Title :
Low field magnetization in CoFe-Al/sub 2/O/sub 3/ multilayers
Author :
Kakazei, G.N. ; Santos, J.M. ; Pogorelov, Yu.G. ; Sousa, J.B. ; Freitas, P.P. ; Cardoso, S. ; Lesnik, N.A. ; Wigen, P.E.
Author_Institution :
Dept. of Phys., Porto Univ., Portugal
Abstract :
Summary form only given. In a series of ion-beam deposited metal-insulator CoFe(t)/Al/sub 2/O/sub 3/(30 /spl Aring/) multilayers, ranging from discontinuous insulating (t = 9 /spl Aring/) to continuous metallic (t = 25 /spl Aring/) behavior, SQUID magnetization measurements, both zero-field-cooled (ZFC) and field-cooled (FC), were done on a total of 9 samples, over temperatures T from 8 to 300 K and in applied magnetic fields H from 10 to 100 Oe. The data permit an extraction of the basic characteristics of different magnetic phases present, in some cases coexisting, in this system.
Keywords :
alumina; cobalt alloys; iron alloys; magnetic multilayers; magnetisation; 8 to 300 K; CoFe-Al/sub 2/O/sub 3/; SQUID measurement; field-cooled state; ion beam deposition; low-field magnetization; magnetic phase; metal-insulator multilayer; zero-field-cooled state; Magnetic field measurement; Magnetic multilayers; Magnetic properties; Magnetization; Metal-insulator structures; Physics; SQUIDs; Scanning probe microscopy; Temperature dependence; Temperature distribution;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001474
