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Title: Magnetization dynamics and frustration in the multiferroic double perovskite Lu2MnCoO6

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [4];  [4];  [5];  [6];  [6];  [1];  [7];  [8];  [8]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  3. Univ. of Birmingham, Edgbaston (United Kingdom)
  4. Goethe Univ., Frankfurt (Germany)
  5. Durham Univ., Durham (United Kingdom)
  6. Oxford Univ., Oxford (United Kingdom)
  7. Univ. de Santiago de Compostela, Santiago de Compostela (Spain)
  8. Dpt. Quimica Fundamental U. Coruna (Spain); ETH Zurich, Zurich (Switzerland)

Here, we investigate the magnetic ordering and the magnetization dynamics (from kHz to THz time scales) of the double perovskite Lu2MnCoO6 using elastic neutron diffraction, muon spin relaxation, and micro-Hall magnetization measurements. This compound is known to be a type II multiferroic with the interesting feature that a ferromagneticlike magnetization hysteresis loop couples to an equally hysteretic electric polarization in the bulk of the material despite a zero-field magnetic ordering of the type ↑↑↓↓ along Co-Mn spin chains. Here we explore the unusual dynamics of this compound and find extremely strong fluctuations, consistent with the axial next-nearest-neighbor Ising (ANNNI) model for frustrated spin chains. We identify three temperature scales in Lu2MnCoO6 corresponding to the onset of highly fluctuating long-range order below TN = 50±3 K identified from neutron scattering, the onset of magnetic and electric hysteresis, with change in kHz magnetic and electric dynamics below a 30 K temperature scale, and partial freezing of ~MHz spin fluctuations in the muon spin relaxation data below 12 ± 3 K. Our results provide a framework for understanding the multiferroic behavior of this compound and its hysteresis and dynamics.

Research Organization:
Ames Lab., Ames, IA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Ames Lab. and Iowa State Univ., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); State of Florida (United States); Ministry of Economy and Competitiveness (MINECO) (Spain); European Union (EU)
Contributing Organization:
Univ. of Birmingham, Edgbaston (United Kingdom); Goethe Univ., Frankfurt (Germany); Durham Univ. (United Kingdom); Oxford Univ. (United Kingdom); Univ. of Santiago de Compostela (Spain); Univ. of Coruna (Spain)
Grant/Contract Number:
DMR-1157490; AC02-07CH11358; MAT2010-21342-C02
OSTI ID:
1259552
Alternate ID(s):
OSTI ID: 1250192; OSTI ID: 1325626
Report Number(s):
IS-J-9015; LA-UR-14-28762; PRBMDO
Journal Information:
Physical Review B, Vol. 93, Issue 13; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

References (25)

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Multiferroicity with coexisting isotropic and anisotropic spins in Ca 3 Co 2 x Mn x O 6 journal February 2014
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Magnetization dynamics of a CrO2 grain studied by micro-Hall magnetometry journal July 2010
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Quasi-one-dimensional miniature multiferroic magnetic field sensor with high sensitivity at zero bias field journal July 2011
Incommensurate Magnetic Structure and Its Long-Time Variation in a Geometrically Frustrated Magnet Ca 3 Co 2 O 6 journal March 2011
The ANNNI model — Theoretical analysis and experimental application journal November 1988
Spin freezing and dynamics in Ca 3 Co 2 x Mn x O 6 ( x 0.95 ) investigated with implanted muons: Disorder in the anisotropic next-nearest-neighbor Ising model journal July 2009
Multiferroic magnetoelectric composites: Historical perspective, status, and future directions journal February 2008
Incommensurate magnetic ground state revealed by resonant x-ray scattering in the frustrated spin system Ca 3 Co 2 O 6 journal April 2008
Formation of Magnetic Microphases in Ca 3 Co 2 O 6 journal August 2012
Multiferroic and magnetoelectric materials journal August 2006
Multiferroic behavior in the double-perovskite Lu 2 MnCoO 6 journal October 2011
Muon data for "Magnetization dynamics and frustration in the multiferroic double perovskite Lu2MnCoO6"
  • Lancaster, Tom; Möller, J.S.; Blundell, S.J.
  • Durham University-Supplementary information for journal article at DOI: 10.1103/PhysRevB.93.134431 , 1 x-gzip file https://doi.org/10.15128/qj72p712h
dataset April 2016
Multiferroic and Magnetoelectric Materials journal October 2006
Strong ferromagnetic-dielectric coupling in multiferroic Lu2CoMnO6 single crystals text January 2014

Cited By (3)

Interplay between single-ion magnetism, single-chain magnetism and long-range ordering in the spin chain oxides Sr 4−x Ca x Mn 2 CoO 9 journal January 2018
Absence of ferroelectricity in double-perovskite Y 2 CoMnO 6 single crystals journal August 2019
Temperature dependence of magnetic excitations in the frustrated antiferromagnetic spinel ZnMn 2 O 4 journal January 2018

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