Voltage control of unidirectional anisotropy in ferromagnet-multiferroic system

Manipatruni, Sasikanth; Nikonov, Dmitri E.; Lin, Chia Ching; Prasad, Bhagwati; Huang, Ying; Damodaran, Anoop R.; Chen, Zuhuang; Ramesh, R.; Young, Ian A.

doi:10.1126/sciadv.aat4229

Cited by 66 publications

(58 citation statements)

References 35 publications

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“…It is found that the coupling between antiferromagnetic domain patterns and ferroelectric domains only occurs with the 71° and 109° polarization switching, while it cannot be found with the 180° ferroelectric polarization switching. This work is a crucial first step in the exploration of approaches for researchers into investigations of the ME coupling property of BFO [35,104,[106][107][108].…”

Section: Magnetoelectric Couplingmentioning

confidence: 99%

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Structure, Performance, and Application of BiFeO3 Nanomaterials

et al. 2020

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Section: Magnetoelectric Couplingmentioning

confidence: 99%

“…A electrically switchable exchange bias is observed at the interface between the BFO and giant magnetoresistance. Adapted with permission from Ref [108]…”

mentioning

confidence: 99%

Structure, Performance, and Application of BiFeO3 Nanomaterials

et al. 2020

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“…BFO is a rare room-temperature multiferroic with the largest spontaneous polarization among single-phase compounds known to date, and may be soon used in nano-devices 20 . Three types of ferroelectric DWs in the rhombohedral phase are distinguished by the number of polarization components being reversed 21 .…”

Section: Introductionmentioning

confidence: 99%

Domain wall-localized phonons in BiFeO3: spectrum and selection rules

et al. 2020

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Ferroelectric domain walls (DWs) are nanoscale topological defects that can be easily tailored to create nanoscale devices. Their excitations, recently discovered to be responsible for GHz DW conductivity, hold promise for faster signal transmission and processing compared to the existing technology. Here we find that DW phonons have unprecedented dispersion going from GHz all the way to THz frequencies, and resulting in a surprisingly broad GHz signature in DW conductivity. Puzzling activation of nominally forbidden DW sliding modes in BiFeO 3 is traced back to DW tilting and resulting asymmetry in wall-localized phonons. The obtained phonon spectra and selection rules are used to simulate scanning impedance microscopy, emerging as a powerful probe in nanophononics. The results will guide the experimental discovery of the predicted phonon branches and design of DWbased nanodevices operating in the technologically important frequency range.

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“…Magnetoelectric multiferroics have emerged as an attractive material system due to their multifunctionality for a variety of potential device applications in energy and memory technologies [ 1 , 2 , 3 ]. These devices are mainly based on epitaxial thin-film heterostructures with smooth surfaces and interfaces at atomic scale [ 2 , 4 , 5 , 6 , 7 ]. Recent advances in epitaxial growth techniques have enabled the synthesis and design of multiferroic heterostructures that give rise to a variety of multifunctional properties [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Epitaxial Stabilization of Single-Crystal Multiferroic YCrO3 Thin Films

et al. 2020

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We report on the growth of stoichiometric, single-crystal YCrO3 epitaxial thin films on (001) SrTiO3 substrates using pulsed laser deposition. X-ray diffraction and atomic force microscopy reveal that the films grew in a layer-by-layer fashion with excellent crystallinity and atomically smooth surfaces. Magnetization measurements demonstrate that the material is ferromagnetic below 144 K. The temperature dependence of dielectric permittivity shows a characteristic relaxor-ferroelectric behavior at TC = 375–408 K. A dielectric anomaly at the magnetic transition temperature indicates a close correlation between magnetic and electric order parameters in these multiferroic YCrO3 films. These findings provide guidance to synthesize rare-earth, chromite-based multifunctional heterostructures and build a foundation for future studies on the understanding of magnetoelectric effects in similar material systems.

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Voltage control of unidirectional anisotropy in ferromagnet-multiferroic system

Abstract: Magnetoelectricity enables a new class of nonvolatile, ultralow-energy computing with quantum materials for AI & Moore’s law.

Cited by 66 publications

References 35 publications

Structure, Performance, and Application of BiFeO3 Nanomaterials

Structure, Performance, and Application of BiFeO3 Nanomaterials

Domain wall-localized phonons in BiFeO3: spectrum and selection rules

Epitaxial Stabilization of Single-Crystal Multiferroic YCrO3 Thin Films

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