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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:
ORCiD logo [1];  [1];  [1];  [2];  [3]; ORCiD logo [1]
  1. Univ. of California, Davis, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
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.
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
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.
@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}
}

Journal Article:
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Cited by: 2 works
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Figures / Tables:

Figure 1 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 » samples. In (b), the grey lines show fits obtained from Refl1D software corresponding to the parameters listed in table SI. The vertical black lines highlight the SL peaks which appear more prominently at the resonant x-ray energies.« less

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Works referenced in this record:

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


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


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


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


    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


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.