Investigation of granular Cu80(Sm0.17Co0.83)10Fe10 ribbons with magnetoresistive properties

Relevant GMR in As-Deposited Co−Ag Electrodeposits: Chronoamperometric Preparation

“…Several methods have been used to prepare granular materials, among them the physical methods have been extensively used. – One of the systems with the largest GMR reported is the Co−Ag granular material, as some previous studies based on the physical deposition of it have revealed. – The Co−Ag system is a very interesting material because of the total immiscibility of both metals, as the phase diagram reveals . Therefore, the immiscibility between cobalt and silver will favor the formation of composites films with sharp interfaces between them, which is desired because intermixing at the magnetic/nonmagnetic limit is not favorable to GMR.…”

“…Several methods have been used to prepare granular materials, among them the physical methods have been extensively used. [5][6][7][8] One of the systems with the largest GMR reported is the Co-Ag granular material, as some previous studies based on the physical deposition of it have revealed. [9][10][11][12][13][14][15] The Co-Ag system is a very interesting material because of the total immiscibility of both metals, as the phase diagram reveals.…”

Microstructure and magnetic properties of Cu90−xCo10Nix–7.5% SmCo5 composite alloys prepared by mechanical alloying and hot pressing

“…It was measured that the physical and mechanical properties of dispersion-strengthened copper alloys are directly related with microstructural features, such as particle volume fraction, size, stability and solubility of these particles in the copper matrix. In addition to very good mechanical properties within a wide range of temperatures, other interesting engineering properties, such as optical, electrical, thermal and magnetic, have been also improved because of the outstanding properties of nanomaterials [13][14][15][16][17][18][19][20][21][22].…”

“…Binary alloy systems with imbedded nano-sized insoluble particles in the matrix can be produced by isothermal annealing of a supersaturated metastable solid solution [25]. There are a great variety of nonequilibrium processing routes for obtaining such solid solutions between metals with low solubility: rapid solidification, sputtering, sol-gel, ion implantation, gas condensation, thermal evaporation, electrodeposition [14][15][16][17][18][19][20]26,27]. Among these methods, the mechanosynthesis from elemental powders by mechanical alloying is one of the most versatile and inexpensive, as is used in all steel automobile compounds processed by Powder Metallurgy [28].…”

“…Nanocrystalline Cu alloys that combine high saturation magnetisation and coercivity with highly conducting matrix can be obtained from the uniform distribution of Co or Fe magnetic particles in the matrix [13][14][15][16][17][18][19][20]. On the other hand, alloys with giant magnetoresistance (GMR) can be obtained from the uniform distribution of magnetic cluster in a non-magnetic metallic matrix [31].…”