Complex permeability and permittivity, and microwave absorption studies of Ca(CoTi)xFe12−2xO19 hexaferrite composites in X-band microwave frequencies

Autor:	V. K. Babbar, Archana Razdan, Subodh Srivastava, R. K. Puri, Praveen Singh
Rok vydání:	1999
Předmět:	Permittivity Materials science Mechanical Engineering Reflection loss X band Dielectric engineering.material Condensed Matter Physics Coating Mechanics of Materials Permeability (electromagnetism) engineering General Materials Science Dielectric loss Composite material Microwave
Zdroj:	Materials Science and Engineering: B. 67:132-138
ISSN:	0921-5107
DOI:	10.1016/s0921-5107(99)00328-1
Popis:	The microwave absorption studies of hexaferrite composites prepared with [Ca(CoTi)xFe12−2xO19]96.0[La2O3]4.0 (x varying from 0.0 to 1.0 in steps of 0.2) were made in the frequency range from 8.0 to 12.4 GHz. The reflection loss has been studied as a function of frequency, composition and thickness of coating. The relationship of reflection loss with complex permeability (μ′−jμ″) and dielectric constant (e′−je″) of composites have been investigated in the X-band of microwave frequencies. The theoretically determined matching frequency has been compared with an experimentally measured value at minimum reflection loss. The multifrequency measurements of μ* and e* were made by the reflection/transmission technique.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::722ee7a4f2d17e63f3d8102eb161e191 https://doi.org/10.1016/s0921-5107(99)00328-1 Zobrazit plný text záznamu Full Text from ScienceDirect