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Title: Competing exchange interactions in multiferroic and ferrimagnetic CaBaCo 4 O 7

Journal Article · · Physical Review B
 [1];  [2];  [2];  [2];  [3];  [3];  [3];  [4];  [4];  [5];  [5];  [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  2. Budapest University of Technology and Economics and MTA-BME Lendulet Magneto-optical Spectroscopy Research Group (Hungary)
  3. National Institute of Chemical Physics and Biophysics (Estonia)
  4. Radboud University Nijmegen (The Netherlands). High Field Magnet Laboratory (HFML-EMFL)
  5. RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan)

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 .

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1341532
Alternate ID(s):
OSTI ID: 1341276
Journal Information:
Physical Review B, Vol. 95, Issue 2; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

References (41)

Spin-ordering and magnetoelastic coupling in the extended kagome system YBaCo 4 O 7 journal March 2011
Giant Spin-Driven Ferroelectric Polarization in BiFeO 3 at Room Temperature journal November 2015
The “114” Cobaltites and Ferrites: New Routes to Ferrimagnetism and Magnetic Frustration journal October 2009
Superexchange Coupling and Spin Susceptibility Spectral Weight in Undoped Monolayer Cuprates journal December 1997
Electromagnons in the Spin Collinear State of a Triangular Lattice Antiferromagnet journal August 2010
Magnetoelectric effect and magnetic phase diagram of a polar ferrimagnet CaBaFe 4 O 7 journal January 2016
Skyrmion Lattice in a Chiral Magnet journal February 2009
Electromagnons in Multiferroic YMn 2 O 5 and TbMn 2 O 5 journal January 2007
Domain rearrangement and spin-spiral-plane flop as sources of magnetoelectric effects in delafossite CuCrO 2 journal March 2010
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

Cited By (1)

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

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