Design and development of double perovskite ferroelectric based temperature sensor

Abstract

The double perovskite ferroelectric materials are gaining significant research interest newlinein the current scenario due to the aspiration for development of capacitive newlinetemperature sensors on account of inherent characteristic with higher mechanical, newlinechemical and thermal stability. Despite significant advancements in solid state newlinescience and technology, a much-awaited scientific breakthrough is indispensable for newlinethe development of a novel eco-friendly ferroelectric material with stronger newlinetemperature dependent permittivity along with lower tangent loss for formulation of newlinecapacitive temperature sensor intended for high temperature industrial applications. newlineAn elegant solution to this is the assortment, development and fabrication of different newlinelead free bismuth based double perovskite compounds (A2BBand#8242;O6 type) through proper newlinechoice of the metal ion B (manganese Mn4+) and Band#8242; transition metal ions (either, newlinenickel Ni2+, cobalt Co2+, ferrous Fe2+, and cadmium Cd2+), which would offer a newlinegigantic opportunity for path-breaking device modernization. In order to delineate the newlineeminence of the synthesized solid solutions and validate the propensity of the newlinecompound for capacitive temperature sensor various structural, morphological, newlineelectrical properties with structure-property acquaintances, dielectric behavior, loss newlinetangent, impedance, resistive, conductive, electric modulus, relaxation phenomenon, newlineferroelectric hysteresis, magneto-electric coupling coefficient, pyroelectric as well as newlinecapacitive characteristics have been experimentally explored. A comprehensive newlinecomparison between all the prepared compounds (such as Bi2MnNiO6, Bi2MnCoO6, newlineBi2MnFeO6 and Bi2MnCdO6) has been accomplished to illustrate the pre-eminence of newlinethe capacitive specimen as a potential ferroelectric entity with desired properties for newlinetemperature sensor device design. The temperature sensor is designed based on newlinecapacitive technology using one of the fabricated lead-free components [Bi2MnNiO6] newlineas lumped capacitor component. The temperature sensing behavior has been newline