Piezoresponse force microscopy and magnetic force microscopy characterization of γ-Fe2O3–BiFeO3 nanocomposite/Bi3.25La0.75Ti3O12 multiferroic bilayers

Gautreau, O.; Harnagea, Cătălin; Gunawan, Lina; Nechache, Riad; Singh, Maninder; Fournier, P.; Botton, Gianluigi A.; Pignolet, A.

doi:10.1016/j.jmmm.2009.02.009

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…This striking similitude in the macroscopic and nanoscale ferroelectric behaviors strongly suggests that ferroelectricity is spatially uniform over several orders of magnitude and originate in the behavior of nanoscale regions, not only for our BFO-FO/BLT bilayers, 14 but for all the heterostructures discussed as well. 9͑d͔͒.…”

Section: Ferroelectric Propertiesmentioning

confidence: 75%

“…12,14 Hence, simply using the saturation magnetization values for each phase ͑BFO and maghemite͒ to deduce the fraction of each phase from the measured saturation magnetization will not provide an accurate estimation of the quantities of the different phases. In such a configuration, the alignment of the magnetic domains parallel to an out-of-plane magnetic field is easier, leading to an easy axis of magnetization direction along the normal to the substrate.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

“…The presence of these unique properties in BFO at room temperature prompts it to be a potential candidate in data storage media and multiple state memories. 12,14 The epitaxial grains of ␥-Fe 2 O 3 develop to reduce the effect of the elastic strain field in BFO and minimize the elastic energy as described by the thermodynamic theory of elastic domains. The most important are the leakage current arising from the presence of Fe 2+ ions and oxygen vacancies V O 2+ contributing to conduction, the high electric coercive field, the low resistance to ferroelectric fatigue, as well as the relatively low saturation magnetization.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and ferroic properties of epitaxial [γ-Fe2O3–BiFeO3]−Bi3.25La0.75Ti3O12 composite bilayers

Gautreau

Harnagea

Gunawan

et al. 2010

Journal of Applied Physics

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Epitaxial [γ-Fe2O3–BiFeO3]/Bi3.25La0.75Ti3O12 and Bi3.25La0.75Ti3O12/[γ-Fe2O3–BiFeO3] composite bilayers were grown on SrRuO3 coated (111) SrTiO3 substrates in order to investigate the influence of the morphology of the γ-Fe2O3–BiFeO3 self assembled nanocomposite layer on the multiferroic properties of the bilayer. Both types of bilayers exhibit high resistivity and simultaneously ferroelectricity and ferrimagnetism at room temperature. When the γ-Fe2O3–BiFeO3 composite layer is sandwiched between the Bi3.25La0.75Ti3O12 film and the substrate, the BiFeO3 component is not only subjected to epitaxial strain induced by the surface on top of which it grows but also to elastic interactions with the Bi3.25La0.75Ti3O12 capping layer. The latter indeed reduce the amount of γ-Fe2O3 inclusions, affects the morphology of the grains in the γ-Fe2O3–BiFeO3 layer, and increases the shape anisotropy of the γ-Fe2O3 inclusions. Additionally, this modification in the microstructure of the γ-Fe2O3–BiFeO3 layer induces an imprint in the ferroelectric hysteresis loop as well as a decrease in the saturation magnetization, and its magnetic easy axis direction changes from in-plane to out-of plane.

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Section: Ferroelectric Propertiesmentioning

confidence: 75%

Section: Magnetic Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure and ferroic properties of epitaxial [γ-Fe2O3–BiFeO3]−Bi3.25La0.75Ti3O12 composite bilayers

Gautreau

Harnagea

Gunawan

et al. 2010

Journal of Applied Physics

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show abstract

“…Because no electron transport is involved, both insulators and biological samples can be investigated down to atomic resolution. Information on topography [6][7][8][9][10][11], roughness [9,10], friction [8], adhesion [8,11], elastic properties [12,13], magnetic field [14,15], resistivity [16,17], etc. can be obtained by the AFM with nanometer resolution.…”

Section: Invention Of the Toolsmentioning

confidence: 99%

The Working of the Atomic Force Microscope for Chemical Mapping~!2009-04-28~!2009-05-20~!2009-06-19~!

Triampo¹,

Triampo²

2010

TOMSJ

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Abstract:Since the invention of the scanning tunneling microscope (STM) in 1981 and the atomic force microscope (AFM) in 1986, over 5,000 publications have cited the article "Atomic Force Microscope" by G. Binnig, C.F. Quate, and C. Gerber (published in Physical Review Letters, 1986). This article presents a short review on the operating principle and possible applications of AFM with special attention devoted to chemical mapping. The article would be useful for beginners in AFM technique.

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Nanostructured Multiferroics: Current Trends and Future Prospects

Visakh

Raneesh²

2021

Nanostructured Multiferroics

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Piezoresponse force microscopy and magnetic force microscopy characterization of γ-Fe2O3–BiFeO3 nanocomposite/Bi3.25La0.75Ti3O12 multiferroic bilayers

Cited by 10 publications

References 12 publications

Microstructure and ferroic properties of epitaxial [γ-Fe2O3–BiFeO3]−Bi3.25La0.75Ti3O12 composite bilayers

Microstructure and ferroic properties of epitaxial [γ-Fe2O3–BiFeO3]−Bi3.25La0.75Ti3O12 composite bilayers

The Working of the Atomic Force Microscope for Chemical Mapping~!2009-04-28~!2009-05-20~!2009-06-19~!

Nanostructured Multiferroics: Current Trends and Future Prospects

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