Effects of oxygen-reducing atmosphere annealing on LaMnO3 epitaxial thin films

W. S. Choi; Z. Marton; S. Y. Jang; S. J. Moon; B. C. Jeon; J. H. Shin; S. S.A. Seo; T. W. Noh; K. Myung-Whun; H. N. Lee; Y. S. Lee

doi:10.1088/0022-3727/42/16/165401

Effects of oxygen-reducing atmosphere annealing on LaMnO₃ epitaxial thin films

W. S. Choi, Z. Marton, S. Y. Jang, S. J. Moon, B. C. Jeon, J. H. Shin, S. S.A. Seo, T. W. Noh, K. Myung-Whun, H. N. Lee, Y. S. Lee

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Abstract

We investigated the effects of annealing on LaMnO₃ epitaxial thin films grown by pulsed laser deposition (PLD) and propose an efficient method of characterizing their stoichiometry. Structural, magnetic and optical properties coherently indicate non-stoichiometric ferromagnetic and semiconducting phases for as-grown LaMnO₃ films. By annealing in an oxygen-reducing atmosphere, we recovered the antiferromagnetic and insulating phases of bulk-like stoichiometric LaMnO₃. We show that non-destructive optical spectroscopy at room temperature is one of the most convenient tools for identifying the phases of LaMnO₃ films. Our results serve as a prerequisite for studying LaMnO₃ based heterostructures grown by PLD.

Original language	English
Article number	165401
Journal	Journal of Physics D: Applied Physics
Volume	42
Issue number	16
DOIs	https://doi.org/10.1088/0022-3727/42/16/165401
State	Published - 2009

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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10.1088/0022-3727/42/16/165401

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title = "Effects of oxygen-reducing atmosphere annealing on LaMnO3 epitaxial thin films",

abstract = "We investigated the effects of annealing on LaMnO3 epitaxial thin films grown by pulsed laser deposition (PLD) and propose an efficient method of characterizing their stoichiometry. Structural, magnetic and optical properties coherently indicate non-stoichiometric ferromagnetic and semiconducting phases for as-grown LaMnO3 films. By annealing in an oxygen-reducing atmosphere, we recovered the antiferromagnetic and insulating phases of bulk-like stoichiometric LaMnO3. We show that non-destructive optical spectroscopy at room temperature is one of the most convenient tools for identifying the phases of LaMnO3 films. Our results serve as a prerequisite for studying LaMnO3 based heterostructures grown by PLD.",

author = "Choi, {W. S.} and Z. Marton and Jang, {S. Y.} and Moon, {S. J.} and Jeon, {B. C.} and Shin, {J. H.} and Seo, {S. S.A.} and Noh, {T. W.} and K. Myung-Whun and Lee, {H. N.} and Lee, {Y. S.}",

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T1 - Effects of oxygen-reducing atmosphere annealing on LaMnO3 epitaxial thin films

AU - Choi, W. S.

AU - Marton, Z.

AU - Jang, S. Y.

AU - Moon, S. J.

AU - Jeon, B. C.

AU - Shin, J. H.

AU - Seo, S. S.A.

AU - Noh, T. W.

AU - Myung-Whun, K.

AU - Lee, H. N.

AU - Lee, Y. S.

PY - 2009

Y1 - 2009

N2 - We investigated the effects of annealing on LaMnO3 epitaxial thin films grown by pulsed laser deposition (PLD) and propose an efficient method of characterizing their stoichiometry. Structural, magnetic and optical properties coherently indicate non-stoichiometric ferromagnetic and semiconducting phases for as-grown LaMnO3 films. By annealing in an oxygen-reducing atmosphere, we recovered the antiferromagnetic and insulating phases of bulk-like stoichiometric LaMnO3. We show that non-destructive optical spectroscopy at room temperature is one of the most convenient tools for identifying the phases of LaMnO3 films. Our results serve as a prerequisite for studying LaMnO3 based heterostructures grown by PLD.

AB - We investigated the effects of annealing on LaMnO3 epitaxial thin films grown by pulsed laser deposition (PLD) and propose an efficient method of characterizing their stoichiometry. Structural, magnetic and optical properties coherently indicate non-stoichiometric ferromagnetic and semiconducting phases for as-grown LaMnO3 films. By annealing in an oxygen-reducing atmosphere, we recovered the antiferromagnetic and insulating phases of bulk-like stoichiometric LaMnO3. We show that non-destructive optical spectroscopy at room temperature is one of the most convenient tools for identifying the phases of LaMnO3 films. Our results serve as a prerequisite for studying LaMnO3 based heterostructures grown by PLD.

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JF - Journal of Physics D: Applied Physics

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Effects of oxygen-reducing atmosphere annealing on LaMnO₃ epitaxial thin films

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