Structural, microstructure, spectroscopic, and magnetic investigation of vanadium‐doped SrTiO3 perovskite ceramics

Author:

Yadav Vedika1,Cheema Harshpreet1,Alvi Parvez Ahmad1,Dev Jai23,Kushwaha Pallavi23,Kumar Upendra4ORCID

Affiliation:

1. Department of Physical Sciences Banasthali Vidyapith, Banasthali Jaipur Rajasthan India

2. CSIR‐National Physical Laboratory New Delhi New Delhi India

3. Academy of Scientific and Innovative Research (AcSIR) CSIR‐HRDC Campus Ghaziabad Uttar Pradesh India

4. Advanced Functional Materials Laboratory Department of Applied Sciences IIIT Allahabad Prayagraj Uttar Pradesh India

Abstract

AbstractIn this study, we provide the synthesis and analysis of the structure, microstructure, and spectroscopic properties of V‐doped SrTiO3. The monophasic samples were made using the usual ceramic method, which involved calcination at temperatures of 1000°C and 1300°C. The X‐ray diffraction analysis, combined with the Rietveld refinement, conclusively demonstrates that they have crystallized in a cubic structure, namely under the space group . The inclusion of vanadium (V) at the titanium (Ti) site has been investigated by evaluating the size of the crystallite and grain. The investigation of dielectric and dissipation factors at different frequencies indicates the existence of interfacial and orientational polarization. Two distinct conduction and relaxation processes were identified within the temperature range examined based on the spectroscopic plot. The presence of a paramagnetic phase in the samples, caused by the presence of V and its magnetic interaction with oxygen vacancies, indicates that it can be classified as a soft magnetic material. The electrode's consistent dielectric constant and dissipation factor make it well‐suited for use in supercapacitor dielectric capacitors. Additionally, its mixed‐type conduction, involving both ionic and electronic conduction, makes it excellent for use as electrode materials in intermediate‐temperature solid oxide fuel cells’ applications.

Funder

Science and Engineering Research Board

Publisher

Wiley

Subject

Materials Chemistry,Ceramics and Composites

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