Electric Field Induced Room Temperature Null to High Spin State Switching: A Computational Prediction

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abstract

BaTiO3 is a well-known ferroelectric material, with an electric field-induced coupled electrical/structural transition from a cubic to a tetragonal lattice above room temperature. Via DFT calculations, the magnetic properties of an Fe monolayer sandwiched between bulk-like BaTiO3 are explored, showing how the magnetic moment of each Fe atom is switched from a null spin to a high spin (2 mu(B) per Fe) state when the BaTiO3 structure changes from cubic to tetragonal. This effect occurs in an optimized range of interatomic distances at the interface, allowing the design of an above-room temperature binary, electric field write/magnetic read device.

keywords

ENTANGLEMENT; POLARIZATION; ORDER

subject category

Science & Technology - Other Topics

authors

Amorim, CO; Amaral, JS; Goncalves, JN; Amaral, VS

our authors

foto Carlos Amorim

Carlos Amorim

Assistant Researcher
foto João Cunha de Sequeira Amaral

João Cunha de Sequeira Amaral

Assistant Researcher
foto João Nuno Santos Gonçalves

João Nuno Santos Gonçalves

Junior Researcher
foto Vitor Brás Sequeira Amaral

Vitor Brás Sequeira Amaral

Full professor

Groups

G2 - Photonic, Electronic and Magnetic Materials
G6 - Virtual Materials and Artificial Intelligence

Projects

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)

Projeto de Investigação Exploratória: João Amaral (IF/01089/2015)

acknowledgements

This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. FCT is also acknowledged for grants SFRH/BD/93336/2013 (C.O.A.), SFRH/BPD/82059/2011 (J.N.G.), and IF/01089/2015 (J.S.A.).

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Publication Details

type
Journal Article
year
2019
journal
ADVANCED THEORY AND SIMULATIONS
volume
2
article number
1900005
publisher
WILEY-V C H VERLAG GMBH
isbn
2513-0390
issue
4
digital object identifier
10.1002/adts.201900005
web of science article identifier
WOS:000463986600019

Journal Metrics (JCR 2019)

Journal Impact Factor
2.951
Journal Impact Factor (5 yrs)
2.951
category normalized journal percentile
66.901

Citations

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