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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
XRD patterns of (a) Bi1.8Zr0.2O3.1 after heat treatment at different temperatures and Bi2−xZrxO3+x/2 (x = 0.2 to 1.0, 0.2 each) after heat treated at (b) 500 and (c) 750 °C.