Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior

doi:https://doi.org/10.1088/1361-648X/aa9b13

Title: Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior

Abstract

The extent of interfacial charge transfer and the resulting impact on magnetic interactions were investigated as a function of sublayer thickness in La _0.7Sr _0.3MnO ₃/La _0.7Sr _0.3CoO ₃ ferromagnetic superlattices. Element-specific soft x-ray magnetic spectroscopy reveals that the electronic structure is altered within 5–6 unit cells of the chemical interface, and can lead to a synthetic ferromagnet with strong magnetic coupling between the sublayers. The saturation magnetization and coercivity depends sensitively on the sublayer thickness due to the length scale of this interfacial effect. For larger sublayer thicknesses, the La _0.7Sr _0.3MnO ₃ and La _0.7Sr _0.3CoO ₃ sublayers are magnetically decoupled, displaying two independent magnetic transitions with little sublayer thickness dependence. Lastly, these results demonstrate how interfacial phenomena at perovskite oxide interfaces can be used to tailor their functional properties at the atomic scale.

Authors:

^[1]; Malik, Vivek K. ^[1]; Kane, Alexander M. ^[1]; Mehta, Apurva ^[2]; Arenholz, Elke ^[3];

^[1]

Univ. of California, Davis, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Publication Date:: 2017-12-04

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1432244

Alternate Identifier(s):: OSTI ID: 1425394

Grant/Contract Number:: AC02-05CH11231; AC02-76SF00515

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Journal of Physics. Condensed Matter

Additional Journal Information:: Journal Volume: 30; Journal Issue: 1; Journal ID: ISSN 0953-8984

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; superlattices; magnetic oxides; soft x-ray magnetic spectroscopy; interfaces

Citation Formats


                    Chopdekar, Rajesh V., Malik, Vivek K., Kane, Alexander M., Mehta, Apurva, Arenholz, Elke, and Takamura, Yayoi. Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior.  United States: N. p., 2017. 
        Web.  doi:10.1088/1361-648X/aa9b13.

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                    Chopdekar, Rajesh V., Malik, Vivek K., Kane, Alexander M., Mehta, Apurva, Arenholz, Elke, & Takamura, Yayoi. Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior.  United States.  https://doi.org/10.1088/1361-648X/aa9b13

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                    Chopdekar, Rajesh V., Malik, Vivek K., Kane, Alexander M., Mehta, Apurva, Arenholz, Elke, and Takamura, Yayoi. Mon .  
        "Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior".  United States.  https://doi.org/10.1088/1361-648X/aa9b13.  https://www.osti.gov/servlets/purl/1432244.

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@article{osti_1432244,

  title        = {Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior},

  author       = {Chopdekar, Rajesh V. and Malik, Vivek K. and Kane, Alexander M. and Mehta, Apurva and Arenholz, Elke and Takamura, Yayoi},

  abstractNote = {The extent of interfacial charge transfer and the resulting impact on magnetic interactions were investigated as a function of sublayer thickness in La0.7Sr0.3MnO3/La0.7Sr0.3CoO3 ferromagnetic superlattices. Element-specific soft x-ray magnetic spectroscopy reveals that the electronic structure is altered within 5–6 unit cells of the chemical interface, and can lead to a synthetic ferromagnet with strong magnetic coupling between the sublayers. The saturation magnetization and coercivity depends sensitively on the sublayer thickness due to the length scale of this interfacial effect. For larger sublayer thicknesses, the La0.7Sr0.3MnO3 and La0.7Sr0.3CoO3 sublayers are magnetically decoupled, displaying two independent magnetic transitions with little sublayer thickness dependence. Lastly, these results demonstrate how interfacial phenomena at perovskite oxide interfaces can be used to tailor their functional properties at the atomic scale.},

  doi          = {10.1088/1361-648X/aa9b13},

  url          = {https://www.osti.gov/biblio/1432244},
  journal      = {Journal of Physics. Condensed Matter},

  issn         = {0953-8984},

  number       = 1,

  volume       = 30,

  place        = {United States},

  year         = {2017},

  month        = {12}

}

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Journal Article:

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https://doi.org/10.1088/1361-648X/aa9b13

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Cited by: 2 works

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Figures / Tables:

Figure 1: (a) ω − 2θ XRD scans of the LSMO/LSCO SLs near the (0 0 2) LSAT peak and (b) resonant XRR spectra taken at different x-ray energies for the m = 10 LSMO/LSCO SL. Well pronounced SL peaks (denoted as ±1) and Kiessig fringes were observed for allmore »

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Works referencing / citing this record:

Correlation between epitaxial strain and magnetic properties in La _0.7 Sr _0.3 CoO ₃ /La _0.7 Sr _0.3 MnO ₃ bilayers
journal, February 2019

Byers, J. Paige; Li, Binzhi; Chopdekar, Rajesh V.
Journal of Applied Physics, Vol. 125, Issue 8
https://doi.org/10.1063/1.5054003

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Title: Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior

Abstract

Citation Formats

Figures / Tables:

Spin-Glass Behavior and Magnetic Phase Diagram of La 1- x Sr x CoO 3 ( 0 ≤ x ≤0.5) Studied by Magnetization Measurements journal, April 1994

Considerations on Double Exchange journal, October 1955

Thickness dependence of exchange coupling in (111)-oriented perovskite oxide superlattices journal, March 2016

Unconventional switching behavior in La 0.7 Sr 0.3 MnO 3 /La 0.7 Sr 0.3 CoO 3 exchange-spring bilayers journal, November 2014

A Thin Film Approach to Engineering Functionality into Oxides journal, August 2008

Competing interactions in ferromagnetic/antiferromagnetic perovskite superlattices journal, November 2009

Magnetic and Transport Properties of the System La1-xSrxCoO3-δ (0 < x ≤ 0.50) journal, September 1995

Complexity in Strongly Correlated Electronic Systems journal, July 2005

Misfit strain accommodation in epitaxial A B O 3 perovskites: Lattice rotations and lattice modulations journal, February 2011

Effect of Interfacial Octahedral Behavior in Ultrathin Manganite Films journal, April 2014

Strain-Induced Insulator State and Giant Gauge Factor of La 0.7 Sr 0.3 CoO 3 Films journal, February 2008

Intergranular Giant Magnetoresistance in a Spontaneously Phase Separated Perovskite Oxide journal, January 2005

Oscillatory Noncollinear Magnetism Induced by Interfacial Charge Transfer in Superlattices Composed of Metallic Oxides journal, November 2016

Magnetic correlation between La 0.7 Sr 0.3 MnO 3 and La 0.7 Sr 0.3 CoO 3 layers in artificial superlattices journal, April 2013

Tailoring Magnetic Interlayer Coupling in La 0.7 Sr 0.3 MnO 3 / SrRuO 3 Superlattices journal, April 2010

Critical thickness and orbital ordering in ultrathin La 0.7 Sr 0.3 MnO 3 films journal, September 2008

X-ray absorption and magnetic circular dichroism of LaCoO 3 , La 0.7 Ce 0.3 CoO 3 , and La 0.7 Sr 0.3 CoO 3 films: Evidence for cobalt-valence-dependent magnetism journal, November 2010

Suppression of Octahedral Tilts and Associated Changes in Electronic Properties at Epitaxial Oxide Heterostructure Interfaces journal, August 2010

Magnetic Phase Separation in L a 1 − x S r x C o O 3 by C o 59 Nuclear Magnetic Resonance journal, September 2003

High- T C ferromagnetic order in CaRuO 3 /La 2/3 Ca 1/3 MnO 3 superlattices journal, December 2013

Suppression of spin-state transition in epitaxially strained LaCoO 3 journal, November 2008

Electronic and Magnetic Reconstructions in La 0.7 Sr 0.3 MnO 3 / SrTiO 3 Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface journal, April 2011

Magnetic and electronic properties of La 1 − x Sr x Co O 3 single crystals across the percolation metal-insulator transition journal, October 2006

Effects of Double Exchange in Magnetic Crystals journal, April 1960

Colloquium : Emergent properties in plane view: Strong correlations at oxide interfaces journal, October 2014

Resonant x-ray reflectivity study of perovskite oxide superlattices journal, November 2011

Epitaxial Growth and Properties of Doped Transition Metal and Complex Oxide Films journal, January 2010

Thickness-dependent magnetic and electrical transport properties of epitaxial La 0.7 Sr 0.3 CoO 3 films journal, April 2017

Glassy ferromagnetism and magnetic phase separation in La 1 − x Sr x CoO 3 journal, May 2003

Why some interfaces cannot be sharp journal, January 2006

Insulator-metal transition and giant magnetoresistance in La 1 − x Sr x MnO 3 journal, May 1995

Orientation and thickness dependence of magnetization at the interfaces of highly spin-polarized manganite thin films journal, March 2009

Structural and magnetic properties of ultrathin epitaxial La0.7Ca0.3MnO3 manganite films: Strain versus finite size effects journal, July 2003

Electronic Reconstruction at SrMnO 3 − LaMnO 3 Superlattice Interfaces journal, November 2007

Finite-size shift of the Curie temperature of ferromagnetic lanthanum cobaltite thin films journal, March 2005

Critical features of colossal magnetoresistive manganites journal, February 2006

Chemically Driven Nanoscopic Magnetic Phase Separation at the SrTiO3(001)/La1-xSrxCoO3 Interface journal, April 2011

Microscopic origins for stabilizing room-temperature ferromagnetism in ultrathin manganite layers journal, June 2010

Tuning interfacial exchange interactions via electronic reconstruction in transition-metal oxide heterostructures journal, October 2016

Colossal magnetoresistance journal, September 1997

Artificial charge-modulationin atomic-scale perovskite titanate superlattices journal, September 2002

Double Exchange Alone Does Not Explain the Resistivity of La 1 − x Sr x MnO 3 journal, June 1995

Magnetically asymmetric interfaces in a LaMnO 3 / SrMnO 3 superlattice due to structural asymmetries journal, May 2008

Epitaxial La0.5Sr0.5CoO3 thin films: Structure, magnetism, and transport journal, July 2008

Electronic Properties of Mixed-Valence Manganates: The Role of Mn Substitutional Defects journal, February 2002

Magnetic Oxide Heterostructures journal, July 2014

Interrelation between Structure - Magnetic Properties in La 0.5 Sr 0.5 CoO 3 journal, July 2014

Correlation between epitaxial strain and magnetic properties in La 0.7 Sr 0.3 CoO 3 /La 0.7 Sr 0.3 MnO 3 bilayers journal, February 2019

Spin-Glass Behavior and Magnetic Phase Diagram of La _{1- x} Sr _x CoO ₃ ( 0 ≤ x ≤0.5) Studied by Magnetization Measurements
journal, April 1994

Considerations on Double Exchange
journal, October 1955

Thickness dependence of exchange coupling in (111)-oriented perovskite oxide superlattices
journal, March 2016

Unconventional switching behavior in La _0.7 Sr _0.3 MnO ₃ /La _0.7 Sr _0.3 CoO ₃ exchange-spring bilayers
journal, November 2014

A Thin Film Approach to Engineering Functionality into Oxides
journal, August 2008

Competing interactions in ferromagnetic/antiferromagnetic perovskite superlattices
journal, November 2009

Magnetic and Transport Properties of the System La_1-xSr_xCoO_3-δ (0 < x ≤ 0.50)
journal, September 1995

Complexity in Strongly Correlated Electronic Systems
journal, July 2005

Misfit strain accommodation in epitaxial $A B O_{3}$ perovskites: Lattice rotations and lattice modulations
journal, February 2011

Effect of Interfacial Octahedral Behavior in Ultrathin Manganite Films
journal, April 2014

Strain-Induced Insulator State and Giant Gauge Factor of ${La}_{0.7} {Sr}_{0.3} {CoO}_{3}$ Films
journal, February 2008

Intergranular Giant Magnetoresistance in a Spontaneously Phase Separated Perovskite Oxide
journal, January 2005

Oscillatory Noncollinear Magnetism Induced by Interfacial Charge Transfer in Superlattices Composed of Metallic Oxides
journal, November 2016

Magnetic correlation between La _0.7 Sr _0.3 MnO ₃ and La _0.7 Sr _0.3 CoO ₃ layers in artificial superlattices
journal, April 2013

Tailoring Magnetic Interlayer Coupling in ${La}_{0.7} {Sr}_{0.3} {MnO}_{3} / {SrRuO}_{3}$ Superlattices
journal, April 2010

Critical thickness and orbital ordering in ultrathin ${La}_{0.7} {Sr}_{0.3} {MnO}_{3}$ films
journal, September 2008

X-ray absorption and magnetic circular dichroism of ${LaCoO}_{3}$ , ${La}_{0.7} {Ce}_{0.3} {CoO}_{3}$ , and ${La}_{0.7} {Sr}_{0.3} {CoO}_{3}$ films: Evidence for cobalt-valence-dependent magnetism
journal, November 2010

Suppression of Octahedral Tilts and Associated Changes in Electronic Properties at Epitaxial Oxide Heterostructure Interfaces
journal, August 2010

Magnetic Phase Separation in ${L a}_{1 - x} {S r}_{x} C o O_{3}$ by ${}^{59}{C o}$ Nuclear Magnetic Resonance
journal, September 2003

High- T _C ferromagnetic order in CaRuO ₃ /La _2/3 Ca _1/3 MnO ₃ superlattices
journal, December 2013

Suppression of spin-state transition in epitaxially strained ${LaCoO}_{3}$
journal, November 2008

Electronic and Magnetic Reconstructions in ${La}_{0.7} {Sr}_{0.3} {MnO}_{3} / {SrTiO}_{3}$ Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface
journal, April 2011

Magnetic and electronic properties of ${La}_{1 - x} {Sr}_{x} Co O_{3}$ single crystals across the percolation metal-insulator transition
journal, October 2006

Effects of Double Exchange in Magnetic Crystals
journal, April 1960

Colloquium : Emergent properties in plane view: Strong correlations at oxide interfaces
journal, October 2014

Resonant x-ray reflectivity study of perovskite oxide superlattices
journal, November 2011

Epitaxial Growth and Properties of Doped Transition Metal and Complex Oxide Films
journal, January 2010

Thickness-dependent magnetic and electrical transport properties of epitaxial La _0.7 Sr _0.3 CoO ₃ films
journal, April 2017

Glassy ferromagnetism and magnetic phase separation in ${La}_{1 - x} {Sr}_{x} {CoO}_{3}$
journal, May 2003

Why some interfaces cannot be sharp
journal, January 2006

Insulator-metal transition and giant magnetoresistance in ${La}_{1 - x}$ ${Sr}_{x}$ ${MnO}_{3}$
journal, May 1995

Orientation and thickness dependence of magnetization at the interfaces of highly spin-polarized manganite thin films
journal, March 2009

Structural and magnetic properties of ultrathin epitaxial La0.7Ca0.3MnO3 manganite films: Strain versus finite size effects
journal, July 2003

Electronic Reconstruction at ${SrMnO}_{3} − {LaMnO}_{3}$ Superlattice Interfaces
journal, November 2007

Finite-size shift of the Curie temperature of ferromagnetic lanthanum cobaltite thin films
journal, March 2005

Critical features of colossal magnetoresistive manganites
journal, February 2006

Chemically Driven Nanoscopic Magnetic Phase Separation at the SrTiO3(001)/La1-xSrxCoO3 Interface
journal, April 2011

Microscopic origins for stabilizing room-temperature ferromagnetism in ultrathin manganite layers
journal, June 2010

Tuning interfacial exchange interactions via electronic reconstruction in transition-metal oxide heterostructures
journal, October 2016

Colossal magnetoresistance
journal, September 1997

Artificial charge-modulationin atomic-scale perovskite titanate superlattices
journal, September 2002

Double Exchange Alone Does Not Explain the Resistivity of ${La}_{1}_{- x} {Sr}_{x} {MnO}_{3}$
journal, June 1995

Magnetically asymmetric interfaces in a ${LaMnO}_{3} / {SrMnO}_{3}$ superlattice due to structural asymmetries
journal, May 2008

Epitaxial La0.5Sr0.5CoO3 thin films: Structure, magnetism, and transport
journal, July 2008

Electronic Properties of Mixed-Valence Manganates: The Role of Mn Substitutional Defects
journal, February 2002

Magnetic Oxide Heterostructures
journal, July 2014

Interrelation between Structure - Magnetic Properties in La _0.5 Sr _0.5 CoO ₃
journal, July 2014

Correlation between epitaxial strain and magnetic properties in La _0.7 Sr _0.3 CoO ₃ /La _0.7 Sr _0.3 MnO ₃ bilayers
journal, February 2019