Oxygen Plasma-Induced Modification of Structural and Electrical Properties of Pr0.5Sr0.5MnO3 Manganites
Document Type
Article
Publication Title
Physica Status Solidi (A) Applications and Materials Science
Abstract
Herein, the impact of exposing the perovskite compound Pr0.5Sr0.5MnO3 to oxygen plasma is explored by comparing the structural and transport properties of the exposed samples to those of the unexposed ones. The Pr is oxidized to PrO2 in the investigated samples due to plasma exposure. The alterations in the transport properties can be linked to the changes in MnOMn bond angle and Mn-O bond length due to plasma exposure, as indicated by X-ray diffraction analysis. Additionally, exposure to oxygen plasma increases the conductivity by incorporating oxygen into the exposed samples, making them oxygen-rich. Detailed analysis of the resistivity and thermoelectric power data indicates that small polarons are responsible for conduction at high temperatures, while at low temperatures, variable range polarons take over. The negative value of the thermopower at all temperatures proclaims that the electrons behave as the dominant charge carriers.
DOI
10.1002/pssa.202400436
Publication Date
10-1-2024
Recommended Citation
Chettri, Pronita; Kunwar, Bhakta; Bhatt, Gurukrishna; and Mangavati, Suraj, "Oxygen Plasma-Induced Modification of Structural and Electrical Properties of Pr0.5Sr0.5MnO3 Manganites" (2024). Open Access archive. 9990.
https://impressions.manipal.edu/open-access-archive/9990
