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Title: Electric-field-induced spin disorder-to-order transition near a multiferroic triple phase point

Journal Article · · Nature Physics
DOI:https://doi.org/10.1038/NPHYS3902· OSTI ID:1353100
 [1]; ORCiD logo [1];  [1];  [2];  [3];  [4];  [1];  [1];  [1];  [1];  [5];  [6];  [3];  [7]; ORCiD logo [3];  [2];  [6];  [5];  [5];  [8]
  1. Korea Advanced Institute of Science and Technology (KAIST), Daejeon (Republic of Korea)
  2. Univ. of New South Wales, Sydney, NSW (Australia)
  3. Korea Institute of Materials Science (KIMS), Gyeongnam (Republic of Korea)
  4. Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. Pohang Univ. of Science and Technology (POSTECH), Gyeongbuk (Republic of Korea)
  7. POSTECH, Gyeongbuk (Republic of Korea)
  8. Korea Advanced Institute of Science and Technology (KAIST), Daejeon (Republic of Korea); KAIST Institute for the NanoCentury, Daejeon (Republic of Korea)

Here, the emergence of a triple phase point in a two-dimensional parameter space (such as pressure and temperature) can offer unforeseen opportunities for the coupling of two seemingly independent order parameters. On the basis of this, we demonstrate the electric control of magnetic order by manipulating chemical pressure: lanthanum substitution in the antiferromagnetic ferroelectric BiFeO3. Our demonstration relies on the finding that a multiferroic triple phase point of a single spin-disordered phase and two spin-ordered phases emerges near room temperature in Bi0.9La0.1FeO3 ferroelectric thin films. By using spatially resolved X-ray absorption spectroscopy, we provide direct evidence that the electric poling of a particular region of the compound near the triple phase point results in an antiferromagnetic phase while adjacent unpoled regions remain magnetically disordered, opening a promising avenue for magnetoelectric applications at room temperature.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1353100
Journal Information:
Nature Physics, Vol. 13, Issue 2; ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 39 works
Citation information provided by
Web of Science

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Cited By (12)

MOCVD Growth of Perovskite Multiferroic BiFeO 3 Films: The Effect of Doping at the A and/or B Sites on the Structural, Morphological and Ferroelectric Properties journal February 2017
Optimization of multiferroic properties in BiFeO3–BaTiO3-based ceramics by tuning oxygen octahedral distortion journal December 2019
Expansion of the spin cycloid in multiferroic BiFeO3 thin films journal April 2019
Large strain and strain memory effect in bismuth ferrite lead-free ceramics journal January 2017
Controllable defect driven symmetry change and domain structure evolution in BiFeO 3 with enhanced tetragonality journal January 2019
High-resolution angle-resolved lateral piezoresponse force microscopy: Visualization of in-plane piezoresponse vectors journal December 2018
Enhanced pyroelectric properties of Bi 1−x La x FeO 3 thin films journal November 2019
Optimizing the electromechanical response in morphotropic BiFeO 3 journal March 2018
Strain-gradient-induced magnetic anisotropy in straight-stripe mixed-phase bismuth ferrites: Insight into flexomagnetism journal August 2017
Field cycling‐induced evolution of functional properties in bismuth samarium ferrite ceramics journal February 2019
Model-free reconstruction of magnetic correlations in frustrated magnets text January 2018
Model-free reconstruction of magnetic correlations in frustrated magnets text January 2018

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