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Title: Electric control of magnetism at the Fe/BaTiO3 interface

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms4404· OSTI ID:1162064
 [1];  [1];  [2];  [3];  [4];  [5];  [1];  [1];  [6];  [4];  [7];  [8];  [6];  [1]
  1. Politecnico di Milano, Como (Italy)
  2. National Research Council (CNR), L'Aquila (Italy)
  3. Inst. of Barcelona (ICMAB-CSIC), Catalonia (Spain)
  4. Consiglio Nazionale delle Ricerche (CNR - IOM), Trieste (Italy)
  5. Consiglio Nazionale delle Ricerche (CNR - IOM), Trieste (Italy); Univ. Federale do Rio de Janeiro, Rio de Janeiro (Brazil)
  6. Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Catalonia (Spain)
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. Complutense de Madrid, Madrid (Spain)
  8. Consiglio Nazionale delle Ricerche (CNR - SPIN), L'Aquila (Italy)

Interfacial magnetoelectric coupling (MEC) is a viable path to achieve electrical writing of magnetic information in spintronic devices. For the prototypical Fe/BaTiO3 (BTO) system, only tiny changes of the interfacial Fe magnetic moment upon reversal of the BTO dielectric polarization have been predicted so far. Here, by using X-ray magnetic circular dichroism in combination with high resolution electron microscopy and first principles calculations, we report on an undisclosed physical mechanism for interfacial MEC in the Fe/BTO system. At the Fe/BTO interface, an ultrathin FeOx layer exists, whose magnetization can be electrically and reversibly switched on-off at room-temperature by reversing the BTO polarization. The suppression / recovery of interfacial ferromagnetism results from the asymmetric effect that ionic displacements in BTO produces on the exchange coupling constants in the adjacent FeOx layer. The observed giant magnetoelectric response holds potential for optimizing interfacial MEC in view of efficient, low-power spintronic devices.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1162064
Journal Information:
Nature Communications, Vol. 5; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 153 works
Citation information provided by
Web of Science

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Electric Field Control of the Magnetocaloric Effect journal December 2014
Polarization-Mediated Thermal Stability of Metal/Oxide Heterointerface journal September 2015
Multiferroic Heterostructures Integrating Ferroelectric and Magnetic Materials journal November 2015
Synergies of Electrochemical Metallization and Valance Change in All-Inorganic Perovskite Quantum Dots for Resistive Switching journal May 2018
Electric Field Induced Room Temperature Null to High Spin State Switching: A Computational Prediction journal February 2019
Electric-Field Control of Magnetic Order: From FeRh to Topological Antiferromagnetic Spintronics journal November 2018
Reversible Modification of Ferromagnetism through Electrically Controlled Morphology journal April 2019
Tunable Magnetism in Nanoporous CuNi Alloys by Reversible Voltage-Driven Element-Selective Redox Processes journal April 2018
Deterministic switching of ferromagnetism at room temperature using an electric field journal December 2014
Control of magnetism by electric fields journal March 2015
Understanding and designing magnetoelectric heterostructures guided by computation: progresses, remaining questions, and perspectives journal May 2017
Observation of Skyrmions at Room Temperature in Co2FeAl Heusler Alloy Ultrathin Film Heterostructures journal January 2019
Four-state ferroelectric spin-valve journal May 2015
Electric field mediated non-volatile tuning magnetism at the single-crystalline Fe/Pb(Mg 1/3 Nb 2/3 ) 0.7 Ti 0.3 O 3 interface journal January 2015
Electric field control of resistive switching and magnetization in epitaxial LaBaCo 2 O 5+δ thin films journal January 2019
Ferroelectric or non-ferroelectric: Why so many materials exhibit “ferroelectricity” on the nanoscale journal June 2017
Study of magneto-electric coupling between ultra-thin Fe films and PMN-PT using X-ray magnetic circular dichroism journal February 2018
Evidence for a surface anomaly during the cubic-tetragonal phase transition in BaTiO 3 (001) journal July 2018
Atomic-scale mapping of interface reconstructions in multiferroic heterostructures journal December 2018
First-principles study of interfacial magnetoelectric coupling in Fe 3 Ga/BaTiO 3 /Fe 3 Ga heterostructure journal May 2019
Reversibly controlled magnetic domains of Co film via electric field driven oxygen migration at nanoscale journal June 2019
Magnetic anisotropy switching induced by shape memory effect in NiTi/Ni bilayer journal November 2019
Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology journal November 2015
Loss of spin polarization in ferromagnet/ferroelectric tunnel junctions due to screening effects journal October 2018
Perpendicular magnetic anisotropy and its electric-field-induced change at metal-dielectric interfaces journal November 2018
Perpendicular magnetic anisotropy modulated by interfacial magnetoelectric coupling in Fe 4 N/0.75Pb(Mg 1/3 Nb 2/3 )O 3 -0.25PbTiO 3 multiferroic heterostructures journal June 2019
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Charge-Transfer-Induced Interfacial Exchange Coupling at the Co / Bi Fe O 3 Interface journal October 2019
Influence of hole depletion and depolarizing field on the BaTiO 3 / La 0.6 Sr 0.4 MnO 3 interface electronic structure revealed by photoelectron spectroscopy and first-principles calculations journal December 2015
Magnetoelectroelastic control of magnetism in an artificial multiferroic journal July 2016
Scaled effective on-site Coulomb interaction in the DFT+ U method for correlated materials journal January 2018
Electrically reversible magnetization at the antiperovskite/perovskite interface journal February 2019
Materials, Devices and Spin Transfer Torque in Antiferromagnetic Spintronics: A Concise Review journal September 2017
Recent Progress in the Voltage-Controlled Magnetic Anisotropy Effect and the Challenges Faced in Developing Voltage-Torque MRAM journal May 2019
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