TY - JOUR
KW - Decomposition
KW - Nickel alloys
KW - Ferromagnetism
KW - Iron alloys
KW - Magnetic properties
KW - Phase interfaces
KW - Magnetic field effects
KW - Thermal effects
KW - Deformation
KW - Electric conductivity of solids
KW - Metallic superlattices
KW - Metallographic microstructure
KW - Copper nickel iron alloy
KW - Giant magnetoresistance
KW - Spin dependent scattering
KW - Copper alloys
AU - L.H Chen
AU - T.H Tiefel
AU - S Jin
AU - Ramamoorthy Ramesh
AB - The creation of a giant magnetoresistance (GMR) effect in a spinodally decomposed and deformed Cu-20% Ni-20% Fe alloy is reported. The alloy is processed to contain a locally multilayered superlattice-like structure with alternating ferromagnetic and nonmagnetic layers with a size scale of 10–20 A. The microstructural modification produced a dramatic improvement in room-temperature magnetoresistance ratio from —0.6 to —5%. The observed magnetoresistance is most likely related to the spin-dependent scattering at the two-phase interface and in the ferromagnetic phase, although the exact mechanism involved may be qualitatively different from the usual GMR picture. A rather unusual temperature-dependence of magnetoresistance ratio, i.e., the room-temperature value being greater than that at 4.2 K, was found. © 1994, Materials Research Society. All rights reserved.
BT - Journal of Materials Research
DO - 10.1557/JMR.1994.1134
LA - eng
M1 - 5
N1 - cited By 5
N2 - The creation of a giant magnetoresistance (GMR) effect in a spinodally decomposed and deformed Cu-20% Ni-20% Fe alloy is reported. The alloy is processed to contain a locally multilayered superlattice-like structure with alternating ferromagnetic and nonmagnetic layers with a size scale of 10–20 A. The microstructural modification produced a dramatic improvement in room-temperature magnetoresistance ratio from —0.6 to —5%. The observed magnetoresistance is most likely related to the spin-dependent scattering at the two-phase interface and in the ferromagnetic phase, although the exact mechanism involved may be qualitatively different from the usual GMR picture. A rather unusual temperature-dependence of magnetoresistance ratio, i.e., the room-temperature value being greater than that at 4.2 K, was found. © 1994, Materials Research Society. All rights reserved.
PY - 1994
SP - 1134
EP - 1139
T2 - Journal of Materials Research
TI - Magnetoresistance in a deformed Cu-Ni-Fe alloy with ultrafine multilayer structure
VL - 9
SN - 08842914
ER -