A1 Refereed original research article in a scientific journal
Comparative Study of Persistent Photo-Induced Magnetization in Low and Intermediate Bandwidth Manganite Thin Films
Authors: Majumdar S, Huhtinen H, Paturi P
Publisher: SPRINGER
Publication year: 2013
Journal: Journal of Superconductivity and Novel Magnetism
Journal name in source: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
Journal acronym: J SUPERCOND NOV MAGN
Number in series: 5
Volume: 26
Issue: 5
First page : 1455
Last page: 1459
Number of pages: 5
ISSN: 1557-1939
DOI: https://doi.org/10.1007/s10948-012-1970-x
Abstract
This article presents a comparative study of persistent photo-induced magnetization in intermediate and low bandwidth perovskite manganite thin films, and analyzes the possible mechanisms for the observed differences in light of their structural and magnetic properties. Intermediate bandwidth manganite La0.9Ca0.1MnO3 (LCMO) and low bandwidth manganite Pr0.9Ca0.1MnO3 (PCMO), both show persistent change in magnetization under light. However, under illumination, while LCMO shows increased ferromagnetic (FM) interaction both in low and saturation field regime, PCMO shows increased FM interaction at low fields and decreased FM behavior near saturation fields. Also relaxation of photo-induced magnetization shows stretched exponential nature in LCMO compared to much faster relaxation, beyond detection limit in PCMO. Comparison between these two systems will provide important insight of the underlying physics of persistent photo-induced magnetization of perovskites manganites and will consequently facilitate their application in magneto-optical devices, photodiodes and photovoltaics.
This article presents a comparative study of persistent photo-induced magnetization in intermediate and low bandwidth perovskite manganite thin films, and analyzes the possible mechanisms for the observed differences in light of their structural and magnetic properties. Intermediate bandwidth manganite La0.9Ca0.1MnO3 (LCMO) and low bandwidth manganite Pr0.9Ca0.1MnO3 (PCMO), both show persistent change in magnetization under light. However, under illumination, while LCMO shows increased ferromagnetic (FM) interaction both in low and saturation field regime, PCMO shows increased FM interaction at low fields and decreased FM behavior near saturation fields. Also relaxation of photo-induced magnetization shows stretched exponential nature in LCMO compared to much faster relaxation, beyond detection limit in PCMO. Comparison between these two systems will provide important insight of the underlying physics of persistent photo-induced magnetization of perovskites manganites and will consequently facilitate their application in magneto-optical devices, photodiodes and photovoltaics.
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