Magnetic-Field-Induced Electric Polarization in Multiferroic Nanostructures

Nan, Ce Wen; Liu, Gang; Lin, Yuanhua; Chen, Haydn

doi:10.1103/physrevlett.94.197203

Cited by 344 publications

(194 citation statements)

References 25 publications

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“…Such isotropic strain ε 0 can be obtained either from the intrinsic lattice and/or thermal mismatch between a film and a substrate [84] or from external piezoelectric actuation [85]. As seen, the CFO film displays a uniform single-domain structure at such a small lateral size (see the inset of figure 4a).…”

Section: Size-dependent Voltage-modulated Magnetism By Phase-field Apmentioning

confidence: 99%

Film size-dependent voltage-modulated magnetism in multiferroic heterostructures

Shu

et al. 2014

Phil. Trans. R. Soc. A.

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The electric-voltage-modulated magnetism in multiferroic heterostructures, also known as the converse magnetoelectric (ME) coupling, has drawn increasing research interest recently owing to its great potential applications in future low-power, high-speed electronic and/or spintronic devices, such as magnetic memory and computer logic. In this article, based on combined theoretical analysis and experimental demonstration, we investigate the film size dependence of such converse ME coupling in multiferroic magnetic/ferroelectric heterostructures, as well as exploring the interaction between two relating coupling mechanisms that are the interfacial strain and possibly the charge effects. We also briefly discuss some issues for the next step and describe new device prototypes that can be enabled by this technology.

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Section: Size-dependent Voltage-modulated Magnetism By Phase-field Apmentioning

confidence: 99%

Film size-dependent voltage-modulated magnetism in multiferroic heterostructures

Shu

et al. 2014

Phil. Trans. R. Soc. A.

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“…The observation of ME coupling in the self-assembled multiferroic BaTiO 3 ͑BTO͒ / CoFe 2 O 4 ͑CFO͒ nanostructures 3 motivated a broad range of research in multiferroic nanocomposites from the aspect of experimental characterization 4,5 and theoretical calculation. 6 Enhanced polarization observed in ferroelectric superlattice 7 may provide a new route to multiferroic superlattice structure. 8 Therefore, the interfacial effects may play a critical role in deciding the intrinsic ferroelectric, magnetic, and even the ME coupling in the interface of ferroelectric/magnetic heterostructure.…”

Section: Introductionmentioning

confidence: 99%

Interfacial engineering and coupling of electric and magnetic properties in Pb(Zr0.53Ti0.47)O3/CoFe2O4 multiferroic epitaxial multilayers

Zhang

Chan

2010

Journal of Applied Physics

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Epitaxial magnetoelectric ͑ME͒ Pb͑Zr 0.53 Ti 0.47 ͒O 3 ͑PZT͒ / CoFe 2 O 4 ͑CFO͒ multilayer nanocomposite thin films with up to 11 alternative layers are grown on Nb doped SrTiO 3 ͑STO͒ substrates by pulsed-laser deposition. X-ray diffraction and high resolution transmission electron microscopy studies reveal a good epitaxial relationship between the PZT and CFO layers without interfacial reaction at their interfaces. These epitaxial composite films exhibit strong ferroelectric and magnetic responses simultaneously at room temperature, and the interfacial-coupling-modulated dielectric behavior, polarization, and magnetic properties are observed and analyzed systematically. These results suggest that the magnetic, electric, and ME coupling effect may be tuned by the "strain engineering" in ferroelectric/magnetic or other multiferroic superlattice.

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“…However, for all future applications, an understanding of the coupling mechanism between the two constituents is essential. Although in phase-field simulations, electrostriction (strain pP 2 ) in BTO has often exclusively been taken into account 13 , piezoelectricity (strain pP) is rarely discussed 14 .…”

mentioning

confidence: 99%

Electric in-plane polarization in multiferroic CoFe2O4/BaTiO3 nanocomposite tuned by magnetic fields

et al. 2013

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Ferrimagnetic CoFe 2 O 4 nanopillars embedded in a ferroelectric BaTiO 3 matrix are an example for a two-phase magnetoelectrically coupled system. They operate at room temperature and are free of any resource-critical rare-earth element, which makes them interesting for potential applications. Prior studies succeeded in showing strain-mediated coupling between the two subsystems. In particular, the electric properties can be tuned by magnetic fields and the magnetic properties by electric fields. Here we take the analysis of the coupling to a new level utilizing soft X-ray absorption spectroscopy and its associated linear dichroism. We demonstrate that an in-plane magnetic field breaks the tetragonal symmetry of the (1,3)-type CoFe 2 O 4 /BaTiO 3 structures and discuss it in terms of off-diagonal magnetostrictive-piezoelectric coupling. This coupling creates staggered in-plane components of the electric polarization, which are stable even at magnetic remanence due to hysteretic behaviour of structural changes in the BaTiO 3 matrix. The competing mechanisms of clamping and relaxation effects are discussed in detail.

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Magnetic-Field-Induced Electric Polarization in Multiferroic Nanostructures

Cited by 344 publications

References 25 publications

Film size-dependent voltage-modulated magnetism in multiferroic heterostructures

Film size-dependent voltage-modulated magnetism in multiferroic heterostructures

Interfacial engineering and coupling of electric and magnetic properties in Pb(Zr0.53Ti0.47)O3/CoFe2O4 multiferroic epitaxial multilayers

Electric in-plane polarization in multiferroic CoFe2O4/BaTiO3 nanocomposite tuned by magnetic fields

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