Ferromagnetism and exchange bias in a diluted magnetic ferroelectric oxide

L. B. Luo; Y. G. Zhao; H. F. Tian; J. J. Yang; J. Q. Li; J. J. Ding; B. He; S. Q. Wei; C. Gao

doi:10.1103/PhysRevB.79.115210

Ferromagnetism and exchange bias in a diluted magnetic ferroelectric oxide

L. B. Luo, Y. G. Zhao, H. F. Tian, J. J. Yang, J. Q. Li, J. J. Ding, B. He, S. Q. Wei, C. Gao

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19 Scopus citations

Abstract

We report on the observations of room-temperature ferromagnetism and ferroelectricity in the epitaxial thin film of BaTi0.98 Co0.02 O3 (CBTO) with detailed structural and magnetic analyses. The films are single phase with an inhomogeneous distribution of Co2+ dopants in the structure. Room-temperature ferromagnetic hysteresis and ferroelectric loop were observed. Remarkably, the hysteresis loops for field cooling show the exchange bias and training effects. The complex magnetic behavior of CBTO was interpreted in the frame of bound magnetic polaron formation with inhomogeneity of dopant distribution. This work also demonstrated that exchange bias can be a helpful technique in exploring the mechanism of dopant-induced ferromagnetism.

Original language	English (US)
Article number	115210
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.79.115210
State	Published - Mar 3 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.79.115210

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title = "Ferromagnetism and exchange bias in a diluted magnetic ferroelectric oxide",

abstract = "We report on the observations of room-temperature ferromagnetism and ferroelectricity in the epitaxial thin film of BaTi0.98 Co0.02 O3 (CBTO) with detailed structural and magnetic analyses. The films are single phase with an inhomogeneous distribution of Co2+ dopants in the structure. Room-temperature ferromagnetic hysteresis and ferroelectric loop were observed. Remarkably, the hysteresis loops for field cooling show the exchange bias and training effects. The complex magnetic behavior of CBTO was interpreted in the frame of bound magnetic polaron formation with inhomogeneity of dopant distribution. This work also demonstrated that exchange bias can be a helpful technique in exploring the mechanism of dopant-induced ferromagnetism.",

author = "Luo, {L. B.} and Zhao, {Y. G.} and Tian, {H. F.} and Yang, {J. J.} and Li, {J. Q.} and Ding, {J. J.} and B. He and Wei, {S. Q.} and C. Gao",

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doi = "10.1103/PhysRevB.79.115210",

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T1 - Ferromagnetism and exchange bias in a diluted magnetic ferroelectric oxide

AU - Luo, L. B.

AU - Zhao, Y. G.

AU - Tian, H. F.

AU - Yang, J. J.

AU - Li, J. Q.

AU - Ding, J. J.

AU - He, B.

AU - Wei, S. Q.

AU - Gao, C.

PY - 2009/3/3

Y1 - 2009/3/3

N2 - We report on the observations of room-temperature ferromagnetism and ferroelectricity in the epitaxial thin film of BaTi0.98 Co0.02 O3 (CBTO) with detailed structural and magnetic analyses. The films are single phase with an inhomogeneous distribution of Co2+ dopants in the structure. Room-temperature ferromagnetic hysteresis and ferroelectric loop were observed. Remarkably, the hysteresis loops for field cooling show the exchange bias and training effects. The complex magnetic behavior of CBTO was interpreted in the frame of bound magnetic polaron formation with inhomogeneity of dopant distribution. This work also demonstrated that exchange bias can be a helpful technique in exploring the mechanism of dopant-induced ferromagnetism.

AB - We report on the observations of room-temperature ferromagnetism and ferroelectricity in the epitaxial thin film of BaTi0.98 Co0.02 O3 (CBTO) with detailed structural and magnetic analyses. The films are single phase with an inhomogeneous distribution of Co2+ dopants in the structure. Room-temperature ferromagnetic hysteresis and ferroelectric loop were observed. Remarkably, the hysteresis loops for field cooling show the exchange bias and training effects. The complex magnetic behavior of CBTO was interpreted in the frame of bound magnetic polaron formation with inhomogeneity of dopant distribution. This work also demonstrated that exchange bias can be a helpful technique in exploring the mechanism of dopant-induced ferromagnetism.

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JF - Physical Review B - Condensed Matter and Materials Physics

IS - 11

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Ferromagnetism and exchange bias in a diluted magnetic ferroelectric oxide

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