Issue 19, 2025

Structural, thermodynamic, electrical and dielectric properties of SrZnP2O7 diphosphates compared to SrAII P2O7 (A = Sr and Ni) with analysis of OLPT conduction mechanism

Abstract

A polycrystalline sample of SrZnP2O7 was successfully synthesized via the conventional solid-state reaction method. Its structural and vibrational properties were characterized using X-ray powder diffraction (XRD) and infrared (IR) spectroscopy, while its electrical and dielectric properties were investigated through impedance spectroscopy. XRD analysis confirmed the formation of a single-phase compound crystallizing in the monoclinic system with space group P21/n. The IR spectrum revealed all the expected vibrational modes associated with the P2O7 polyhedral units. Electrical conductivity measurements, carried out over a frequency range of 209 Hz to 1 MHz and a temperature range of 550 K to 711 K, were used to analyze the conduction mechanism. The temperature dependence of the frequency exponent ā€œsā€ indicated that the conduction in SrZnP2O7 follows the overlapping large polaron tunneling (OLPT) model. A strong correlation between the material's structure and its electrical performance was established. Furthermore, comparative analysis with previously reported compounds, Sr2P2O7 and SrNiP2O7, demonstrated that SrZnP2O7 exhibits superior ionic conductivity, highlighting its promising potential for applications in solid-state ionic devices.

Graphical abstract: Structural, thermodynamic, electrical and dielectric properties of SrZnP2O7 diphosphates compared to SrAII P2O7 (A = Sr and Ni) with analysis of OLPT conduction mechanism

Article information

Article type
Paper
Submitted
26 Feb. 2025
Accepted
26 Apr. 2025
First published
29 Apr. 2025

Phys. Chem. Chem. Phys., 2025,27, 10413-10425

Structural, thermodynamic, electrical and dielectric properties of SrZnP2O7 diphosphates compared to SrAII P2O7 (A = Sr and Ni) with analysis of OLPT conduction mechanism

K. Marwa and M. Makram, Phys. Chem. Chem. Phys., 2025, 27, 10413 DOI: 10.1039/D5CP00766F

To request permission to reproduce material from this article, 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 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