Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

V. A. Vas'ko; C. A. Nordman; P. A. Kraus; V. S. Achutharaman; A. R. Ruosi; A. M. Goldman

doi:10.1063/1.116187

Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

V. A. Vas'ko, C. A. Nordman, P. A. Kraus, V. S. Achutharaman, A. R. Ruosi, A. M. Goldman

Physics and Astronomy (Twin Cities)

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Abstract

We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 Å in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 Å. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.

Original language	English (US)
Pages (from-to)	2571-2573
Number of pages	3
Journal	Applied Physics Letters
Volume	68
Issue number	18
DOIs	https://doi.org/10.1063/1.116187
State	Published - 1996

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title = "Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d",

abstract = "We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 {\AA} in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 {\AA}. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.",

author = "Vas'ko, {V. A.} and Nordman, {C. A.} and Kraus, {P. A.} and Achutharaman, {V. S.} and Ruosi, {A. R.} and Goldman, {A. M.}",

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T1 - Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

AU - Vas'ko, V. A.

AU - Nordman, C. A.

AU - Kraus, P. A.

AU - Achutharaman, V. S.

AU - Ruosi, A. R.

AU - Goldman, A. M.

PY - 1996

Y1 - 1996

N2 - We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 Å in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 Å. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.

AB - We report the growth and characterization of ultra-smooth, highly ordered, strained La2/3Ca1/3MnO3±d thin films (approximately 600 Å in thickness). The thin films were deposited by ozone-assisted, block-by-block, molecular beam epitaxy on SrTiO3 (001) substrates without any post-deposition annealing. Scanning tunneling microscopy images showed oriented, unit-cell-high terraces characteristic of a step-flow growth mechanism. The root-mean-square roughness of the surface of an imaged film was determined to be 2 Å. This same film showed negative magnetoresistance values, [R(H=0)-R(Happlied)]/R(H=0), at 150 K of 93% and 5% in applied magnetic fields of 5.12 and 4×10-2 T, respectively.

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Ultra-smooth, highly ordered, thin films of La0.67Ca0.33MnO3±d

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