Articles written in Bulletin of Materials Science

• Structural, impedance and electrical evaluation of complex perovskite: Ca(Mn$_{1/3}$Ni$_{1/3}$W$_{1/3}$)O$_3$

A complex perovskite Ca(Mn$_{1/3}$Ni$_{1/3}$W$_{1/3}$)O$_3$, abbreviated as CMNWO, is synthesized by adopting the solid-stateceramic procedure. The X-ray diffraction analysis of CMNWO shows that the present perovskite is acquiring a cubic crystal structure having the cell dimension of $a = 3.8321$ Å. The obtained cell parameter is in good agreement with the theoretical cell parameter obtained from the SPuDS-V2.19.05.14 code. The micrograph describes the uniform grain distribution in the CMNWO sample. The average crystallite size of the sample was found to be 50.98 nm, which was calculated using the Scherrer relation. The dielectric and electrical properties like dielectric constant, dissipation factor, impedance, electrical modulus and conductivity of CMNWO were studied. The activation energies were determined from the AC-conductivity data in the temperature range of 200–350$^{\circ}$C and 360–500$^{\circ}$C. The dielectric spectra with temperature suggest that the present CMNWO is semiconducting in nature and follows the negative temperature coefficient of resistance kind of behaviour.

• # Bulletin of Materials Science

Volume 43, 2020
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020

Physical Sciences 2020

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019