Showing papers on "Colossal magnetoresistance published in 1989"
TL;DR: The electrical resistivity of Fe-Cr-Fe layers with antiferromagnetic interlayer exchange increases when the magnetizations of the Fe layers are aligned antiparallel, much stronger than the usual anisotropic magnetoresistance.
Abstract: The electrical resistivity of Fe-Cr-Fe layers with antiferromagnetic interlayer exchange increases when the magnetizations of the Fe layers are aligned antiparallel. The effect is much stronger than the usual anisotropic magnetoresistance and further increases in structures with more than two Fe layers. It can be explained in terms of spin-flip scattering of conduction electrons caused by the antiparallel alignment of the magnetization.
3,715 citations
TL;DR: In this paper, magnetoresistance data up to 20 T and magnetisation measurements on the mixed-valence cubic perovskite semiconductor Nd 05 Pb 05 MnO 3 were presented, which demonstrated that the material orders ferromagnetically below 184 K and that around and above this temperature the conductivity is dominated by hopping of localized magnetic polarons, with an activation energy ∼95 meV.
Abstract: We present magnetoresistance data up to 20 T and magnetisation measurements on the mixed-valence cubic perovskite semiconductor Nd 05 Pb 05 MnO 3 , which demonstrate that the material orders ferromagnetically below 184 K, and that around and above this temperature the conductivity is dominated by hopping of localized magnetic polarons, with an activation energy ∼95 meV
580 citations
TL;DR: In this article, the behavior of negative magnetoresistance and the hysteresis of the magnetoreduction has been observed in the multiphase samples of Bi1.6Pb0.4Ca2Sr2Cu3Oy.
Abstract: The behavior of negative magnetoresistance and the hysteresis of the magnetoresistance has been observed in the multiphase samples of Bi1.6Pb0.4Ca2Sr2Cu3Oy. They vary with applied field, measuring current and temperature. It is suggested that this behavior can be associated with the intergranular weak-link structure of the samples.
10 citations
TL;DR: The transverse magnetoresistance of Ho x Co 70- x B 30 amorphous ribbons in the composition range 0⪕ x ⪕8 was measured in pulsed magnetic fields up to 22 T as mentioned in this paper.
Abstract: The transverse magnetoresistance of Ho x Co 70- x B 30 amorphous ribbons in the composition range 0⪕ x ⪕8 was measured in pulsed magnetic fields up to 22 T. A positive contribution to the magnetoresistance was found in all investigated alloys. The results are interpreted in terms of the band model of magnetism and antiferromagnetic RE-3d exchange interactions.
2 citations