METRICA, l’archivio istituzionale della produzione scientifica dell’Istituto Nazionale di Ricerca Metrologica, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ente.
METRICA utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishA cobalt-copper top spin valve was prepared by thermal evaporation of a stack of ferromagnetic thin films separated by thin layers of the diamagnetic metal, with a cap layer containing an antiferromagnetic (AFM) exchange-biasing material. A nonconventional top AFM layer was used, in order to optimize the multilayer roughness and to avoid electrical interference with metallic layers; it consists of a composite material easily processed by means of optical lithography, basically a polymeric matrix composite with a dispersion of nickel oxide microparticles. Magnetization and magnetoresistance measurements were performed from 4 to 300 K. The measurements of both quantities indicate random pinning action of the top AFM layer, resulting in a small exchange-bias field and in asymmetric magnetization and magnetoresistance curves. A simple model explains the observed physical effects.
Thermally evaporated Cu-Co top spin vale with random exchange bias / Chiolerio A; Allia P; Chiodoni A; Pirri F; Celegato F; Coisson M. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 101(2007), pp. 123915-1-123915-6. [10.1063/1.2749289]
| Titolo: | Thermally evaporated Cu-Co top spin vale with random exchange bias | |
| Autori: | ||
| Data di pubblicazione: | 2007 | |
| Rivista: | ||
| Citazione: | Thermally evaporated Cu-Co top spin vale with random exchange bias / Chiolerio A; Allia P; Chiodoni A; Pirri F; Celegato F; Coisson M. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 101(2007), pp. 123915-1-123915-6. [10.1063/1.2749289] | |
| Abstract: | A cobalt-copper top spin valve was prepared by thermal evaporation of a stack of ferromagnetic thin films separated by thin layers of the diamagnetic metal, with a cap layer containing an antiferromagnetic (AFM) exchange-biasing material. A nonconventional top AFM layer was used, in order to optimize the multilayer roughness and to avoid electrical interference with metallic layers; it consists of a composite material easily processed by means of optical lithography, basically a polymeric matrix composite with a dispersion of nickel oxide microparticles. Magnetization and magnetoresistance measurements were performed from 4 to 300 K. The measurements of both quantities indicate random pinning action of the top AFM layer, resulting in a small exchange-bias field and in asymmetric magnetization and magnetoresistance curves. A simple model explains the observed physical effects. | |
| Handle: | http://hdl.handle.net/11696/31129 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11696/31129
Copyright © 2021