Title :
Negative Permeability Spectra of Magnetic Materials
Author :
Tsutaoka, Takanori ; Kasagi, Teruhiro ; Hatakeyama, Kenichi ; Fujimoto, Kyouhei
Author_Institution :
Grad. Sch. of Educ., Hiroshima Univ. Higashi-Hiroshima, Hiroshima
Abstract :
We have studied the complex permeability spectra of yttrium iron garnet (YIG) under external magnetic field and permalloy composite materials, in which the heat treated peramalloy particles were embedded, in the microwave region to realize the negative permeability which is produced by the magnetic resonance. In this report, we discuss the characteristics of the negative permeability of these materials and possibility of a small microwave antenna device using the negative permeability characteristics of magnetic materials.
Keywords :
Permalloy; composite materials; magnetic materials; magnetic permeability; microwave antennas; complex permeability spectra; magnetic materials; microwave antenna device; negative permeability spectra; permalloy composite materials; yttrium iron garnet; Composite materials; Electromagnetic heating; Garnets; Iron; Magnetic fields; Magnetic materials; Magnetic resonance; Microwave devices; Permeability; Yttrium;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on
Conference_Location :
Chiba
Print_ISBN :
978-1-4244-1522-9
DOI :
10.1109/IWAT.2008.4511336
