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

被引：48

作者：

Choi, W. S. ^{[1
,2
]}

Marton, Z. ^{[3
]}

Jang, S. Y. ^{[1
,2
]}

Moon, S. J. ^{[1
,2
]}

Jeon, B. C. ^{[1
,2
]}

Shin, J. H. ^{[1
,2
]}

Seo, S. S. A. ^{[3
]}

Noh, T. W. ^{[1
,2
]}

Myung-Whun, K. ^{[4
]}

Lee, H. N. ^{[3
]}

Lee, Y. S. ^{[5
]}

机构：

[1] Seoul Natl Univ, Dept Phys & Astron, ReCOE, Seoul 151747, South Korea

[2] Seoul Natl Univ, Dept Phys & Astron, FPRD, Seoul 151747, South Korea

[3] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[4] Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea

[5] Soongsil Univ, Dept Phys, Seoul 156743, South Korea

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 16期

基金：

新加坡国家研究基金会;

关键词：

SPECTRA; ORIGIN;

D O I：

10.1088/0022-3727/42/16/165401

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：4

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