Journal ArticleDOI
Giant magnetoresistance in heterogeneous Cu-Co alloys.
Ami E. Berkowitz,J. R. Mitchell,Matthew J. Carey,A. P. Young,Shufeng Zhang,Frederick E. Spada,F. T. Parker,Andreas Hütten,G. Thomas +8 more
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TLDR
Giant magnetoresistance in heterogeneous thin film Cu-Co alloys consisting of ultrafine Co-rich precipitate particles in a Cu-rich matrix is observed, modeled by including spin-dependent scattering at the interfaces between the particles and the matrix, as well as the spin- dependent scattering in the Co- rich particles.Abstract:
We have observed giant magnetoresistance in heterogeneous thin film Cu-Co alloys consisting of ultrafine Co-rich precipitate particles in a Cu-rich matrix. The magnetoresistance scales inversely with the average particle diameter. This behavior is modeled by including spin-dependent scattering at the interfaces between the particles and the matrix, as well as the spin-dependent scattering in the Co-rich particles.read more
Citations
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Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films
TL;DR: A negative isotropic magnetoresistance effect has been observed in thin oxide films of perovskite-like La0.67Ca0.33MnOx, which could be useful for various magnetic and electric device applications if the observed effects of material processing are optimized.
Journal ArticleDOI
REVIEW ARTICLE: Colossal magnetoresistance
TL;DR: In this paper, the authors review recent experimental work falling under the broad classification of colossal magnetoresistance (CMR), which is magnetoreduction associated with a ferromagnetic-toparamagnetic phase transition.
Journal ArticleDOI
Finite-size effects in fine particles: magnetic and transport properties
Xavier Batlle,Amílcar Labarta +1 more
TL;DR: In this article, a review of the most relevant finite-size and surface effects in the magnetic and transport properties of magnetic fine particles and granular solids is presented, where the stability of the particle magnetization, superparamagnetic regime and the magnetic relaxation are discussed.
Journal ArticleDOI
Magnetoresistance in magnetic manganese oxide with intrinsic antiferromagnetic spin structure
TL;DR: Giant and isotropic magnetoresistance as huge as −53% was observed in magnetic manganese oxide La0.72Ca0.25MnOz films with an intrinsic antiferromagnetic spin structure as mentioned in this paper.
Journal ArticleDOI
Synthesis of monodisperse cobalt nanocrystals and their assembly into magnetic superlattices (invited)
Shouheng Sun,C. B. Murray +1 more
TL;DR: In this paper, high temperature, solution phase reduction of cobalt chloride in the presence of stabilizing agents was employed to produce magnetic colloids (ferrofluids) of the cobalt nanocrystals.
References
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Journal ArticleDOI
Giant magnetoresistance of (001)Fe/(001)Cr magnetic superlattices.
Mario Norberto Baibich,J. M. Broto,Albert Fert,F. Nguyen Van Dau,Frédéric Petroff,P. Etienne,G. Creuzet,A. Friederich,Jean Chazelas +8 more
TL;DR: This work ascribes this giant magnetoresistance of (001)Fe/(001)Cr superlattices prepared by molecularbeam epitaxy to spin-dependent transmission of the conduction electrons between Fe layers through Cr layers.
Journal ArticleDOI
Oscillations in exchange coupling and magnetoresistance in metallic superlattice structures: Co/Ru, Co/Cr, and Fe/Cr.
TL;DR: Mise en evidence d'un interaction d'echange intercouche antiferromagnetique et d'une magnetoconductivite en saturation dans les superreseaux Co/Cr et Co/Ru.
Journal ArticleDOI
Some theoretical aspects of rock-magnetism
TL;DR: In this paper, a brief theoretical study of the most typical magnetic properties of rocks is devoted to the magnetic viscosity due to thermal agitation in small grains and in larger ones.
Journal ArticleDOI
Theory of giant magnetoresistance effects in magnetic layered structures with antiferromagnetic coupling.
Robert E. Camley,Józef Barnaś +1 more
TL;DR: Description theorique simple des effets de magnetoresistance geante mesures recemment dans les structures Fe/Cr en couches dans la diffusion des electrons suivant la direction de leur spin.
Journal ArticleDOI
Diffraction contrast from spherically symmetrical coherency strains
Michael F. Ashby,L. M. Brown +1 more
TL;DR: In this article, the properties of images formed by diffraction contrast in thin metal foils viewed by transmission electron microscopy are studied by means of the dynamical theory of diffraction, including absorption.