Abstract
Perpendicular magnetic anisotropy (PMA) was studied at low temperature (T=30 K) in dc-magnetron sputtered Ni{sub 60}Cu{sub 40}/Cu multilayers. PMA has been observed in many multilayer structures for ferromagnetic layer thicknesses less than a certain thickness t{sub perpendicular}. In general cases t{sub perpendicular} is less than a few nanometers, making such structures unsuitable for low-cost fabrication techniques. Our results show a strong perpendicular easy direction of magnetization for NiCu layer thickness between 4.2 nm and 34 nm. The thickness t{sub perpendicular} at which the multilayers change the preferential orientation from perpendicular to in-plane is estimated to be 55 nm. Structural studies show that the low magnetostatic energy density is likely to be the main reason for the large t{sub perpendicular} value obtained in this system.
Ruotolo, A;
Bell, C;
Leung, C W;
Blamire, M G;
[1]
Department of Materials Science and Metallurgy and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)]
- INFM and Dipartimento Scienze Fisiche, Universita di Napoli Federico II, Piazzale Tecchio 80-80125 Naples (Italy)
Citation Formats
Ruotolo, A, Bell, C, Leung, C W, Blamire, M G, and Department of Materials Science and Metallurgy and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)].
Perpendicular magnetic anisotropy and structural properties of NiCu/Cu multilayers.
United States: N. p.,
2004.
Web.
doi:10.1063/1.1757658.
Ruotolo, A, Bell, C, Leung, C W, Blamire, M G, & Department of Materials Science and Metallurgy and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)].
Perpendicular magnetic anisotropy and structural properties of NiCu/Cu multilayers.
United States.
https://doi.org/10.1063/1.1757658
Ruotolo, A, Bell, C, Leung, C W, Blamire, M G, and Department of Materials Science and Metallurgy and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)].
2004.
"Perpendicular magnetic anisotropy and structural properties of NiCu/Cu multilayers."
United States.
https://doi.org/10.1063/1.1757658.
@misc{etde_20619019,
title = {Perpendicular magnetic anisotropy and structural properties of NiCu/Cu multilayers}
author = {Ruotolo, A, Bell, C, Leung, C W, Blamire, M G, and Department of Materials Science and Metallurgy and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)]}
abstractNote = {Perpendicular magnetic anisotropy (PMA) was studied at low temperature (T=30 K) in dc-magnetron sputtered Ni{sub 60}Cu{sub 40}/Cu multilayers. PMA has been observed in many multilayer structures for ferromagnetic layer thicknesses less than a certain thickness t{sub perpendicular}. In general cases t{sub perpendicular} is less than a few nanometers, making such structures unsuitable for low-cost fabrication techniques. Our results show a strong perpendicular easy direction of magnetization for NiCu layer thickness between 4.2 nm and 34 nm. The thickness t{sub perpendicular} at which the multilayers change the preferential orientation from perpendicular to in-plane is estimated to be 55 nm. Structural studies show that the low magnetostatic energy density is likely to be the main reason for the large t{sub perpendicular} value obtained in this system.}
doi = {10.1063/1.1757658}
journal = []
issue = {1}
volume = {96}
journal type = {AC}
place = {United States}
year = {2004}
month = {Jul}
}
title = {Perpendicular magnetic anisotropy and structural properties of NiCu/Cu multilayers}
author = {Ruotolo, A, Bell, C, Leung, C W, Blamire, M G, and Department of Materials Science and Metallurgy and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)]}
abstractNote = {Perpendicular magnetic anisotropy (PMA) was studied at low temperature (T=30 K) in dc-magnetron sputtered Ni{sub 60}Cu{sub 40}/Cu multilayers. PMA has been observed in many multilayer structures for ferromagnetic layer thicknesses less than a certain thickness t{sub perpendicular}. In general cases t{sub perpendicular} is less than a few nanometers, making such structures unsuitable for low-cost fabrication techniques. Our results show a strong perpendicular easy direction of magnetization for NiCu layer thickness between 4.2 nm and 34 nm. The thickness t{sub perpendicular} at which the multilayers change the preferential orientation from perpendicular to in-plane is estimated to be 55 nm. Structural studies show that the low magnetostatic energy density is likely to be the main reason for the large t{sub perpendicular} value obtained in this system.}
doi = {10.1063/1.1757658}
journal = []
issue = {1}
volume = {96}
journal type = {AC}
place = {United States}
year = {2004}
month = {Jul}
}