Structure and properties of Zn-doped CoFe2O4 thin films via a sol–gel method

• Published in: Journal of electroceramics Vol. 21; no. 1-4; pp. 686 - 689
• Main Authors: He, Hong-cai, Ying, Ming-hao, Zhou, Jian-ping, Nan, Ce-Wen
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Boston Springer US 01.12.2008; Springer; Springer Nature B.V
• Subjects: Annealing; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystallography and Scattering Methods; Electrochemistry; Exact sciences and technology; Glass; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Materials Science; Natural Materials; Optical and Electronic Materials; Physics; Thin films; Thin films; Magnetization; Sol–gel; Cobalt ferrite; Coercivity; Scanning electron microscopy; Annealing; Zinc additions; Sol-gel; Crystallization; Doping; Ferrites; Coercive force; Magnetization . Coercivity; Cobalt ferrite . Thin films; Sol-gel process; Saturation magnetization; Magnetic properties
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-007-9268-2

Zn-doped cobalt ferrite Co 0.9 Zn 0.1 Fe 2 O 4 (CZFO) films with the spinel structure were fabricated on Pt(111)/Ti/SiO 2 /Si(100) using a sol-gel method, and the effect of annealing temperature and time on structure and magnetic properties of the CZFO thin films were investigated. The coercivity and saturation magnetization of the films are not sensitive to annealing time, and increase with a rise in the annealing temperature below 800 °C. The CZFO thin films annealed at 800 °C show the best crystallization and the highest coercivity (3.5 kOe), and above 800 °C, the coercivities of the films decrease as a result of formation of multi-domains, while the saturation magnetization comes to stable.