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Which among the following compounds can show the properties of a Ferroelectric substance?(a) BaTiO3(b) PbZrO3(c) MnO2(d) CrO2I got this question in an internship interview.This intriguing question comes from Solid State Magnetic Properties in division Solid State of Chemistry – Class 12

Answer»

Correct answer is (a) BATIO3

To explain I would say: At the Curie TEMPERATURE (AROUND 120 ºC) paraelectric BaTiO3 transforms into a ferroelectric STRUCTURE. Ferroelectricity is the characteristic of certain substances that possess a SPONTANEOUS electric field which can be reversed by applying an external electric field.



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