Cytocompatible magnetostrictive microstructures for nano- and microparticle manipulation on linear strain response piezoelectrics

Xiao, Zhuyun; Khojah, Reem; Chooljian, Marc; Conte, Roberto Lo; Schneider, J.; Fitzell, Kevin; Chopdekar, Rajesh V.; Wang, Yilian; Scholl, Andreas; Chang, Jane P.; Carman, Gregory P.; Bokor, Jeffrey; Carlo, Dino Di; Candler, Rob N.

doi:10.1088/2399-7532/aae4d7

Cited by 6 publications

(10 citation statements)

References 30 publications

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“…Recent advances in multiferroic magnetoelectric composites 1 have brought us closer to applying fundamental research discoveries to a broad range of applications, including datastorage devices [2][3][4] , probabilistic computing platforms 5 , voltage-tunable radio-frequency microwave devices 6,7 , artificial neural networks 8,9 , and microfluidic particle and cell sorting platforms [10][11][12] . For multiferroic heterostructures, understanding the strain that is coupled into the magnetoelastic structures is necessary, especially any variation in strain with length scales similar to the magnetic element size.…”

Section: Main Manuscriptmentioning

confidence: 99%

Localized strain profile in surface electrode array for programmable composite multiferroic devices

Xiao

Lai

Zheng

et al. 2021

Applied Physics Letters

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We investigate localized in-plane strains on the microscale, induced by arrays of biased surface electrodes patterned on piezoelectrics. Particular focus is given to the influence that adjacent electrode pairs have on one another to study the impact of densely packed electrode arrays. We present a series of X-ray microdiffraction studies to reveal the spatially-resolved micron-scale strain distribution. The strain maps with micron-scale resolution highlight how the local strain

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Section: Main Manuscriptmentioning

confidence: 99%

Localized strain profile in surface electrode array for programmable composite multiferroic devices

Xiao

Lai

Zheng

et al. 2021

Applied Physics Letters

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“…Strain-mediated magnetoelectric (ME) heterostructures consisting of ferromagnetic (FM) and ferroelectric (FE) constituent layers are being explored as an advantageous device structure for local control of polarization, strain and magnetization at micron and sub-micron length scales 1 – 3 . Small-scale magnetic structures have certain applications, such as cell-sorting 4 , cancer-cell destruction 5 , bacteria isolation 6 , and microsurgery 7 , that would realize advances in overall size, energy efficiency and precision by migrating from traditional coil-based techniques to strain-modulated magnetization in such coupled FM–FE heterostructures 8 . Uniform magnetic behavior among these ME heterostructures is critical to the large-scale manufacturability of reliable strain-mediated devices 9 , 10 .…”

Section: Introductionmentioning

confidence: 99%

Effect of interfacial and edge roughness on magnetoelectric control of Co/Ni microdisks on PMN-PT(011)

Hsiao

Gopman

Mohanchandra

et al. 2022

Sci Rep

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Uniform magnetic behavior within arrays of magnetoelectric heterostructures is important for the development of reliable strain-mediated microdevices. Multiple mechanisms may contribute to observed nonuniform magnetization reversal including surface roughness, non-uniform strain, and fabrication induced imperfections. Here, Co/Ni microdisks of 7 µm diameter were produced on both [Pb(Mg1/3Nb2/3)O3]1−x–[PbTiO3]x with x = 0.3 nominal composition (PMN-30PT) (011) and Si substrates, and the out-of-plane magnetization reversal was characterized using magneto-optical Kerr effect (MOKE). Coercivity variation across the microdisks within the arrays was observed on both the PMN-30PT and Si specimens with zero electric field applied. Co/Ni microdisks on a PMN-30PT substrate displayed relatively larger coercivity than those on a Si substrate due to the surface roughness effect. Quasistatic electric fields of varying magnitude were applied to the PMN-30PT substrate to assess the dependence of the coercivity on electric field induced strain. Our results indicate that while coercivity decreases with the increase of electric field induced strain, interfacial and edge roughness combine to realize a prohibitively large coercivity to overcome within the Co/Ni microdisks as well as a broad distribution of coercive field across a patterned microdisk array.

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“…37 microwave devices such as antennae, 38 and even in magnetic particles and cell sorting platforms. 28 For example, in the case of memory applications that uses magnetic tunnel junction (MTJ), the bilayer could serve as the free layer. To further understand how the exchange-coupled bilayer differs from the summation of the two individual layers, the energy terms in different systems before and after applying the strain are reported and compared in Figure 5.…”

Section: ■Introductionmentioning

confidence: 99%

“…To study the electric field-driven magnetic reorientation in the initialized microsquares, we exploit the piezoelectric properties of the PMN–PT substrates. When an electric field is applied along the [011] crystallographic direction of the PMN–PT crystal, a piezostrain is generated along the two main in-plane crystallographic directions, ,, a compressive strain along the [100] direction, and a tensile strain along the [01–1] direction. This strain is transferred to the magnetic layers deposited on top of the PMN–PT substrate (Figure a), inducing a reorientation of the magnetic moments in the microstructures via the inverse magnetostrictive effect. ,,− Furthermore, the direction of the magnetic reorientation is dictated by the sign of the magnetostrictive constant of the specific magnetic material under investigation.…”

Section: Introductionmentioning

confidence: 99%

“…This makes it clear that the exchange-coupled magnetoelastic bilayer shows an emergent magnetic behavior that is specific of the hybrid system and not simply the sum of the properties of its constituent. This finding has repercussions on our understanding of magnetoelastic systems and opens up a new avenue for the development of novel magnetoelectric materials with tunable functionalities applicable in multiferroic-based memory, logic, sensors, microwave devices such as antennae, and even in magnetic particles and cell sorting platforms . For example, in the case of memory applications that uses magnetic tunnel junction (MTJ), the bilayer could serve as the free layer.…”

Section: Introductionmentioning

confidence: 99%

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Tunable Magnetoelastic Effects in Voltage-Controlled Exchange-Coupled Composite Multiferroic Microstructures

Xiao

Conte

Goiriena-Goikoetxea

et al. 2020

ACS Appl. Mater. Interfaces

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The magnetoelectric properties of exchangecoupled Ni/ CoFeB-based composite multiferroic microstructures are investigated. The strength and sign of the magnetoelastic effect are found to be strongly correlated with the ratio between the thicknesses of two magnetostrictive materials. In cases where the thickness ratio deviates significantly from one, the magnetoelastic behavior of the multiferroic microstructures is dominated by the thicker layer, which contributes more strongly to the observed magnetoelastic effect. More symmetric structures with a thickness ratio equal to one show an emergent interfacial behavior which cannot be accounted for simply by summing up the magnetoelastic effects occurring in the two constituent layers. This aspect is clearly visible in the case of ultrathin bilayers, where the exchange coupling drastically affects the magnetic behavior of the Ni layer, making the Ni/CoFeB bilayer a promising nextgeneration synthetic magnetic system entirely. This study demonstrates the richness and high tunability of composite multiferroic systems based on coupled magnetic bilayers compared to their single magnetic layer counterparts. Furthermore, because of the compatibility of CoFeB with present magnetic tunnel junction-based spintronic technologies, the reported findings are expected to be of great interest for the development of ultralow-power magnetoelectric memory devices.

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Cytocompatible magnetostrictive microstructures for nano- and microparticle manipulation on linear strain response piezoelectrics

Cited by 6 publications

References 30 publications

Localized strain profile in surface electrode array for programmable composite multiferroic devices

Localized strain profile in surface electrode array for programmable composite multiferroic devices

Effect of interfacial and edge roughness on magnetoelectric control of Co/Ni microdisks on PMN-PT(011)

Tunable Magnetoelastic Effects in Voltage-Controlled Exchange-Coupled Composite Multiferroic Microstructures

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