The Synthesis and Characterization of Sol-Gel-Derived SrTiO<sub>3</sub>-BiMnO<sub>3</sub> Solid Solutions

In this study, the aqueous sol-gel method was employed for the synthesis of (1−x)SrTiO<sub>3</sub>-xBiMnO<sub>3</sub> solid solutions. Powder X-ray diffraction analysis confirmed the formation of single-phase perovskites with a cubic structure up to x = 0.3. A further increas...

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Bibliographic Details
Main Authors: Dovydas Karoblis, Ramunas Diliautas, Eva Raudonyte-Svirbutaviciene, Kestutis Mazeika, Dalis Baltrunas, Aldona Beganskiene, Aleksej Zarkov, Aivaras Kareiva
Format: Article
Language:English
Published: MDPI AG 2020-12-01
Series:Crystals
Subjects:
Online Access:https://www.mdpi.com/2073-4352/10/12/1125
Description
Summary:In this study, the aqueous sol-gel method was employed for the synthesis of (1−x)SrTiO<sub>3</sub>-xBiMnO<sub>3</sub> solid solutions. Powder X-ray diffraction analysis confirmed the formation of single-phase perovskites with a cubic structure up to x = 0.3. A further increase of the BiMnO<sub>3</sub> content led to the formation of a negligible amount of neighboring Mn<sub>3</sub>O<sub>4</sub> impurity, along with the major perovskite phase. Infrared (FT-IR) analysis of the synthesized specimens showed gradual spectral change associated with the superposition effect of Mn-O and Ti-O bond lengths. By introducing BiMnO<sub>3</sub> into the SrTiO<sub>3</sub> crystal structure, the size of the grains increased drastically, which was confirmed by means of scanning electron microscopy. Magnetization studies revealed that all solid solutions containing the BiMnO<sub>3</sub> component can be characterized as paramagnetic materials. It was observed that magnetization values clearly correlate with the chemical composition of powders, and the gradual increase of the BiMnO<sub>3</sub> content resulted in noticeably higher magnetization values.
ISSN:2073-4352