Preparation of NiFe/sub 2/O/sub 4/ thin films by a new route sol-gel

Author

Santos, J.V.A. ; Duque, J.G.S. ; Sasaki, J.M. ; Junior, E.A.S. ; Macedo, M.A.

Author_Institution

Univ. Fed. de Sergipe, Sao Cristovao, Brazil

fYear

2002

Abstract

Summary form only given. We describe a new route of preparation of NiFe/sub 2/O/sub 4/ thin films, utilizing a sol-gel process which uses coconut water as the solvent for metal salts. This new route has obtained good results in the preparation of CoFe/sub 2/O/sub 4/ thin films by Duque et al. (2000; 2001). Stoichiometric quantities of Fe(NO/sub 3/)/sub 3/.9H/sub 2/O and Ni(NO/sub 3/)/sub 2/.6H/sub 2/O were dissolved in filtered coconut water and a sol was obtained. The crystalline phases were identified by X-ray powder diffraction measurements. The magnetic properties were determined at room temperature by applying magnetic fields up to 4 kOe perpendicular to the surface of the samples by means of a SQUID magnetometer.

Keywords

X-ray diffraction; ferrites; magnetic thin films; magnetisation; nickel compounds; sol-gel processing; Fe(NO/sub 3/)/sub 3/-H/sub 2/O; Ni(NO/sub 3/)/sub 2/-H/sub 2/O; NiFe/sub 2/O/sub 4/; NiFe/sub 2/O/sub 4/ thin film; X-ray powder diffraction; coconut water; crystalline phases; magnetic properties; magnetization; sol-gel preparation; Crystallization; Magnetic field measurement; Magnetic properties; Magnetic separation; Phase measurement; Powders; Solvents; Temperature; Transistors; X-ray diffraction;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/INTMAG.2002.1001074

Filename

1001074