Patent ID: 11894564
Assignee: KING FAISAL UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A method of preparing cobalt and copper-doped nickel ferrite nanoparticles, comprising:
preparing a gel including iron nitrate, cobalt nitrate, nickel nitrate, copper nitrate, and a capping agent;
drying the gel to provide a dried gel, wherein drying the gel comprises heating the gel to a temperature ranging from about 90° C. to about 110° C. for a period of time ranging from about 8 hours to about 12 hours;
burning the dried gel to provide a brittle mass, wherein burning the dried gel includes heating the dried gel at a temperature ranging from about 165° C. to about 175° C. for a period of time ranging from about 30 minutes to about 2 hours;
reducing the brittle mass to a powder; and
calcining the powder to provide cobalt and copper-doped nickel ferrite nanoparticles, wherein the powder is calcined for about two hours to about five hours at a temperature ranging from about 400° C. to about 450° C.