A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Comparative Study of Persistent Photo-Induced Magnetization in Low and Intermediate Bandwidth Manganite Thin Films
Tekijät: Majumdar S, Huhtinen H, Paturi P
Kustantaja: SPRINGER
Julkaisuvuosi: 2013
Journal: Journal of Superconductivity and Novel Magnetism
Tietokannassa oleva lehden nimi: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
Lehden akronyymi: J SUPERCOND NOV MAGN
Numero sarjassa: 5
Vuosikerta: 26
Numero: 5
Aloitussivu: 1455
Lopetussivu: 1459
Sivujen määrä: 5
ISSN: 1557-1939
DOI: https://doi.org/10.1007/s10948-012-1970-x
Tiivistelmä
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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