Title :
Magneto-Transport Phenomena in Nanolayered [FeCoNiB/Co/Cu/Co]·n Thin Films
Author :
Urse, M. ; Chiriac, M.H. ; Grigoras, M.
Author_Institution :
Nat. Inst. of R&D for Tech. Phys., Iasi
Abstract :
Some results concerning the magneto-transport properties of the nanolayered [FeCoNiB/Co/Cu/Co] n thin films, in view of their utilization for manufacturing the small magnetic field sensors are presented. The [FeCoNiB/Co/Cu/Co] n thin films exhibit suitable values of the magnetoresistive characteristics and a good thermal stability. The magnetoresistive properties are discussed in relation with the deposition and annealing conditions and surface roughness of the substrate and the initial magnetic layer. The Cu(5nm)/[FeCoNiB(7.5nm)/Co(0.5nm)/Cu(1nm)/Co (0.5nm)/] 20 spin valve system annealed at 250 degC, exhibits a R/R value of about 5.7 %, a maximum magnetic field sensitivity in resistance value of about 0.9 % per Oersted and a good thermal stability of the electrical properties
Keywords :
annealing; cobalt alloys; galvanomagnetic effects; iron alloys; magnetic thin films; magnetoresistance; nickel alloys; spin valves; surface roughness; thermal stability; 250 C; FeCoNiB-Co-Cu-Co; Spacer layer; annealing conditions; electrical properties; good thermal stability; magnetic field sensitivity; magnetic field sensors; magneto-transport phenomena; magneto-transport properties; magnetoresistive characteristics; multilayer structures; nanolayered thin films; spin valve system; surface roughness; Annealing; Magnetic films; Magnetic properties; Magnetic sensors; Magnetoresistance; Manufacturing; Thermal resistance; Thermal stability; Thin film sensors; Transistors; Magneto-transport properties; Multilayer structures; Nanolayered thin film; Spacer layer;
Conference_Titel :
International Semiconductor Conference, 2006
Conference_Location :
Sinaia
Print_ISBN :
1-4244-0109-7
DOI :
10.1109/SMICND.2006.283934
