Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO3

Yoon, Sangmoon; Gao, Xiang; Ok, Jong Mok; Liao, Zhaoliang; Han, Myung-Geun; Zhu, Yimei; Ganesh, Panchapakesan; Chisholm, Matthew F.; Choi, Woo Seok; Lee, Ho Nyung

doi:10.1021/acs.nanolett.1c00756

Title: Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO₃

Abstract

The origin of strain-induced ferromagnetism, which is robust regardless of the type and degree of strain in LaCoO3 (LCO) thin films, is enigmatic despite intensive research efforts over the past decade. Here, by combining scanning transmission electron microscopy with ab initio density functional theory plus U calculations, we report that the ferromagnetism does not emerge directly from the strain itself but rather from the creation of compressed structural units within ferroelastically formed twin-wall domains. The compressed structural units are magnetically active with the rocksalt-type high-spin/low-spin order. Our study highlights that the ferroelastic nature of ferromagnetic structural units is important for understanding the intriguing ferromagnetic properties in LCO thin films.

Authors:

Yoon, Sangmoon ^[1]; Gao, Xiang ^[1];

^[1]; Liao, Zhaoliang ^[1];

^[2];

^[1];

^[3];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sungkyunkwan Univ., Suwon (Korea)

Publication Date:: Fri Apr 30 00:00:00 EDT 2021

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

OSTI Identifier:: 1798486

Alternate Identifier(s):: OSTI ID: 1817600

Report Number(s):: BNL-221687-2021-JAAM
Journal ID: ISSN 1530-6984; TRN: US2210681

Grant/Contract Number:: SC0012704; AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Nano Letters

Additional Journal Information:: Journal Volume: 21; Journal Issue: 9; Journal ID: ISSN 1530-6984

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Epitaxial thin film; Complex oxides; Ferromagnetism; Electron microscopy; Thin films; Layers; Lattices; Magnetic properties; Epitaxy

Citation Formats


                    Yoon, Sangmoon, Gao, Xiang, Ok, Jong Mok, Liao, Zhaoliang, Han, Myung-Geun, Zhu, Yimei, Ganesh, Panchapakesan, Chisholm, Matthew F., Choi, Woo Seok, and Lee, Ho Nyung. Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO3.  United States: N. p., 2021. 
Web.  doi:10.1021/acs.nanolett.1c00756.

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                    Yoon, Sangmoon, Gao, Xiang, Ok, Jong Mok, Liao, Zhaoliang, Han, Myung-Geun, Zhu, Yimei, Ganesh, Panchapakesan, Chisholm, Matthew F., Choi, Woo Seok, & Lee, Ho Nyung. Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO3.  United States.  https://doi.org/10.1021/acs.nanolett.1c00756

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                    Yoon, Sangmoon, Gao, Xiang, Ok, Jong Mok, Liao, Zhaoliang, Han, Myung-Geun, Zhu, Yimei, Ganesh, Panchapakesan, Chisholm, Matthew F., Choi, Woo Seok, and Lee, Ho Nyung. Fri .  
"Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO3".  United States.  https://doi.org/10.1021/acs.nanolett.1c00756.  https://www.osti.gov/servlets/purl/1798486.

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@article{osti_1798486,

  title        = {Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO3},

  author       = {Yoon, Sangmoon and Gao, Xiang and Ok, Jong Mok and Liao, Zhaoliang and Han, Myung-Geun and Zhu, Yimei and Ganesh, Panchapakesan and Chisholm, Matthew F. and Choi, Woo Seok and Lee, Ho Nyung},

  abstractNote = {The origin of strain-induced ferromagnetism, which is robust regardless of the type and degree of strain in LaCoO3 (LCO) thin films, is enigmatic despite intensive research efforts over the past decade. Here, by combining scanning transmission electron microscopy with ab initio density functional theory plus U calculations, we report that the ferromagnetism does not emerge directly from the strain itself but rather from the creation of compressed structural units within ferroelastically formed twin-wall domains. The compressed structural units are magnetically active with the rocksalt-type high-spin/low-spin order. Our study highlights that the ferroelastic nature of ferromagnetic structural units is important for understanding the intriguing ferromagnetic properties in LCO thin films.},

  doi          = {10.1021/acs.nanolett.1c00756},

  journal      = {Nano Letters},

  number       = 9,

  volume       = 21,

  place        = {United States},

  year         = {Fri Apr 30 00:00:00 EDT 2021},

  month        = {Fri Apr 30 00:00:00 EDT 2021}

}

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Works referenced in this record:

Stress-Strain Behavior During Compression of Polycrystalline La1-xCaxCoO3 Ceramics
journal, March 2005

Faaland, Sonia; Grande, Tor; Einarsrud, Mari-Ann
Journal of the American Ceramic Society, Vol. 88, Issue 3
DOI: 10.1111/j.1551-2916.2005.00165.x

Reversal of the Lattice Structure in ${SrCoO}_{x}$ Epitaxial Thin Films Studied by Real-Time Optical Spectroscopy and First-Principles Calculations
journal, August 2013

Choi, Woo Seok; Jeen, Hyoungjeen; Lee, Jun Hee
Physical Review Letters, Vol. 111, Issue 9
DOI: 10.1103/PhysRevLett.111.097401

Correlation between magnetism and “dark stripes” in strained La _1−x Sr _x CoO ₃ epitaxial films (0 ≤ x ≤ 0.1)
journal, December 2015

Lan, Q. Q.; Shen, X.; Yang, H. W.
Applied Physics Letters, Vol. 107, Issue 24
DOI: 10.1063/1.4937562

Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge
journal, August 2013

Jeen, Hyoungjeen; Choi, Woo Seok; Biegalski, Michael D.
Nature Materials, Vol. 12, Issue 11
DOI: 10.1038/nmat3736

Ferroelastic Behavior of LaCoO3-Based Ceramics
journal, September 2001

Kleveland, Kjersti; Orlovskaya, Nina; Grande, Tor
Journal of the American Ceramic Society, Vol. 84, Issue 9
DOI: 10.1111/j.1151-2916.2001.tb00953.x

Temperature- and pressure-driven spin-state transitions in ${LaCoO}_{3}$
journal, February 2007

Kozlenko, D. P.; Golosova, N. O.; Jirák, Z.
Physical Review B, Vol. 75, Issue 6
DOI: 10.1103/PhysRevB.75.064422

Structure and Properties of Functional Oxide Thin Films: Insights From Electronic-Structure Calculations
journal, July 2011

Rondinelli, James M.; Spaldin, Nicola A.
Advanced Materials, Vol. 23, Issue 30
DOI: 10.1002/adma.201101152

Oxygen Vacancy Ordering Modulation of Magnetic Anisotropy in Strained LaCoO _{3– x} Thin Films
journal, October 2018

Zhang, Ningbin; Zhu, Yinlian; Li, Da
ACS Applied Materials & Interfaces, Vol. 10, Issue 44
DOI: 10.1021/acsami.8b13674

Dimensionality Controlled Octahedral Symmetry-Mismatch and Functionalities in Epitaxial LaCoO ₃ /SrTiO ₃ Heterostructures
journal, June 2015

Qiao, Liang; Jang, Jae Hyuck; Singh, David J.
Nano Letters, Vol. 15, Issue 7
DOI: 10.1021/acs.nanolett.5b01471

Nanoscale Spin-State Ordering in LaCoO ₃ Epitaxial Thin Films
journal, April 2014

Kwon, Ji-Hwan; Choi, Woo Seok; Kwon, Young-Kyun
Chemistry of Materials, Vol. 26, Issue 8
DOI: 10.1021/cm5003115

Strain-sensitive spin-state ordering in thin films of perovskite ${LaCoO}_{3}$
journal, November 2015

Fujioka, J.; Yamasaki, Y.; Doi, A.
Physical Review B, Vol. 92, Issue 19
DOI: 10.1103/PhysRevB.92.195115

Monoclinic Ferroelastic Domains in LaCoO3-Based Perovskites
journal, December 2007

Vullum, P. E.; Holmestad, R.; Lein, H. L.
Advanced Materials, Vol. 19, Issue 24
DOI: 10.1002/adma.200700021

Ferroelasticity
journal, September 1984

Wadhawan, V. K.
Bulletin of Materials Science, Vol. 6, Issue 4
DOI: 10.1007/BF02744001

TEM observations of rhombohedral and monoclinic domains in LaCoO ₃ -based ceramics
journal, March 2008

Vullum, P. E.; Lein, H. L.; Einarsrud, M. -A.
Philosophical Magazine, Vol. 88, Issue 8
DOI: 10.1080/14786430802082016

Strain-induced high-temperature perovskite ferromagnetic insulator
journal, March 2018

Meng, Dechao; Guo, Hongli; Cui, Zhangzhang
Proceedings of the National Academy of Sciences, Vol. 115, Issue 12
DOI: 10.1073/pnas.1707817115

Strain control of oxygen kinetics in the Ruddlesden-Popper oxide La1.85Sr0.15CuO4
journal, January 2018

Meyer, Tricia L.; Jacobs, Ryan; Lee, Dongkyu
Nature Communications, Vol. 9, Issue 1
DOI: 10.1038/s41467-017-02568-z

Spin state transition and covalent bonding in LaCoO $_{3}$
journal, November 2012

Křápek, V.; Novák, P.; Kuneš, J.
Physical Review B, Vol. 86, Issue 19
DOI: 10.1103/PhysRevB.86.195104

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

Pinta, C.; Fuchs, D.; Merz, M.
Physical Review B, Vol. 78, Issue 17
DOI: 10.1103/PhysRevB.78.174402

Tuning the magnetic properties of $La Co O_{3}$ thin films by epitaxial strain
journal, January 2008

Fuchs, D.; Arac, E.; Pinta, C.
Physical Review B, Vol. 77, Issue 1
DOI: 10.1103/PhysRevB.77.014434

Ferromagnetism and Charge Order from a Frozen Electron Configuration in Strained Epitaxial ${LaCoO}_{3}$
journal, May 2018

Sterbinsky, G. E.; Nanguneri, R.; Ma, J. X.
Physical Review Letters, Vol. 120, Issue 19
DOI: 10.1103/PhysRevLett.120.197201

Phase transitions in ferroelastic and co-elastic crystals
journal, April 1990

Salje, E.
Ferroelectrics, Vol. 104, Issue 1
DOI: 10.1080/00150199008223816

High‐Pressure Neutron Diffraction Study of LaCoO ₃
journal, January 2019

Capone, Mara; Ridley, Christopher J.; Funnell, Nicholas P.
physica status solidi (a), Vol. 216, Issue 6
DOI: 10.1002/pssa.201800736

Thermally induced insulator-metal transition in ${LaCoO}_{3} :$ A view based on the Mott transition
journal, July 1998

Tokura, Y.; Okimoto, Y.; Yamaguchi, S.
Physical Review B, Vol. 58, Issue 4
DOI: 10.1103/PhysRevB.58.R1699

Calculation of critical layer thickness versus lattice mismatch for Ge _x Si _{1− x} /Si strained‐layer heterostructures
journal, August 1985

People, R.; Bean, J. C.
Applied Physics Letters, Vol. 47, Issue 3
DOI: 10.1063/1.96206

Suppressed Dependence of Polarization on Epitaxial Strain in Highly Polar Ferroelectrics
journal, May 2007

Lee, Ho Nyung; Nakhmanson, Serge M.; Chisholm, Matthew F.
Physical Review Letters, Vol. 98, Issue 21
DOI: 10.1103/PhysRevLett.98.217602

Oxygen Diode Formed in Nickelate Heterostructures by Chemical Potential Mismatch
journal, March 2018

Guo, Er-Jia; Liu, Yaohua; Sohn, Changhee
Advanced Materials, Vol. 30, Issue 15
DOI: 10.1002/adma.201705904

Spin-Orbital Superstructure in Strained Ferrimagnetic Perovskite Cobalt Oxide
journal, July 2013

Fujioka, J.; Yamasaki, Y.; Nakao, H.
Physical Review Letters, Vol. 111, Issue 2
DOI: 10.1103/PhysRevLett.111.027206

Strain-induced majority carrier inversion in ferromagnetic epitaxial $LaCo O_{3 - δ}$ thin films
journal, March 2020

Chaturvedi, Vipul; Walter, Jeff; Paul, Arpita
Physical Review Materials, Vol. 4, Issue 3
DOI: 10.1103/PhysRevMaterials.4.034403

Pressure-induced intermediate-to-low spin state transition in ${LaCoO}_{3}$
journal, April 2003

Vogt, T.; Hriljac, J. A.; Hyatt, N. C.
Physical Review B, Vol. 67, Issue 14
DOI: 10.1103/PhysRevB.67.140401

Long-range ferromagnetic order in ${LaCoO}_{3 - δ}$ epitaxial films due to the interplay of epitaxial strain and oxygen vacancy ordering
journal, April 2015

Mehta, V. V.; Biskup, N.; Jenkins, C.
Physical Review B, Vol. 91, Issue 14
DOI: 10.1103/PhysRevB.91.144418

Structural and Magnetic Properties of LaCoO ₃ /SrTiO ₃ Multilayers
journal, July 2016

Zhang, Hongrui; Zhang, Jing; Yang, Huaiwen
ACS Applied Materials & Interfaces, Vol. 8, Issue 28
DOI: 10.1021/acsami.6b03756

Ferromagnetic order in epitaxially strained $La Co O_{3}$ thin films
journal, April 2007

Fuchs, D.; Pinta, C.; Schwarz, T.
Physical Review B, Vol. 75, Issue 14
DOI: 10.1103/PhysRevB.75.144402

Valence-state reflectometry of complex oxide heterointerfaces
journal, September 2016

Hamann-Borrero, Jorge E.; Macke, Sebastian; Choi, Woo Seok
npj Quantum Materials, Vol. 1, Issue 1
DOI: 10.1038/npjquantmats.2016.13

Strain-Induced Spin States in Atomically Ordered Cobaltites
journal, January 2012

Choi, Woo Seok; Kwon, Ji-Hwan; Jeen, Hyoungjeen
Nano Letters, Vol. 12, Issue 9
DOI: 10.1021/nl302562f

Room‐Temperature Ferromagnetic Insulating State in Cation‐Ordered Double‐Perovskite Sr ₂ Fe ₁₊ _x Re ₁₋ _x O ₆ Films
journal, November 2018

Sohn, Changhee; Skoropata, Elizabeth; Choi, Yongseong
Advanced Materials, Vol. 31, Issue 4
DOI: 10.1002/adma.201805389

Exploiting Symmetry Mismatch to Control Magnetism in a Ferroelastic Heterostructure
journal, May 2019

Guo, Er-Jia; Desautels, Ryan; Lee, Dongkyu
Physical Review Letters, Vol. 122, Issue 18
DOI: 10.1103/PhysRevLett.122.187202

Nanoscale ferroelastic twins formed in strained LaCoO ₃ films
journal, March 2019

Guo, Er-Jia; Desautels, Ryan; Keavney, David
Science Advances, Vol. 5, Issue 3
DOI: 10.1126/sciadv.aav5050

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Title: Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO3

Abstract

Citation Formats

Stress-Strain Behavior During Compression of Polycrystalline La1-xCaxCoO3 Ceramics journal, March 2005

Reversal of the Lattice Structure in SrCoO x Epitaxial Thin Films Studied by Real-Time Optical Spectroscopy and First-Principles Calculations journal, August 2013

Correlation between magnetism and “dark stripes” in strained La 1−x Sr x CoO 3 epitaxial films (0 ≤ x ≤ 0.1) journal, December 2015

Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge journal, August 2013

Ferroelastic Behavior of LaCoO3-Based Ceramics journal, September 2001

Temperature- and pressure-driven spin-state transitions in LaCoO 3 journal, February 2007

Structure and Properties of Functional Oxide Thin Films: Insights From Electronic-Structure Calculations journal, July 2011

Oxygen Vacancy Ordering Modulation of Magnetic Anisotropy in Strained LaCoO 3– x Thin Films journal, October 2018

Dimensionality Controlled Octahedral Symmetry-Mismatch and Functionalities in Epitaxial LaCoO 3 /SrTiO 3 Heterostructures journal, June 2015

Nanoscale Spin-State Ordering in LaCoO 3 Epitaxial Thin Films journal, April 2014

Strain-sensitive spin-state ordering in thin films of perovskite LaCoO 3 journal, November 2015

Monoclinic Ferroelastic Domains in LaCoO3-Based Perovskites journal, December 2007

Ferroelasticity journal, September 1984

TEM observations of rhombohedral and monoclinic domains in LaCoO 3 -based ceramics journal, March 2008

Strain-induced high-temperature perovskite ferromagnetic insulator journal, March 2018

Strain control of oxygen kinetics in the Ruddlesden-Popper oxide La1.85Sr0.15CuO4 journal, January 2018

Spin state transition and covalent bonding in LaCoO 3 journal, November 2012

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

Tuning the magnetic properties of La Co O 3 thin films by epitaxial strain journal, January 2008

Ferromagnetism and Charge Order from a Frozen Electron Configuration in Strained Epitaxial LaCoO 3 journal, May 2018

Phase transitions in ferroelastic and co-elastic crystals journal, April 1990

High‐Pressure Neutron Diffraction Study of LaCoO 3 journal, January 2019

Thermally induced insulator-metal transition in LaCoO 3 : A view based on the Mott transition journal, July 1998

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Suppressed Dependence of Polarization on Epitaxial Strain in Highly Polar Ferroelectrics journal, May 2007

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Spin-Orbital Superstructure in Strained Ferrimagnetic Perovskite Cobalt Oxide journal, July 2013

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Valence-state reflectometry of complex oxide heterointerfaces journal, September 2016

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Title: Strain-Induced Atomic-Scale Building Blocks for Ferromagnetism in Epitaxial LaCoO₃

Stress-Strain Behavior During Compression of Polycrystalline La1-xCaxCoO3 Ceramics
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Reversal of the Lattice Structure in ${SrCoO}_{x}$ Epitaxial Thin Films Studied by Real-Time Optical Spectroscopy and First-Principles Calculations
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Ferroelastic Behavior of LaCoO3-Based Ceramics
journal, September 2001

Temperature- and pressure-driven spin-state transitions in ${LaCoO}_{3}$
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Structure and Properties of Functional Oxide Thin Films: Insights From Electronic-Structure Calculations
journal, July 2011

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journal, October 2018

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journal, November 2015

Monoclinic Ferroelastic Domains in LaCoO3-Based Perovskites
journal, December 2007

Ferroelasticity
journal, September 1984

TEM observations of rhombohedral and monoclinic domains in LaCoO ₃ -based ceramics
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Strain-induced high-temperature perovskite ferromagnetic insulator
journal, March 2018

Strain control of oxygen kinetics in the Ruddlesden-Popper oxide La1.85Sr0.15CuO4
journal, January 2018

Spin state transition and covalent bonding in LaCoO $_{3}$
journal, November 2012

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

Tuning the magnetic properties of $La Co O_{3}$ thin films by epitaxial strain
journal, January 2008

Ferromagnetism and Charge Order from a Frozen Electron Configuration in Strained Epitaxial ${LaCoO}_{3}$
journal, May 2018

Phase transitions in ferroelastic and co-elastic crystals
journal, April 1990

High‐Pressure Neutron Diffraction Study of LaCoO ₃
journal, January 2019

Thermally induced insulator-metal transition in ${LaCoO}_{3} :$ A view based on the Mott transition
journal, July 1998

Calculation of critical layer thickness versus lattice mismatch for Ge _x Si _{1− x} /Si strained‐layer heterostructures
journal, August 1985

Suppressed Dependence of Polarization on Epitaxial Strain in Highly Polar Ferroelectrics
journal, May 2007

Oxygen Diode Formed in Nickelate Heterostructures by Chemical Potential Mismatch
journal, March 2018

Spin-Orbital Superstructure in Strained Ferrimagnetic Perovskite Cobalt Oxide
journal, July 2013

Strain-induced majority carrier inversion in ferromagnetic epitaxial $LaCo O_{3 - δ}$ thin films
journal, March 2020

Pressure-induced intermediate-to-low spin state transition in ${LaCoO}_{3}$
journal, April 2003

Long-range ferromagnetic order in ${LaCoO}_{3 - δ}$ epitaxial films due to the interplay of epitaxial strain and oxygen vacancy ordering
journal, April 2015

Structural and Magnetic Properties of LaCoO ₃ /SrTiO ₃ Multilayers
journal, July 2016

Ferromagnetic order in epitaxially strained $La Co O_{3}$ thin films
journal, April 2007

Valence-state reflectometry of complex oxide heterointerfaces
journal, September 2016

Strain-Induced Spin States in Atomically Ordered Cobaltites
journal, January 2012

Room‐Temperature Ferromagnetic Insulating State in Cation‐Ordered Double‐Perovskite Sr ₂ Fe ₁₊ _x Re ₁₋ _x O ₆ Films
journal, November 2018

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