Giant electric-field-induced reversible and permanent magnetization reorientation on magnetoelectric Ni/(011) [Pb(Mg1/3Nb2/3)O3](1−x)–[PbTiO3]x heterostructure

Wu, Tao; Bur, Alexandre; Zhao, Ping; Mohanchandra, K. P.; Wong, Kin; Wang, Kang L.; Lynch, Christopher S.; Carman, Gregory P.

doi:10.1063/1.3534788

Cited by 240 publications

(86 citation statements)

References 28 publications

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“…3(c)] via a metastable ferroelastic switching. 31,32 Now the DC voltage is applied across the NiFe/PMN-PT heterostructure for in situ AMR measurement upon the rotation magnetic field of 30 Oe. Figures 4(a)-4(c) show the angular dependence of the DR/R at the two saturation voltages (6200 V, i.e., points B and D) as well as at the coercive voltage (80 V, point C).…”

Section: Via Voltage-induced Strainsmentioning

confidence: 99%

Strain-mediated voltage control of magnetism in multiferroic Ni77Fe23/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 heterostructure

Gao

Hu²,

Shu

et al. 2014

Applied Physics Letters

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Using voltage-modified anisotropic magnetoresistance (AMR) measurement, we demonstrated a strain-mediated voltage control of magnetism in multiferroic Ni77Fe23(NiFe, 10 nm)/Pb (Mg1/3Nb2/3)0.7Ti0.3O3(PMN-PT, bulk crystal) heterostructure, even assuming a very small magnetostriction (∼0.3 ppm) for the NiFe film which has a composition close to bulk permalloy (Ni80Fe20). Influence of the magnitude of the rotating magnetic field used for AMR tests is studied. Combined AMR and theoretical analysis indicate the voltage-modified change in the magnetoresistance of the NiFe film arises from the reduced free energy barrier between the magnetic easy axis and hard axis via voltage-induced strains in the PMN-PT.

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Section: Via Voltage-induced Strainsmentioning

confidence: 99%

Strain-mediated voltage control of magnetism in multiferroic Ni77Fe23/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 heterostructure

Gao

Hu²,

Shu

et al. 2014

Applied Physics Letters

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“…In order to produce biaxial in-plane anisotropic piezo-/ferroelastic strains by longitudinally applying a voltage to the FE layer, we can use a (011) FE layer (or maybe (001) rhombohedral FE layer with spontaneous polarization along 111 directions). For example, a (011) lead magnesium niobate-lead titanate (PMN-PT) can produce bistable anisotropic in-plane piezostrains [88]. For further illustration, we consider an Ni/PMN-PT heterostructure.…”

Section: (B) In-plane Magnetization Switching By In-plane Voltagementioning

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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“…19,20,30,32 There have been few studies focusing on the microwave properties of the samples in unpoled state in comparison with the poled state. 21 In this work, we investigate the dynamic permeability spectra and the static magnetization of a multiferroic FeCoTa/[Pb(Mg 1/3 Nb 2/3 )O 3 ] 0.68 -[PbTiO 3 ] 0. 32 (PMN-PT) heterostructure as a function of E-field from the unpoled state to the poled state.…”

mentioning

confidence: 99%

Electric field control of microwave characteristics in composition-graded FeCoTa film grown onto [Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32(011) crystal

Phuoc

Ong

2014

Applied Physics Letters

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The magnetic and microwave properties of a heterostructure composing of a composition-graded FeCoTa film and a [Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32(011) substrate were investigated with respect to a varied applied electric field. For the as-deposited sample in the initial unpoled state, the resonance frequency is 7.2 GHz and it is suddenly increased to 8.4 GHz when the applied electric field reaches 2 kV/cm. Then upon the changing of the electric field from 6 kV/cm to −6 kV/cm, the resonance frequency is varied in the range from 8.4 GHz to 9.2 GHz. The resonance frequency can only be reset back to the lower level with the value of 7.6 GHz through the depolarization process. The results are interpreted in terms of the change in ferroelectric domain structures leading to the variation of the stress-induced magnetic anisotropy, which is experimentally verified by the magnetic and microwave behaviors after depolarization.

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Giant electric-field-induced reversible and permanent magnetization reorientation on magnetoelectric Ni/(011) [Pb(Mg1/3Nb2/3)O3](1−x)–[PbTiO3]x heterostructure

Cited by 240 publications

References 28 publications

Strain-mediated voltage control of magnetism in multiferroic Ni77Fe23/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 heterostructure

Strain-mediated voltage control of magnetism in multiferroic Ni77Fe23/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 heterostructure

Film size-dependent voltage-modulated magnetism in multiferroic heterostructures

Electric field control of microwave characteristics in composition-graded FeCoTa film grown onto [Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32(011) crystal

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