Towards compact three-dimensional magnetoelectronics—Magnetoresistance in rolled-up Co/Cu nanomembranes

Müller, Christian; Bufon, Carlos César Bof; Fuentes, M. E. Navarro; Makarov, Denys; Mosca, D. H.; Schmidt, Oliver G.

doi:10.1063/1.3676269

Cited by 30 publications

(25 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By proper strain engineering, magnetic nanomembranes can also be rolled up into microtubes . In this way, compact three‐dimensional GMR sensors for magnetofluidic applications, spin‐wave filters, and remotely controlled microrobots have been realized.…”

Section: Acknowledgementsmentioning

confidence: 99%

Magnetic Microstructure of Rolled‐Up Single‐Layer Ferromagnetic Nanomembranes

et al. 2013

View full text Add to dashboard Cite

The magnetic microstructure of rolled‐up magnetic nanomembranes is revealed both theoretically and experimentally. Two types of nanomembranes are considered, one with a non‐magnetic spacer layer and the other without. Experimentally, by using different materials and tuning the dimensions of the rolled‐up nanomembranes, domain patterns consisting of spiral‐like and azimuthally magnetized domains are observed, which are in qualitative agreement with the theoretical predictions.

show abstract

Section: Acknowledgementsmentioning

confidence: 99%

Magnetic Microstructure of Rolled‐Up Single‐Layer Ferromagnetic Nanomembranes

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Introduction Layer nanostructures of the type of ferromagnet-normal metal (FM-NM) -multilayer films, pillars, wires, membranes, which are based on homogeneous or granular layers of Co and Cu -continue to be a primary focus of engineers and researchers of magnetoresistive materials. [1][2][3] The achieved value of the magnetoresistive effect at room temperature in nanostructures Co/Cu exceeds 90%. 2 The primary factor responsible for the magnetoresistive properties of layered and granular systems FM-NM is the presence of a sharp interface between the components.…”

mentioning

confidence: 90%

“…[1][2][3] The achieved value of the magnetoresistive effect at room temperature in nanostructures Co/Cu exceeds 90%. 2 The primary factor responsible for the magnetoresistive properties of layered and granular systems FM-NM is the presence of a sharp interface between the components. Nonwettability and mutual insolubility of Co and Cu prevents from the formation of alloys Co x Cu 1-x with intermediate magnetic properties 4 that makes it possible to prepare sharp interfaces Co/Cu, resulting in the fact that systems based on them are among the most promising magnetoresistive materials.…”

mentioning

confidence: 90%

Reduction of superparamagnetic clusters in the [Co/Cu(111)]n nanofilms, induced by the quantum size effect

Lukienko

Kharchenko

Khrustalev

et al. 2012

Low Temperature Physics

View full text Add to dashboard Cite

It is known that the quantum size effects are important for the formation of morphological properties of metal films. The regularities in the behavior of the superparamagnetic magnetoresistive effect in multilayer nanofilms Co/Cu(111) in a magnetic field, found in the work, indicate the influence of the electron size effect on the formation of clusters in these films. The results of measurements of the high-field magnetoresistive effect are reported for multilayer films [Co/Cu(111)]20 with a constant thickness of cobalt layers and the thickness of copper layer varying from film to film. It is found that an effective size of superparamagnetic formations is reduced in the films with thickness of the copper layers corresponding to the maxima of the antiferromagnetic exchange coupling between cobalt layers. It is suggested that the observed “grinding” of superparamagnetic particles is caused by oscillating changes in the electron density in the interface layer Co/Cu, induced by electron quantum size effect in the copper layers.

show abstract

“…Strain-driven self-coiling is a powerful technique for preparing three-dimensional structures of metallic thin films [14][15][16][17][18][19][20]. In previous work [21], we fabricated micrometer-sized chiral structures of ferromagnetic metallic cobalt (Co) films, like magnetic microhelix coils, using a strain-driven self-coiling technique with two-step photolithography followed by lift-off processes [22].…”

Section: Introductionmentioning

confidence: 99%

Ferromagnetic Resonance of a Single Magnetochiral Metamolecule of Permalloy

et al. 2016

View full text Add to dashboard Cite

We investigate the ferromagnetic resonance (FMR) of a single chiral structure of a ferromagnetic metal-the magnetochiral (MCh) metamolecule. Using a strain-driven self-coiling technique, micrometersized MCh metamolecules of metallic permalloy (Py) are fabricated without any residual Py films. The magnetization curves of ten Py MCh metamolecules obtained by an alternating gradient magnetometer show soft magnetic behavior. In cavity FMR with a magnetic-field sweep and coplanar-waveguide (CPW) FMR with a frequency sweep, the Kittel-mode FMR of the single Py metamolecule is observed. The CPW-FMR results, which are consistent with the cavity-FMR results, bring about the effective g factor, effective magnetization, and Gilbert damping of the single metamolecule. Together with calculations using these parameters, the angle-resolved cavity FMR reveals that the magnetization in the Py MCh metamolecule is most likely to be the hollow-bar type of configuration when the external magnetic field is applied parallel to the chiral axis, although the expected magnetization state at remanence is the corkscrew type of configuration.

show abstract

Towards compact three-dimensional magnetoelectronics—Magnetoresistance in rolled-up Co/Cu nanomembranes

Cited by 30 publications

References 19 publications

Magnetic Microstructure of Rolled‐Up Single‐Layer Ferromagnetic Nanomembranes

Magnetic Microstructure of Rolled‐Up Single‐Layer Ferromagnetic Nanomembranes

Reduction of superparamagnetic clusters in the [Co/Cu(111)]n nanofilms, induced by the quantum size effect

Ferromagnetic Resonance of a Single Magnetochiral Metamolecule of Permalloy

Contact Info

Product

Resources

About