Large magnetoresistance effect in as-grown epitaxial LaxCa1-xMnO3 films prepared by a molecular beam epitaxy coevaporation technique

A. Miniotas; U. O. Karlsson; A. Brazdeikis; C. W. Chu

doi:10.1116/1.581272

Large magnetoresistance effect in as-grown epitaxial La_xCa_1-xMnO₃ films prepared by a molecular beam epitaxy coevaporation technique

A. Miniotas, U. O. Karlsson, A. Brazdeikis, C. W. Chu

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4 Citations (Scopus)

Abstract

Thin films of La_xCa_1-xMnO₃ (0.64≤x≤0.68) have been grown by NO₂-assisted molecular beam epitaxy on single crystal SrTiO₃(100) and LaAlO₃(100) substrates. As-grown films are found to be grown epitaxially, b-axis oriented on both SrTiO₃ and LaAlO₃ substrates, and exhibit a large magnetoresistance effect {[R(0) - R(H)]/R(H)X100} of about 1500% at 214 K. The magnetoresistance effect values obtained are similar to those reported for as-grown La_xCa_1-xMnO₃ (0.60≤x≤0.7) films synthesized either by so-called "block-by-block" or "layer-by-layer" molecular beam epitaxy techniques, but the effect appears at significantly higher temperatures. For epitaxial La_0.68Ca_0.32MnO₃ films grown on SrTiO₃ a relatively large resistance suppression of 200% at 1.0 T is observed.

Original language	English
Pages (from-to)	1268-1271
Number of pages	4
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	16
Issue number	3
DOIs	https://doi.org/10.1116/1.581272
Publication status	Published - 1998

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

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title = "Large magnetoresistance effect in as-grown epitaxial LaxCa1-xMnO3 films prepared by a molecular beam epitaxy coevaporation technique",

abstract = "Thin films of LaxCa1-xMnO3 (0.64≤x≤0.68) have been grown by NO2-assisted molecular beam epitaxy on single crystal SrTiO3(100) and LaAlO3(100) substrates. As-grown films are found to be grown epitaxially, b-axis oriented on both SrTiO3 and LaAlO3 substrates, and exhibit a large magnetoresistance effect {[R(0) - R(H)]/R(H)X100} of about 1500% at 214 K. The magnetoresistance effect values obtained are similar to those reported for as-grown LaxCa1-xMnO3 (0.60≤x≤0.7) films synthesized either by so-called {"}block-by-block{"} or {"}layer-by-layer{"} molecular beam epitaxy techniques, but the effect appears at significantly higher temperatures. For epitaxial La0.68Ca0.32MnO3 films grown on SrTiO3 a relatively large resistance suppression of 200% at 1.0 T is observed.",

author = "A. Miniotas and Karlsson, {U. O.} and A. Brazdeikis and Chu, {C. W.}",

year = "1998",

doi = "10.1116/1.581272",

language = "English",

volume = "16",

pages = "1268--1271",

journal = "Journal of Vacuum Science and Technology A",

issn = "0734-2101",

publisher = "AVS Science and Technology Society",

number = "3",

}

Large magnetoresistance effect in as-grown epitaxial La_xCa_1-xMnO₃ films prepared by a molecular beam epitaxy coevaporation technique. / Miniotas, A.; Karlsson, U. O.; Brazdeikis, A.; Chu, C. W.

In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 16, No. 3, 1998, p. 1268-1271.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Large magnetoresistance effect in as-grown epitaxial LaxCa1-xMnO3 films prepared by a molecular beam epitaxy coevaporation technique

AU - Miniotas, A.

AU - Karlsson, U. O.

AU - Brazdeikis, A.

AU - Chu, C. W.

PY - 1998

Y1 - 1998

N2 - Thin films of LaxCa1-xMnO3 (0.64≤x≤0.68) have been grown by NO2-assisted molecular beam epitaxy on single crystal SrTiO3(100) and LaAlO3(100) substrates. As-grown films are found to be grown epitaxially, b-axis oriented on both SrTiO3 and LaAlO3 substrates, and exhibit a large magnetoresistance effect {[R(0) - R(H)]/R(H)X100} of about 1500% at 214 K. The magnetoresistance effect values obtained are similar to those reported for as-grown LaxCa1-xMnO3 (0.60≤x≤0.7) films synthesized either by so-called "block-by-block" or "layer-by-layer" molecular beam epitaxy techniques, but the effect appears at significantly higher temperatures. For epitaxial La0.68Ca0.32MnO3 films grown on SrTiO3 a relatively large resistance suppression of 200% at 1.0 T is observed.

AB - Thin films of LaxCa1-xMnO3 (0.64≤x≤0.68) have been grown by NO2-assisted molecular beam epitaxy on single crystal SrTiO3(100) and LaAlO3(100) substrates. As-grown films are found to be grown epitaxially, b-axis oriented on both SrTiO3 and LaAlO3 substrates, and exhibit a large magnetoresistance effect {[R(0) - R(H)]/R(H)X100} of about 1500% at 214 K. The magnetoresistance effect values obtained are similar to those reported for as-grown LaxCa1-xMnO3 (0.60≤x≤0.7) films synthesized either by so-called "block-by-block" or "layer-by-layer" molecular beam epitaxy techniques, but the effect appears at significantly higher temperatures. For epitaxial La0.68Ca0.32MnO3 films grown on SrTiO3 a relatively large resistance suppression of 200% at 1.0 T is observed.

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Large magnetoresistance effect in as-grown epitaxial La_xCa_1-xMnO₃ films prepared by a molecular beam epitaxy coevaporation technique

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