Influence of the thickness of BiFeO3 on the ferromagnet properties of layered multiferroic CoFe2O4–BiFeO3 films

Liu, Y.Q.; Wu, Yu-Han; Zhang, J.; Wei, Maobin; Li, D.; Yang, Liguo; Yang, Jing

doi:10.1016/j.spmi.2012.12.003

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…The coercive field decreases with an increase in the CFO thickness along the in-plane direction, the film BT-CFO-S2 possessed a lower coercive field when compared to other films. This low coercive field in the in-plane direction is attributed to easy movement of CFO domains due to the reduced defect density in continuous columnar structures. , …”

Section: Ferroelectric and Magnetic Propertiesmentioning

confidence: 99%

“…This low coercive field in the in-plane direction is attributed to easy movement of CFO domains due to the reduced defect density in continuous columnar structures. 41,42 ■ MAGNETO−DIELECTRIC MEASUREMENTS Magnetic field dependence of the dielectric responses was performed parallel to the plane of the composite films. Here, we define the relative change of dielectric constant induced by the applied magnetic field.…”

Section: ■ Ferroelectric and Magnetic Propertiesmentioning

confidence: 99%

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Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O₃/ CoFe₂O₄ for Magneto–Electric Based Devices

Prabahar

Bhat

Srinivas

et al. 2020

ACS Appl. Nano Mater.

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Multiferroic nanocomposites with grain to grain epitaxy-like feature comprising of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT)/CoFe2O4 (CFO)/BCZT layers were deposited on Pt/TiO2/SiO2/Si substrates by pulsed laser deposition. To enhance strain coupling between the phases, vertically ordered continuous nanostructures with grain to grain epitaxy-like feature was achieved by careful choice of material and optimized growth conditions. The columnar grains between the BCZT/CFO and CFO/BCZT interface were optimized such that every column grew in an epitaxy-like growth with grain-over grain crystallographic relation even at nanoscale. Grain to grain epitaxy was evident from TEM analysis (inverse FFT analysis). Elastic strain coupling present between various vibrational modes of BCZT and CFO was confirmed by cross-sectional Raman studies. Ferroelectric polarization of 10 μC/cm2 and out-of-plane remnant magnetization (40emu/cc) was observed in the columnar structure. The morphologically coherent columnar structure of both the phases and the epitaxial registry at the interface of the composite significantly enhanced the strain coupling between the ferroelectric/ferromagnetic phases, which is evident from the magneto–dielectric studies with a 21% change in dielectric constant and the magneto–electric(ME) coefficients (620–840 mV/cm·Oe). The ME values indicate the existence of high elastic strain coupling in continuous columnar structures compared with granular structures with an incoherent interface. Enhanced magneto–electric coupling in these types of nanostructures can be of great potential in realizing devices like actuators and sensors.

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Section: Ferroelectric and Magnetic Propertiesmentioning

confidence: 99%

Section: ■ Ferroelectric and Magnetic Propertiesmentioning

confidence: 99%

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O₃/ CoFe₂O₄ for Magneto–Electric Based Devices

Prabahar

Bhat

Srinivas

et al. 2020

ACS Appl. Nano Mater.

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Tuning magnetic properties of BiFeO3 thin films by controlling Mn doping concentration

Zhang

Wang

et al. 2018

Ceramics International

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Study on pure and Nd-doped BiFeO3 thin films prepared by chemical solution deposition method

Xue

Tan

Liu

et al. 2014

Journal of Alloys and Compounds

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Influence of the thickness of BiFeO3 on the ferromagnet properties of layered multiferroic CoFe2O4–BiFeO3 films

Cited by 5 publications

References 23 publications

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O₃/ CoFe₂O₄ for Magneto–Electric Based Devices

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O₃/ CoFe₂O₄ for Magneto–Electric Based Devices

Tuning magnetic properties of BiFeO3 thin films by controlling Mn doping concentration

Study on pure and Nd-doped BiFeO3 thin films prepared by chemical solution deposition method

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Influence of the thickness of BiFeO3 on the ferromagnet properties of layered multiferroic CoFe2O4–BiFeO3 films

Cited by 5 publications

References 23 publications

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O3/ CoFe2O4 for Magneto–Electric Based Devices

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O3/ CoFe2O4 for Magneto–Electric Based Devices

Tuning magnetic properties of BiFeO3 thin films by controlling Mn doping concentration

Study on pure and Nd-doped BiFeO3 thin films prepared by chemical solution deposition method

Contact Info

Product

Resources

About

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O₃/ CoFe₂O₄ for Magneto–Electric Based Devices

Grain to Grain Epitaxy-Like Nano Structures of (Ba,Ca)(ZrTi)O₃/ CoFe₂O₄ for Magneto–Electric Based Devices