Direct measurement of magnetoelectric exchange in self-assembled epitaxial BiFeO3–CoFe2O4 nanocomposite thin films

Li, Yan; Xing, Zengping; Wang, Tao; Гуо, Лэй; Li, Jiefang; Viehland, Dwight

doi:10.1063/1.3138138

Cited by 91 publications

(53 citation statements)

References 29 publications

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“…Electrical contacts from the sample were made by gold wire bonding. Details of the measurement method were reported previously, 23 which involved the use of a lock-in amplifier. A magnet was used as the dc magnetic signal source.…”

Section: Me Coupling Coefficient Measurementmentioning

confidence: 99%

Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils

Wang¹,

Li²,

Yang³

et al. 2011

Journal of Applied Physics

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We demonstrate a significant control of the polarization response under an applied magnetic field for a magnetoelectric (ME) heterostructure. This structure was comprised of a 2 μm thick ferroelectric BaTiO3 (BTO) film deposited on flexible ferromagnetic metallic glass foil (25 μm thick). Au was used as a buffer layer to control BTO growth orientation, and to protect the metallic glass from oxidation. x-ray diffraction and scanning electron microscopy demonstrated the successful growth of well-crystallized BTO films with a high degree of (111) orientation on the amorphous metallic glass foils. Well-defined polarization (P-E) and magnetization (M-H) hysteresis loops confirmed the coexistence of ferroelectric and ferromagnetic properties. A ME voltage coefficient of about ∼60 mV/cm Oe was measured.

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Section: Me Coupling Coefficient Measurementmentioning

confidence: 99%

Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils

Wang¹,

Li²,

Yang³

et al. 2011

Journal of Applied Physics

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“…6 One dominant reason for this difficulty is that the ME voltage signal is proportional to the film thickness; it typically becomes smaller than 1 V for film thicknesses less than 1 m. To overcome this difficulty, a large ac magnetic field ͑H ac ͒ of up to ϳ1 kOe was recently used to obtain the effective MES as a function of H ac . 7,8 However, direct measurements of the MES based on a conventional scheme that employs small H ac values with variations in the dc magnetic field ͑H dc ͒ would be useful for understanding the ME coupling of numerous multiferroic films or nanostructures at the quantitative level. In this work, by use of the conventional scheme, we provide experimental evidences that a 300 nm thick BiFeO 3 -CoFe 2 O 4 ͑BFO-CFO͒ nanostructure has a peculiar MES anisotropy that is not expected in bulk forms of those materials.…”

Section: Quantitative Determination Of Anisotropic Magnetoelectric Comentioning

confidence: 99%

Quantitative determination of anisotropic magnetoelectric coupling in BiFeO3–CoFe2O4 nanostructures

Crane

Zheng

et al. 2010

Applied Physics Letters

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“…[1][2][3][4][5] Coupling between ferroelectric (FE) and ferromagnetic (FM) subsystems provides additional degrees of freedom to control either the polarization or magnetization with H and E, respectively. Although room temperature magnetoelectric effect has been found in a series of single phase materials, such as bulk Ba 3 Co 2 Fe 24 O 41 (Ref.…”

Section: Introductionmentioning

confidence: 99%

Domain rotation induced strain effect on the magnetic and magneto-electric response in CoFe2O4/Pb(Mg,Nb)O3-PbTiO3 heterostructures

Viswan¹,

Hu²,

Li³

et al. 2012

Journal of Applied Physics

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Ion doping effects in multiferroic MnWO4 J. Appl. Phys. 111, 083906 (2012) Origin of ferromagnetism and oxygen-vacancy ordering induced cross-controlled magnetoelectric effects at room temperature J. Appl. Phys. 111, 073904 (2012) Synthesis and signature of M-E coupling in novel self-assembled CaCu3Ti4O12-NiFe2O4 nanocomposite structure J. Appl. Phys. 111, 074302 (2012) Quantum levitation of a thin magnetodielectric plate on a metallic plate using the repulsive Casimir force J. Appl. Phys. 111, 074304 (2012) Additional information on J. Appl. Phys. The present work shows good control of both magnetic and electric properties with electric and magnetic fields, respectively, for epitaxial CoFe 2 O 4 (CFO) films on Pb(Mg,Nb)O 3 -PbTiO 3 (PMN-PT). X-ray reciprocal space mapping revealed a transformation between a-and c-domains in the PMN-PT under electric field (E). Magnetic hysteresis loop and magnetic force microscopy (MFM) measurements showed a considerable change in the magnetic properties in specific areas of CFO layers poled by MFM probe tips. Furthermore, a pulsed electric field applied to the substrate was found to switch the magnetization of CFO between high and low values, depending on the polarity of E.

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Direct measurement of magnetoelectric exchange in self-assembled epitaxial BiFeO3–CoFe2O4 nanocomposite thin films

Abstract: ; et al., "Direct measurement of magnetoelectric exchange in self-assembled epitaxial BiFeO3-CoFe2O4 nanocomposite thin films," Appl. Phys. Lett. 94, 192902 (2009); http://dx

Cited by 91 publications

References 29 publications

Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils

Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils

Quantitative determination of anisotropic magnetoelectric coupling in BiFeO3–CoFe2O4 nanostructures

Domain rotation induced strain effect on the magnetic and magneto-electric response in CoFe2O4/Pb(Mg,Nb)O3-PbTiO3 heterostructures

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