Magnetic field-dependent effective microwave properties of microwire-epoxy composites (original) (raw)

Giant magnetoresistance: history, development and beyond

Science China Physics, Mechanics and Astronomy, 2012

With the discovery of giant magnetoresistance (GMR), research effort has been made to exploiting the influence of spins on the mobility of electrons in ferromagnetic materials and/or artificial structures, which has lead to the idea of spintronics. A brief introduction is given to GMR effects from scientific background to experimental observations and theoretical models. In addition, the mechanisms of various magnetoresistance beyond the GMR are reviewed, for instance, tunnelling magnetoresistance, colossal magnetoresistance, and magnetoresistance in ferromagnetic semiconductors, nanowires, organic spintronics and non-magnetic systems. giant magnetoresistance, spintronics, ferromagnetic semiconductors, spin dependent scattering, tunnelling magnetoresistance PACS number(s): 75.47.De, 75.47.Lx, 75.50.Pp, 72.25.Dc Citation:

Microwave Giant Magnetoresistance Effect in Metallic Nanostructures

Physics of Metals and Metallography, 2018

The microwave properties of magnetic metallic nanostructures with a giant magnetoresistance (GMR) effect are studied. It is shown that the microwave changes are caused by two physical reasons, namely, the radiofrequency GMR effect and ferromagnetic resonance.

Giant magneto-impedance effect of thin magnetic wires at elevated frequencies

Journal of Applied Physics, 2012

Shape-induced bi-stable magnetic states in submicrometer structures of permalloy films J. Appl. Phys. 111, 07C715 The effect of field-quenching fabrication on the magnetoimpedance response in Co66Fe4Ni1Si15B14 amorphous ribbons J. Appl. Phys. 111, 053913 Enhanced magnetoimpedance effect in Co-based amorphous ribbons coated with carbon nanotubes J. Appl. Phys. 111, 07E507 Dry-etching damage to magnetic anisotropy of Co-Pt dot arrays characterized using anomalous Hall effect J. Appl. Phys. 111, 07B908 Towards compact three-dimensional magnetoelectronics-Magnetoresistance in rolled-up Co/Cu nanomembranes Appl.

Giant magnetoresistance in nanoscale ferromagnetic heterocontacts

Journal of Physics: …, 2007

A quasi-classical theory of giant magnetoresistance (GMR) in nanoscale point contacts between different ferromagnetic metals is developed. The contacts were sorted by three types of mutual positions of the conduction spin-subband bottoms which are shifted one ...

Giant magnetoresistance in hybrid nanostructures

Journal of Magnetism and Magnetic Materials, 1995

We describe the Giant Magnetoresistance (GMR) properties of multilayered structures including continuous layers of permalloy (Ni8oFe2o) and discontinuous layers of cobalt separated by layers of copper or silver. These hybrid structures exhibit large GMR ratios with high slopes at low field (as high as 7%/Oe). They are also very convenient for an accurate determination of the angular dependence of the GMR and interesting to discuss the origin of the GMR. We finally analyse GMR measurements performed with the current perpendicular to the layers and separate the bulk and interface contributions. 0304-8853/95/$09.50

Giant magnetoresistance in magnetic nanostructures. Recent developments

Materials Science and Engineering: B, 1995

This chapter contains a brief review of the giant magnetoresistance (GMR) effect exhibited by magnetic multilayers, granular alloys, and related materials. Subjects covered include a description of the phenomenon, and the related oscillatory interlayer exchange coupling in magnetic multilayers; a simple model of giant magnetoresistance; the inverse GMR effect in spin-engineered magnetic multilayers; structures that display large changes in resistance in small magnetic fields, possibly for use in magnetic field sensors; and the dependence of GMR on various aspects of the magnetic structures.