Correlation between B value deviation and sintering temperature of perovskite solid solution materials

Abstract

The effects of different sintering temperatures on the system of Ba0.5Sr0.5TiO3–La0.8Ca0.2MnO3 (BST‐LCM) material were investigated by means of scanning electron microscopy, X‐ray, resistance‐temperature measurements, and X‐ray photoelectron spectroscopy. X‐ray diffraction and X‐ray photoelectron spectroscopy confirm that BST‐LCM is completely miscible and BST is the main phase, which under the premise of following the theory of small polaron conduction, titanium ions interact with manganese ions, which affects the electrical properties of the system of BST‐LCM material. For the electrical properties of related, the LCM content is inversely proportional to the activation energy. Through the linear fitting of the experimental data, the empirical formula between the sintering temperature B value and the content of solid solution is obtained, and the approximate B value within a certain range can be preliminarily calculated.

High-Entropy CeNbO4+δ-Based Ceramics with Ultrahigh Comprehensive Thermosensitive Performances

“…Therefore, the oxygen nonstoichiometric problem is widely present and extremely harmful for high-temperature NTC thermosensitive ceramics, but it has not been effectively solved so far. Most studies on NTC thermosensitive ceramics assume that the stoichiometric ratio of the sample to oxygen is equal. − This situation may not always be the case, which ignores the possibility of temperature-dependent oxygen nonstoichiometric contribution to charge carriers. In oxide ceramics, conductivity is typically caused by electrons and ions, which occur simultaneously.…”