Sol–gel synthesis, magnetic and magneto-optical properties of CoFe2~xTbxO4 nanocrystalline films
Abstract
The nanocrystalline thin films of terbium-doped cobalt ferrite were fabricated by a sol–gel method, and the e§ects of
crystallization conditions on the phase, morphology, magnetic and magneto-optical (MO) properties of products were
investigated. Due to its large radius, the doping content, x, of Tb3` ion inside cobalt spinel cannot exceed 0.2. The
CoFe
2~xTbxO
4
films consist of the grains with the average size smaller than 50 nm even annealed up to 800°C.
Saturation magnetization, coercive force and MO rotation are strongly dependent on the annealing temperature.
( 1999 Elsevier Science B.V. All rights reserved.
PACS: 81.20.F; 75.50.K; 75.50.G; 75.70.A
Keywords: Sol–gel synthesis; Cobalt spinel; Nanocrystalline films; Magneto-optical recording英语论文网 【http://www.51lunwen.org】
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