Strain-induced ferromagnetism and magnetoresistance in epitaxial thin films of LaCoO3 prepared by polymer-assisted deposition

Francisco Rivadulla; Zhenxing Bi; Eve Bauer; Beatriz Rivas-Murias; José Manuel Vila-Fungueiriño; Quanxi Jia

doi:10.1021/cm3031472

Strain-induced ferromagnetism and magnetoresistance in epitaxial thin films of LaCoO₃ prepared by polymer-assisted deposition

Francisco Rivadulla
, Zhenxing Bi
, Eve Bauer
, Beatriz Rivas-Murias
, José Manuel Vila-Fungueiriño
, Quanxi Jia

Department of Materials Design and Innovation

University of Santiago de Compostela
Los Alamos National Laboratory

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

43 Scopus citations

Abstract

High quality epitaxial thin films of LaCoO₃ on SrTiO₃ have been prepared by spin-coating of a metal/polymeric aqueous solution. The films (≈ 17 nm) are homogeneous and smooth over large areas. The characteristic low-spin (LS) state is replaced by a higher spin configuration of Co(III), due to strain-induced distortions of the CoO₆ octahedra, introducing a ferromagnetic interaction and negative magnetoresistance below T_C = 85 K. This simple chemical method produces the high-quality films required for either fundamental studies or applications, similar to physical deposition techniques.

Original language	English
Pages (from-to)	55-58
Number of pages	4
Journal	Chemistry of Materials
Volume	25
Issue number	1
DOIs	https://doi.org/10.1021/cm3031472
State	Published - Jan 8 2013

Keywords

spin-state transition
thin-film solution synthesis

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10.1021/cm3031472

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title = "Strain-induced ferromagnetism and magnetoresistance in epitaxial thin films of LaCoO3 prepared by polymer-assisted deposition",

abstract = "High quality epitaxial thin films of LaCoO3 on SrTiO3 have been prepared by spin-coating of a metal/polymeric aqueous solution. The films (≈ 17 nm) are homogeneous and smooth over large areas. The characteristic low-spin (LS) state is replaced by a higher spin configuration of Co(III), due to strain-induced distortions of the CoO6 octahedra, introducing a ferromagnetic interaction and negative magnetoresistance below TC = 85 K. This simple chemical method produces the high-quality films required for either fundamental studies or applications, similar to physical deposition techniques.",

keywords = "spin-state transition, thin-film solution synthesis",

author = "Francisco Rivadulla and Zhenxing Bi and Eve Bauer and Beatriz Rivas-Murias and Vila-Fungueiri{\~n}o, \{Jos{\'e} Manuel\} and Quanxi Jia",

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doi = "10.1021/cm3031472",

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T1 - Strain-induced ferromagnetism and magnetoresistance in epitaxial thin films of LaCoO3 prepared by polymer-assisted deposition

AU - Rivadulla, Francisco

AU - Bi, Zhenxing

AU - Bauer, Eve

AU - Rivas-Murias, Beatriz

AU - Vila-Fungueiriño, José Manuel

AU - Jia, Quanxi

PY - 2013/1/8

Y1 - 2013/1/8

N2 - High quality epitaxial thin films of LaCoO3 on SrTiO3 have been prepared by spin-coating of a metal/polymeric aqueous solution. The films (≈ 17 nm) are homogeneous and smooth over large areas. The characteristic low-spin (LS) state is replaced by a higher spin configuration of Co(III), due to strain-induced distortions of the CoO6 octahedra, introducing a ferromagnetic interaction and negative magnetoresistance below TC = 85 K. This simple chemical method produces the high-quality films required for either fundamental studies or applications, similar to physical deposition techniques.

AB - High quality epitaxial thin films of LaCoO3 on SrTiO3 have been prepared by spin-coating of a metal/polymeric aqueous solution. The films (≈ 17 nm) are homogeneous and smooth over large areas. The characteristic low-spin (LS) state is replaced by a higher spin configuration of Co(III), due to strain-induced distortions of the CoO6 octahedra, introducing a ferromagnetic interaction and negative magnetoresistance below TC = 85 K. This simple chemical method produces the high-quality films required for either fundamental studies or applications, similar to physical deposition techniques.

KW - spin-state transition

KW - thin-film solution synthesis

UR - https://www.scopus.com/pages/publications/84872137922

U2 - 10.1021/cm3031472

DO - 10.1021/cm3031472

M3 - Article

AN - SCOPUS:84872137922

SN - 0897-4756

VL - 25

SP - 55

EP - 58

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 1

ER -

Strain-induced ferromagnetism and magnetoresistance in epitaxial thin films of LaCoO₃ prepared by polymer-assisted deposition

Abstract

Keywords

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