Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo4O7

Fishman, R. S.; Bordács, S.; Kocsis, V.; Kézsmárki, I.; Viirok, J.; Nagel, U.; Rõõm, T.; Puri, A.; Zeitler, U.; Tokunaga, Y.; Taguchi, Y.; Tokura, Y.

doi:10.1103/PhysRevB.95.024423

Title: Competing exchange interactions in multiferroic and ferrimagnetic ${CaBaCo}_{4} O_{7}$

Abstract

Competing exchange interactions can produce complex magnetic states together with spin-induced electric polarizations. With competing interactions on alternating triangular and kagome layers, the swedenborgite CaBaCo₄O₇ may have one of the largest measured spin-induced polarizations of ~1700 nC/cm² below its ferrimagnetic transition temperature at 70 K. Upon rotating our sample about c = [0,0,1] while the magnetic field is fixed along [1,0,0], the threefold splitting of the spin-wave frequencies indicates that our sample is hexagonally twinned. In addition, magnetization measurements then suggest that roughly 20% of the sample is in a domain with the a axis along [1,0,0] and that 80% of the sample is in one of two other domains with the a axis along either [-1/2,√3/2, 0] or [-1/2, -√3/2, 0] . Powder neutron-diffraction data, magnetization measurements, and terahertz (THz) absorption spectroscopy reveal that the complex spin order in each domain can be described as a triangular array of bitetrahedral c-axis chains ferrimagnetically coupled to each other in the ab plane. In conclusion, the electric-field dependence of bonds coupling those chains produces the large spin-induced polarization of CaBaCo₄O₇ .

Authors:

Fishman, R. S. ^[1]; Bordács, S. ^[2]; Kocsis, V. ^[2]; Kézsmárki, I. ^[2]; Viirok, J. ^[3]; Nagel, U. ^[3]; Rõõm, T. ^[3]; Puri, A. ^[4]; Zeitler, U. ^[4]; Tokunaga, Y. ^[5]; University of Tokyo ^[6]; Taguchi, Y. ^[5]; Tokura, Y. ^[5]; University of Tokyo ^[7]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Budapest University of Technology and Economics and MTA-BME Lendulet Magneto-optical Spectroscopy Research Group (Hungary)
National Institute of Chemical Physics and Biophysics (Estonia)
Radboud University Nijmegen (The Netherlands). High Field Magnet Laboratory (HFML-EMFL)
RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan)
(Japan). Department of Advanced Materials Science
(Japan). Department of Applied Physics

Publication Date:: Mon Jan 23 00:00:00 EST 2017

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

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

OSTI Identifier:: 1341532

Alternate Identifier(s):: OSTI ID: 1341276

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 95; Journal Issue: 2; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE

Citation Formats


                    Fishman, R. S., Bordács, S., Kocsis, V., Kézsmárki, I., Viirok, J., Nagel, U., Rõõm, T., Puri, A., Zeitler, U., Tokunaga, Y., University of Tokyo, Taguchi, Y., Tokura, Y., and University of Tokyo. Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo4O7.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevB.95.024423.

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                    Fishman, R. S., Bordács, S., Kocsis, V., Kézsmárki, I., Viirok, J., Nagel, U., Rõõm, T., Puri, A., Zeitler, U., Tokunaga, Y., University of Tokyo, Taguchi, Y., Tokura, Y., & University of Tokyo. Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo4O7.  United States.  https://doi.org/10.1103/PhysRevB.95.024423

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                    Fishman, R. S., Bordács, S., Kocsis, V., Kézsmárki, I., Viirok, J., Nagel, U., Rõõm, T., Puri, A., Zeitler, U., Tokunaga, Y., University of Tokyo, Taguchi, Y., Tokura, Y., and University of Tokyo. Mon .  
"Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo4O7".  United States.  https://doi.org/10.1103/PhysRevB.95.024423.  https://www.osti.gov/servlets/purl/1341532.

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@article{osti_1341532,

  title        = {Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo4O7},

  author       = {Fishman, R. S. and Bordács, S. and Kocsis, V. and Kézsmárki, I. and Viirok, J. and Nagel, U. and Rõõm, T. and Puri, A. and Zeitler, U. and Tokunaga, Y. and University of Tokyo and Taguchi, Y. and Tokura, Y. and University of Tokyo},

  abstractNote = {Competing exchange interactions can produce complex magnetic states together with spin-induced electric polarizations. With competing interactions on alternating triangular and kagome layers, the swedenborgite CaBaCo4O7 may have one of the largest measured spin-induced polarizations of ~1700 nC/cm2 below its ferrimagnetic transition temperature at 70 K. Upon rotating our sample about c = [0,0,1] while the magnetic field is fixed along [1,0,0], the threefold splitting of the spin-wave frequencies indicates that our sample is hexagonally twinned. In addition, magnetization measurements then suggest that roughly 20% of the sample is in a domain with the a axis along [1,0,0] and that 80% of the sample is in one of two other domains with the a axis along either [-1/2,√3/2, 0] or [-1/2, -√3/2, 0] . Powder neutron-diffraction data, magnetization measurements, and terahertz (THz) absorption spectroscopy reveal that the complex spin order in each domain can be described as a triangular array of bitetrahedral c-axis chains ferrimagnetically coupled to each other in the ab plane. In conclusion, the electric-field dependence of bonds coupling those chains produces the large spin-induced polarization of CaBaCo4O7 .},

  doi          = {10.1103/PhysRevB.95.024423},

  journal      = {Physical Review B},

  number       = 2,

  volume       = 95,

  place        = {United States},

  year         = {Mon Jan 23 00:00:00 EST 2017},

  month        = {Mon Jan 23 00:00:00 EST 2017}

}

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Works referencing / citing this record:

Swedenborgite CaBa(Mn ₂ Fe ₂ )O ₇ with Spin Ordering on a Geometrically Frustrated, Polar, Non-centrosymmetric S = 5/2 Lattice
journal, October 2017

Valldor, Martin; Yadav, Ravi; Hozoi, Liviu
Zeitschrift für anorganische und allgemeine Chemie, Vol. 643, Issue 21
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Title: Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo 4 O 7

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Title: Competing exchange interactions in multiferroic and ferrimagnetic ${CaBaCo}_{4} O_{7}$

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Magnetic Reversal of the Ferroelectric Polarization in a Multiferroic Spinel Oxide
journal, May 2006

Oxygen Stoichiometry in the Geometrically Frustrated Kagomé System YBaCo ₄ O _7+δ : Impact on Phase Behavior and Magnetism
journal, October 2013

Magnetic structure of ${CaBaCo}_{4} O_{7}$ : Lifting of geometrical frustration towards ferrimagnetism
journal, March 2010

${CaBaCo}_{4}$ $O_{7}$ : A ferrimagnetic pyroelectric
journal, July 2014

Spin, charge, and lattice coupling in triangular and Kagomé sublattices of $Co O_{4}$ tetrahedra: $Yb Ba {Co}_{4} O_{7 + δ}$ $(δ = 0, 1)$
journal, October 2006

Spin state and spectroscopic modes of multiferroic BiFeO $_{3}$
journal, April 2013

Electrical and magnetic properties of YBaCo4O7+δ
journal, July 2005

Gigantic magnetic-field-induced polarization and magnetoelectric coupling in a ferrimagnetic oxide CaBaCo $_{4}$ O $_{7}$
journal, November 2013

Magnetoelectric property in 3d transition metal oxide with tetrahedral structure
journal, December 2012

Competing magnetic interactions in the extended Kagomé system $Y Ba {Co}_{4} O_{7}$
journal, November 2006

Magnetoelectric Memory Effect of the Nonpolar Phase with Collinear Spin Structure in Multiferroic ${MnWO}_{4}$
journal, April 2009

Unidirectional terahertz light absorption in the pyroelectric ferrimagnet ${CaBaCo}_{4} O_{7}$
journal, December 2015

Oxygen excess in the “114” cobaltite hexagonal structure: The ferrimagnet CaBaCo4O7.50
journal, September 2011

Structural and magnetic properties of the Kagomé antiferromagnet YbBaCo4O7
journal, April 2006

Electronic and magnetic structure of the mixed-valence cobaltite CaBaCo $_{4}$ O $_{7}$
journal, August 2011

Theory of Magnetoelectric Resonance in Two-Dimensional S = 3/2 Antiferromagnet Ba ₂ CoGe ₂ O ₇ via Spin-Dependent Metal-Ligand Hybridization Mechanism
journal, July 2011

Short-range magnetic ordering in the geometrically frustrated layered compound YBaCo4O7 with an extended Kagomé structure
journal, February 2013

Spin glasses: Experimental facts, theoretical concepts, and open questions
journal, October 1986

Geometrical Frustration in the Ferromagnetic Pyrochlore ${Ho}_{2} {Ti}_{2} O_{7}$
journal, September 1997

Multiferroics: a magnetic twist for ferroelectricity
journal, January 2007

Long-range magnetic interactions in the multiferroic antiferromagnet MnWO $_{4}$
journal, April 2011

High sensitivity of magnetism of the “114” ferrimagnet CaBaCo4O7 to stoichiometry deviation
journal, January 2014

The structure of the new compound YBaCo4O7 with a magnetic feature
journal, June 2002

Primary crystallization fields, growth features and properties of rare earth and barium-based cobaltates
journal, February 2005

Orthorhombic kagome cobaltite CaBaCo4O7: A new ferrimagnet with a of 70 K
journal, March 2009

Dramatic effect of A-site substitution upon the structure and magnetism of the “114” CaBaCo $_{4}$ O $_{7}$ cobaltite
journal, November 2012

Disordered magnetism in the homologue series YBaCo _{4− x} Zn _x O ₇ ( x = 0, 1, 2, 3)
journal, December 2004

Multiferroics: Different ways to combine magnetism and ferroelectricity
journal, November 2006

High-temperature transport and electrochemical properties of YBaCo4O7+δ
journal, December 2004

Magnetic properties of the ferrimagnetic cobaltite CaBaCo4O7
journal, July 2011

Magnetic Form Factor of ${Co}^{+ +}$ Ion in Cobaltous Oxide
journal, March 1970

Syntheses and structures of compounds with YBaCo4O7-type structure
journal, March 2004

Swedenborgite CaBa(Mn ₂ Fe ₂ )O ₇ with Spin Ordering on a Geometrically Frustrated, Polar, Non-centrosymmetric S = 5/2 Lattice
journal, October 2017