Comparative Study of Persistent Photo-Induced Magnetization in Low and Intermediate Bandwidth Manganite Thin Films

Sayani Majumdar, H. Huhtinen, P. Paturi

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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.
Original languageEnglish
Pages (from-to)1455-1459
JournalJournal of Superconductivity and Novel Magnetism
Volume26
Issue number5
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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Magnetization
bandwidth
Bandwidth
Thin films
magnetization
thin films
Magnetooptical devices
saturation
Manganites
perovskites
Photodiodes
Perovskite
photodiodes
Structural properties
Magnetic properties
Physics
Lighting
illumination
interactions
magnetic properties

Cite this

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title = "Comparative Study of Persistent Photo-Induced Magnetization in Low and Intermediate Bandwidth Manganite Thin Films",
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.",
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Comparative Study of Persistent Photo-Induced Magnetization in Low and Intermediate Bandwidth Manganite Thin Films. / Majumdar, Sayani; Huhtinen, H.; Paturi, P.

In: Journal of Superconductivity and Novel Magnetism, Vol. 26, No. 5, 2013, p. 1455-1459.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Comparative Study of Persistent Photo-Induced Magnetization in Low and Intermediate Bandwidth Manganite Thin Films

AU - Majumdar, Sayani

AU - Huhtinen, H.

AU - Paturi, P.

PY - 2013

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N2 - 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.

AB - 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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SN - 1557-1939

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