Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}

T. Varga; A. Kumar; E. Vlahos; S. Denev; M. Park; S. Hong; T. Sanehira; Y. Wang; C. J. Fennie; S. K. Streiffer; X. Ke; P. Schiffer; V. Gopalan; J. F. Mitchell

doi:10.1103/PhysRevLett.103.047601

Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}

T. Varga, A. Kumar, E. Vlahos, S. Denev, M. Park, S. Hong, T. Sanehira, Y. Wang, C. J. Fennie, S. K. Streiffer, X. Ke, P. Schiffer, V. Gopalan, J. F. Mitchell

School of Mathematics and Physics

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Abstract

We report the magnetic and electrical characteristics of polycrystalline FeTiO3 synthesized at high pressure that is isostructural with acentric LiNbO3 (LBO). Piezoresponse force microscopy, optical second harmonic generation, and magnetometry demonstrate ferroelectricity at and below room temperature and weak ferromagnetism below ~120??K. These results validate symmetry-based criteria and first-principles calculations of the coexistence of ferroelectricity and weak ferromagnetism in a series of transition metal titanates crystallizing in the LBO structure.

Original language	English
Pages (from-to)	47601
Number of pages	1
Journal	Physical Review Letters
Volume	103
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.103.047601
Publication status	Published - 24 Jul 2009

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10.1103/PhysRevLett.103.047601

Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO3-Type Phase of FeTiO3
© 2009 The American Physical Society
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http://link.aps.org/doi/10.1103/PhysRevLett.103.047601

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Varga, T., Kumar, A., Vlahos, E., Denev, S., Park, M., Hong, S., Sanehira, T., Wang, Y., Fennie, C. J., Streiffer, S. K., Ke, X., Schiffer, P., Gopalan, V., & Mitchell, J. F. (2009). Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}. Physical Review Letters, 103(4), 47601. https://doi.org/10.1103/PhysRevLett.103.047601

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title = "Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}",

abstract = "We report the magnetic and electrical characteristics of polycrystalline FeTiO3 synthesized at high pressure that is isostructural with acentric LiNbO3 (LBO). Piezoresponse force microscopy, optical second harmonic generation, and magnetometry demonstrate ferroelectricity at and below room temperature and weak ferromagnetism below ~120??K. These results validate symmetry-based criteria and first-principles calculations of the coexistence of ferroelectricity and weak ferromagnetism in a series of transition metal titanates crystallizing in the LBO structure.",

author = "T. Varga and A. Kumar and E. Vlahos and S. Denev and M. Park and S. Hong and T. Sanehira and Y. Wang and Fennie, {C. J.} and Streiffer, {S. K.} and X. Ke and P. Schiffer and V. Gopalan and Mitchell, {J. F.}",

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doi = "10.1103/PhysRevLett.103.047601",

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Varga, T, Kumar, A, Vlahos, E, Denev, S, Park, M, Hong, S, Sanehira, T, Wang, Y, Fennie, CJ, Streiffer, SK, Ke, X, Schiffer, P, Gopalan, V & Mitchell, JF 2009, 'Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}', Physical Review Letters, vol. 103, no. 4, pp. 47601. https://doi.org/10.1103/PhysRevLett.103.047601

TY - JOUR

T1 - Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}

AU - Varga, T.

AU - Kumar, A.

AU - Vlahos, E.

AU - Denev, S.

AU - Park, M.

AU - Hong, S.

AU - Sanehira, T.

AU - Wang, Y.

AU - Fennie, C. J.

AU - Streiffer, S. K.

AU - Ke, X.

AU - Schiffer, P.

AU - Gopalan, V.

AU - Mitchell, J. F.

PY - 2009/7/24

Y1 - 2009/7/24

N2 - We report the magnetic and electrical characteristics of polycrystalline FeTiO3 synthesized at high pressure that is isostructural with acentric LiNbO3 (LBO). Piezoresponse force microscopy, optical second harmonic generation, and magnetometry demonstrate ferroelectricity at and below room temperature and weak ferromagnetism below ~120??K. These results validate symmetry-based criteria and first-principles calculations of the coexistence of ferroelectricity and weak ferromagnetism in a series of transition metal titanates crystallizing in the LBO structure.

AB - We report the magnetic and electrical characteristics of polycrystalline FeTiO3 synthesized at high pressure that is isostructural with acentric LiNbO3 (LBO). Piezoresponse force microscopy, optical second harmonic generation, and magnetometry demonstrate ferroelectricity at and below room temperature and weak ferromagnetism below ~120??K. These results validate symmetry-based criteria and first-principles calculations of the coexistence of ferroelectricity and weak ferromagnetism in a series of transition metal titanates crystallizing in the LBO structure.

U2 - 10.1103/PhysRevLett.103.047601

DO - 10.1103/PhysRevLett.103.047601

M3 - Article

VL - 103

SP - 47601

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

ER -

Coexistence of Weak Ferromagnetism and Ferroelectricity in the High Pressure LiNbO_{3}-Type Phase of FeTiO_{3}

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