Transmission electron microscopy of La0.67Sr0.33MnO3/SrTiO3/La 0.67Sr0.33 MnO3 heterostructures grown by pulsed laser deposition on (001) SrTiO3

J. L. Maurice; R. Lyonnet; J. P. Contour

doi:10.1016/S0304-8853(99)00718-0

Transmission electron microscopy of La_0.67Sr_0.33MnO₃/SrTiO₃/La _0.67Sr_0.33 MnO₃ heterostructures grown by pulsed laser deposition on (001) SrTiO₃

J. L. Maurice, R. Lyonnet, J. P. Contour

Université Paris-Sud

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have analysed by cross-section transmission electron microscopy (XTEM) La_0.67Sr_0.33MnO₃/SrTiO₃/La _0.67Sr_0.33MnO₃ tunnel junctions epitaxially grown on (001) SrTiO₃ by pulsed laser deposition (PLD). La_0.67Sr_0.33MnO₃ (LSMO) is rhombohedral in bulk (pseudo-cubic with an angle of 89.76°); its epitaxy on SrTiO₃ raises two kinds of questions: (1) are the interfaces chemically abrupt? And (2) is the LSMO strained to a tetragonal phase that would fit the cubic substrate? In the present paper, we show, using high-resolution TEM (HRTEM) micrographs and a semi-quantitative technique based on Chemical Mapping (A. Ourmazd et al., Ultramicroscopy 34 (1990) 237) that the extent of roughness or interdiffusion at the interfaces is less than a single unit cell. On the other hand, we deduce from electron diffraction that the LSMO films are at least partially relaxed.

Original language	English
Pages (from-to)	91-96
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	211
Issue number	1-3
DOIs	https://doi.org/10.1016/S0304-8853(99)00718-0
Publication status	Published - 1 Jan 2000
Externally published	Yes
Event	E-MRS Spring Meeting 1999 - Symposium G: Material Physics Issues and Applications of Magnetic Oxides - Strasbourg, France Duration: 1 Jun 1999 → 4 Jun 1999

Keywords

Pulsed laser deposition
Thin films
Transmission electron microscopy

Access to Document

10.1016/S0304-8853(99)00718-0

Cite this

@article{c0d794cbcb1b4e8b8e45ebbb1fdebcdc,

title = "Transmission electron microscopy of La0.67Sr0.33MnO3/SrTiO3/La 0.67Sr0.33 MnO3 heterostructures grown by pulsed laser deposition on (001) SrTiO3",

abstract = "We have analysed by cross-section transmission electron microscopy (XTEM) La0.67Sr0.33MnO3/SrTiO3/La 0.67Sr0.33MnO3 tunnel junctions epitaxially grown on (001) SrTiO3 by pulsed laser deposition (PLD). La0.67Sr0.33MnO3 (LSMO) is rhombohedral in bulk (pseudo-cubic with an angle of 89.76°); its epitaxy on SrTiO3 raises two kinds of questions: (1) are the interfaces chemically abrupt? And (2) is the LSMO strained to a tetragonal phase that would fit the cubic substrate? In the present paper, we show, using high-resolution TEM (HRTEM) micrographs and a semi-quantitative technique based on Chemical Mapping (A. Ourmazd et al., Ultramicroscopy 34 (1990) 237) that the extent of roughness or interdiffusion at the interfaces is less than a single unit cell. On the other hand, we deduce from electron diffraction that the LSMO films are at least partially relaxed.",

keywords = "Pulsed laser deposition, Thin films, Transmission electron microscopy",

author = "Maurice, \{J. L.\} and R. Lyonnet and Contour, \{J. P.\}",

year = "2000",

month = jan,

day = "1",

doi = "10.1016/S0304-8853(99)00718-0",

language = "English",

volume = "211",

pages = "91--96",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

number = "1-3",

note = "E-MRS Spring Meeting 1999 - Symposium G: Material Physics Issues and Applications of Magnetic Oxides ; Conference date: 01-06-1999 Through 04-06-1999",

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TY - JOUR

T1 - Transmission electron microscopy of La0.67Sr0.33MnO3/SrTiO3/La 0.67Sr0.33 MnO3 heterostructures grown by pulsed laser deposition on (001) SrTiO3

AU - Maurice, J. L.

AU - Lyonnet, R.

AU - Contour, J. P.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - We have analysed by cross-section transmission electron microscopy (XTEM) La0.67Sr0.33MnO3/SrTiO3/La 0.67Sr0.33MnO3 tunnel junctions epitaxially grown on (001) SrTiO3 by pulsed laser deposition (PLD). La0.67Sr0.33MnO3 (LSMO) is rhombohedral in bulk (pseudo-cubic with an angle of 89.76°); its epitaxy on SrTiO3 raises two kinds of questions: (1) are the interfaces chemically abrupt? And (2) is the LSMO strained to a tetragonal phase that would fit the cubic substrate? In the present paper, we show, using high-resolution TEM (HRTEM) micrographs and a semi-quantitative technique based on Chemical Mapping (A. Ourmazd et al., Ultramicroscopy 34 (1990) 237) that the extent of roughness or interdiffusion at the interfaces is less than a single unit cell. On the other hand, we deduce from electron diffraction that the LSMO films are at least partially relaxed.

AB - We have analysed by cross-section transmission electron microscopy (XTEM) La0.67Sr0.33MnO3/SrTiO3/La 0.67Sr0.33MnO3 tunnel junctions epitaxially grown on (001) SrTiO3 by pulsed laser deposition (PLD). La0.67Sr0.33MnO3 (LSMO) is rhombohedral in bulk (pseudo-cubic with an angle of 89.76°); its epitaxy on SrTiO3 raises two kinds of questions: (1) are the interfaces chemically abrupt? And (2) is the LSMO strained to a tetragonal phase that would fit the cubic substrate? In the present paper, we show, using high-resolution TEM (HRTEM) micrographs and a semi-quantitative technique based on Chemical Mapping (A. Ourmazd et al., Ultramicroscopy 34 (1990) 237) that the extent of roughness or interdiffusion at the interfaces is less than a single unit cell. On the other hand, we deduce from electron diffraction that the LSMO films are at least partially relaxed.

KW - Pulsed laser deposition

KW - Thin films

KW - Transmission electron microscopy

U2 - 10.1016/S0304-8853(99)00718-0

DO - 10.1016/S0304-8853(99)00718-0

M3 - Conference article

AN - SCOPUS:0033882666

SN - 0304-8853

VL - 211

SP - 91

EP - 96

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-3

T2 - E-MRS Spring Meeting 1999 - Symposium G: Material Physics Issues and Applications of Magnetic Oxides

Y2 - 1 June 1999 through 4 June 1999