Zweisondentechnik im Temperaturbereich der Phaseniiber-gHnge gemessen. In diesen Gebieten zeigen diese Keramiken bemerkenswerte Anderungen der Leitfahigkeit. Die Leitfahigkeit folgt dem iiblichen Exponentialgesetz, die Aktivierungsenergie ist im paraelektrischen Zustand groBer als im ferroelektrischen. Die Aktivierungsenergie hingt nicht nur von der Temperatur, sondern auch vom K-Vanadat-Gehalt in der festen Losung ab.

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