123 research outputs found
Giant magnetoresistance in pseudo-binary bulk alloys
No full textHütten A, Handstein A, Eckert D, Muller HK, Schultz L. Giant magnetoresistance in pseudo-binary bulk alloys. IEEE Transactions on Magnetics. 1996;32(5):4695-4697.Giant magnetoresistance (GMR) has been observed in magnetically optimized AlNiCo5 and FeCrCo bulk alloys with amplitudes sizes as much as 3% at 300K and 5% at 10K. In contrast, homogenized FeCrCo samples show the anisotropic magnetoresistance. The field dependence of the GMR amplitude cannot be scaled by a simple function of magnetization due to a strong field dependence beyond saturation
Giant magnetoresistance in Fe-based bulk materials
No full textHütten A, Handstein A, Eckert D, Schafer R, Muller HK. Giant magnetoresistance in Fe-based bulk materials. Sensors and Actuators A Physical. 1997;59(1-3):252-255.The anisotropy of giant magnetoresistance (GMR) has been observed in magnetically optimized AlNiCo5 bulk alloys. The magnetic contribution to the overall resistivity is a function of the direction of the applied current. GMR amplitudes of 3% at 300 K and 5% at 10 K were measured when the current was applied in the direction of the highest number density of ferromagnetic interfaces. In addition, the influence of the initial domain configuration on the GMR amplitude was determined utilizing Kerr microscopy. Furthermore the role of domain wall motion has been evaluated. GMR amplitudes as much as 70% were obtained at 10 K when the sample can freely rotate in the field direction while measuring the magnetoresistance. (C) 1997 Elsevier Science S.A
Composition and temperature dependence of giant magnetoresistance in melt-spun CoxCu100-x ribbons
No full textIdzikowski B, Nenkov K, Handstein A, Hütten A, Muller KH. Composition and temperature dependence of giant magnetoresistance in melt-spun CoxCu100-x ribbons. ACTA PHYSICA POLONICA A. 1997;92(2):307-310.Structure, magnetic properties and magnetoresistance in as-quenched and annealed CoxCu100-x samples were investigated. Homogeneous metastable CoxCu100-x alloys were prepared by the single-roller technique. The maximum value of magnetoresistance is shifted to higher annealing temperatures with increasing measuring temperature. At higher measuring temperatures the magnetoresistance is not saturated in fields as high as 16 T. Susceptibility measurements showed the formation of hcp-structured Co clusters. For small cobalt concentrations there is a transition from giant magnetoresistance to the normal anisotropic magnetoresistance
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Thermal Remagnetization in Nd<sub>2</sub>Fe<sub>14</sub>B Based Permanent Magnets
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Homogeneity range, crystal structure and magnetic properties of the ThMn12-type compounds Gd1−nNdn(Fe,Mo)12 (n=0–1.0)
No full textMicrostructure and Magnetic Properties of Nd<sub>2</sub>Fe<sub>14</sub>B Based Permanent Magnets
No full textInfluence of Fe and Co additions on magnetization and magnetoresistivity of MnAu2 melt-spun alloys
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