Issue 19, 2025

Comprehensive impedance spectroscopy, Raman, and infrared studies of the ferroelectric properties and application of BiFeWO6

Abstract

Tetragonal double perovskite BiFeWO6 nanopowders were successfully synthesized via the solid-state reaction technique. Structural characterization using X-ray diffraction (XRD) revealed an average crystallite size of 11.6 nm with a lattice strain of 0.06499. The study of the microstructure of the sample reveals uniform distribution of well-grown grains and presence of all constituent elements in both weight and atomic percentages. Optical properties were investigated through ultraviolet (UV)-visible spectroscopy, which revealed a bandgap energy of 1.41 eV, highlighting its potential for photovoltaic applications. Raman spectroscopy confirmed the presence of all constituent elemental vibrational modes associated with various molecular bonding interactions in the studied material. Dielectric analysis exhibited a Maxwell–Wagner-type polarization effect, indicating its potential as a material with a high dielectric constant and low loss for energy storage devices. The study of impedance plots revealed a negative temperature coefficient of resistance (NTCR) behavior, whereas the electrical modulus study suggested the presence of a non-Debye-type relaxation mechanism. The study of AC conductivity versus frequency and temperature revealed the fact that the conduction mechanism is controlled by thermally activated charge carriers. Again, semicircular Nyquist and Cole–Cole plots confirmed the semiconductor nature and well-supported impedance results. The resistance versus temperature plot showed an NTC thermistor character, indicating that BiFeWO6 is a strong candidate for temperature sensor devices.

Graphical abstract: Comprehensive impedance spectroscopy, Raman, and infrared studies of the ferroelectric properties and application of BiFeWO6

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
13 Jun 2025
Accepted
10 Aug 2025
First published
12 Aug 2025
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2025,6, 6877-6893

Comprehensive impedance spectroscopy, Raman, and infrared studies of the ferroelectric properties and application of BiFeWO6

B. S. Tripathy, B. Umapathi, P. Nayak and S. K. Parida, Mater. Adv., 2025, 6, 6877 DOI: 10.1039/D5MA00643K

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements