RT journal article
T1 Exchange bias and two steps magnetization reversal in porous Co/CoO layer
A1 Ovejero, Jesús G.
A1 Godinho, Vanda
A1 Lacroix, Bertrand
A1 García, Miguel A.
A1 Hernando, Antonio
A1 Fernández, Asunción
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Co
K1 Porous
K1 Double loop
K1 Exchange bias
AB In this paper Co/CoO thick layers (hundreds of nanometers) of different porosity and oxidation degree were prepared in a magnetron sputtering deposition process by tailoring the DC sputtering power, as well as the processgas and target composition. The control of the synthesis parameters allowed the nanostructuration of the filmswith a singular distribution of closed pores and a controlled amount of CoO. We observed an exchange biasfield of 2.8 KOe for porous Co/CoO composites, similar to Co/CoO bilayers but for coatings thicker than 300 nm.Besides, it was observed that the coating presents bistable magnetic features when cooled under zero field conditions as a result of the unusual exchange coupling.
PB Elsevier
SN 0264-1275
YR 2019
FD 2019-06
LK http://hdl.handle.net/10498/21206
UL http://hdl.handle.net/10498/21206
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 15-nov-2026