Crystallite Size Effect on Lattice Strain and Crystal Structure of Ba1/4Sr3/4MnO3 Layered Perovskite Manganite

TL;DR

This study investigates how crystallite size influences lattice strain and crystal structure in Ba1/4Sr3/4MnO3 layered perovskite manganite, revealing size-dependent structural variations using X-ray diffraction and microstructural analysis.

Contribution

It provides new insights into the relationship between crystallite size, lattice strain, and crystal structure in Ba1/4Sr3/4MnO3, using Rietveld refinement and Williamson-Hall analysis.

Findings

Lattice parameters decrease with increasing crystallite size.

Lattice strain increases as crystallite size increases.

Crystallite size affects the structural properties of the material.

Abstract

The single phase polycrystalline Ba1/4Sr3/4MnO3 layered perovskite manganite has been synthesized by combustion method having various crystallite sizes. The room temperature X-ray diffraction patterns reveal that Ba1/4Sr3/4MnO3 crystallizes into hexagonal crystal structure with space group P63/mmc as confirmed by Rietveld refinement. The scanning electron micrographs of Ba1/4Sr3/4MnO3 reveal uniform crystallite size of the samples. Effect of crystallite size on lattice strain and crystal structure has been studied using Rietveld refinement and Williamson-Hall plot, respectively. The structural lattice parameters decrease with increasing crystallite size. However, lattice strain increases with increasing crystallite-size.