Microwave absorption studies of W-hexaferrite prepared by co-precipitation/mechanical milling

• Published in: Journal of magnetism and magnetic materials Vol. 265; no. 2; pp. 119 - 122
• Main Authors: Yang, Yi, Zhang, Baoshan, Xu, Weidong, Shi, Yingbing, Zhou, Ningsheng, Lu, Huaixian
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.2003; Elsevier Science
• Subjects: Complex permeability; Complex permittivity; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Fine-particle systems; Magnetic properties and materials; Microwave absorption; Physics; Small particles and nanoscale materials; Studies of specific magnetic materials; W-hexaferrite; 75.40.Gb; 75.30.G; Microwave absorption; W-hexaferrite; 41.20.Gz; 75.50.T; Complex permeability; Complex permittivity; Hexagonal ferrites; Inorganic compounds; Transition element compounds; Cobalt oxides; Permeability; Experimental study; Mechanical alloying; Wave reflection; Hexagonal lattices; Zinc oxides; Magnetic particles; Multi-element compounds; Composite materials; 75.40.Gb Complex permeability; Barium oxides; Permittivity; Coprecipitation
• ISSN: 0304-8853
• DOI: 10.1016/S0304-8853(03)00237-3

W-hexaferrite particles (Ba(Co 0.5Zn 0.5) 2Fe 16O 27) have been successfully synthesized using a combination of co-precipitation and mechanical milling. These particles possess excellent hexagonal shape and are well separated from one another. The complex permeability and complex permittivity of ferrite–epoxy composite have been measured in the frequency range of 2–18 GHz. Based on the theoretical calculation of reflection loss, the microwave absorption properties of the ferrite–epoxy composite have been investigated. The result indicates that these ferrite particles have significant potential for microwave absorption applications in the future.