Epitaxial LSMO films grown on MgO single crystalline substrates

M. Španková; S. Chromik; I. Vávra; K. Sedláčková; P. Lobotka; S. Lucas; S. Stanček

doi:10.1016/j.apsusc.2007.03.058

Epitaxial LSMO films grown on MgO single crystalline substrates

M. Španková, S. Chromik, I. Vávra, K. Sedláčková, P. Lobotka, S. Lucas, S. Stanček

Namur Research Institute for Life Sciences

Research output: Contribution to journal › Article

Abstract

The manganite LaSrMnO (LSMO) layers are deposited on single crystal MgO(0 0 1) substrates using a magnetron dc sputtering. The crystalline perfection of the layers, both the as-prepared and the annealed, are characterized by X-ray diffraction technique, rocking curve measurements, Rutherford backscattering spectroscopy (RBS) and transmission electron microscopy (TEM). TEM analyses give evidence of the epitaxial growth of the annealed LSMO with a nanocrystalline surface layer. The temperature dependence of resistance in the 77-340 K range is measured by a standard four-probe technique. While the as-prepared film does not show any transition from paramagnetic to ferromagnetic state, the film annealed in oxygen shows steep R(T) dependence with a peak at 330 K and maximal slope (dR/dT) at 290 K where the maximal sensitivity is 3% K.

Original language	English
Pages (from-to)	7599-7603
Number of pages	5
Journal	Applied Surface Science
Volume	253
Issue number	18
DOIs	https://doi.org/10.1016/j.apsusc.2007.03.058
Publication status	Published - 15 Jul 2007

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Španková, M., Chromik, S., Vávra, I., Sedláčková, K., Lobotka, P., Lucas, S., & Stanček, S. (2007). Epitaxial LSMO films grown on MgO single crystalline substrates. Applied Surface Science, 253(18), 7599-7603. https://doi.org/10.1016/j.apsusc.2007.03.058

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abstract = "The manganite LaSrMnO (LSMO) layers are deposited on single crystal MgO(0 0 1) substrates using a magnetron dc sputtering. The crystalline perfection of the layers, both the as-prepared and the annealed, are characterized by X-ray diffraction technique, rocking curve measurements, Rutherford backscattering spectroscopy (RBS) and transmission electron microscopy (TEM). TEM analyses give evidence of the epitaxial growth of the annealed LSMO with a nanocrystalline surface layer. The temperature dependence of resistance in the 77-340 K range is measured by a standard four-probe technique. While the as-prepared film does not show any transition from paramagnetic to ferromagnetic state, the film annealed in oxygen shows steep R(T) dependence with a peak at 330 K and maximal slope (dR/dT) at 290 K where the maximal sensitivity is 3% K.",

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T1 - Epitaxial LSMO films grown on MgO single crystalline substrates

AU - Španková, M.

AU - Chromik, S.

AU - Vávra, I.

AU - Sedláčková, K.

AU - Lobotka, P.

AU - Lucas, S.

AU - Stanček, S.

PY - 2007/7/15

Y1 - 2007/7/15

N2 - The manganite LaSrMnO (LSMO) layers are deposited on single crystal MgO(0 0 1) substrates using a magnetron dc sputtering. The crystalline perfection of the layers, both the as-prepared and the annealed, are characterized by X-ray diffraction technique, rocking curve measurements, Rutherford backscattering spectroscopy (RBS) and transmission electron microscopy (TEM). TEM analyses give evidence of the epitaxial growth of the annealed LSMO with a nanocrystalline surface layer. The temperature dependence of resistance in the 77-340 K range is measured by a standard four-probe technique. While the as-prepared film does not show any transition from paramagnetic to ferromagnetic state, the film annealed in oxygen shows steep R(T) dependence with a peak at 330 K and maximal slope (dR/dT) at 290 K where the maximal sensitivity is 3% K.

AB - The manganite LaSrMnO (LSMO) layers are deposited on single crystal MgO(0 0 1) substrates using a magnetron dc sputtering. The crystalline perfection of the layers, both the as-prepared and the annealed, are characterized by X-ray diffraction technique, rocking curve measurements, Rutherford backscattering spectroscopy (RBS) and transmission electron microscopy (TEM). TEM analyses give evidence of the epitaxial growth of the annealed LSMO with a nanocrystalline surface layer. The temperature dependence of resistance in the 77-340 K range is measured by a standard four-probe technique. While the as-prepared film does not show any transition from paramagnetic to ferromagnetic state, the film annealed in oxygen shows steep R(T) dependence with a peak at 330 K and maximal slope (dR/dT) at 290 K where the maximal sensitivity is 3% K.

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