TY - JOUR
T1 - The magnetic, electrical and structural properties of copper-permalloy alloys
AU - Qader, Makram A.
AU - Vishina, Alena
AU - Yu, Lei
AU - Garcia, Cougar
AU - Singh, Rakesh
AU - Rizzo, N. D.
AU - Huang, Mengchu
AU - Chamberlin, Ralph
AU - Belashchenko, K. D.
AU - van Schilfgaarde, Mark
AU - Newman, Nathan
N1 - Funding Information:
This work was supported by IARPA through Contract N66001-12-C-2020. MvS was supported by EPSRC CCP9 Flagship Project No. EP/M011631/1. RVC was supported by the ARO through grant No. W911NF-11-1-0419. The use of facilities in the LeRoy Eyring Center for Solid State Science at Arizona State University is acknowledged.
Publisher Copyright:
© 2017 The Authors
PY - 2017/11/15
Y1 - 2017/11/15
N2 - Copper-permalloy [Cu1−x(Ni80Fe20)x] alloy films were deposited by co-sputtering and their chemical, structural, magnetic, and electrical properties were characterized. These films are found to have favorable weak ferromagnetic properties for low temperature magnetoelectronic applications. Our results show that by varying the composition, the saturation magnetization (Ms) can be tuned from 700 emu/cm3 to 0 and the Curie temperature (Tc), can be adjusted from 900 K to 0 K. The Ms and Tc are found to scale linearly between x = 25% and 100%. Electronic structure calculations are used to provide a strong fundamental understanding of the mechanisms responsible for establishing the observed electrical and magnetic properties. The theoretical results also show that the introduction of Cu into the permalloy lattice results in very strong spin scattering in the minority spin channel, with only moderate interactions in the majority channel.
AB - Copper-permalloy [Cu1−x(Ni80Fe20)x] alloy films were deposited by co-sputtering and their chemical, structural, magnetic, and electrical properties were characterized. These films are found to have favorable weak ferromagnetic properties for low temperature magnetoelectronic applications. Our results show that by varying the composition, the saturation magnetization (Ms) can be tuned from 700 emu/cm3 to 0 and the Curie temperature (Tc), can be adjusted from 900 K to 0 K. The Ms and Tc are found to scale linearly between x = 25% and 100%. Electronic structure calculations are used to provide a strong fundamental understanding of the mechanisms responsible for establishing the observed electrical and magnetic properties. The theoretical results also show that the introduction of Cu into the permalloy lattice results in very strong spin scattering in the minority spin channel, with only moderate interactions in the majority channel.
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U2 - 10.1016/j.jmmm.2017.06.081
DO - 10.1016/j.jmmm.2017.06.081
M3 - Article
AN - SCOPUS:85021068184
SN - 0304-8853
VL - 442
SP - 45
EP - 52
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
ER -