New achievements in high-frequency permeability measurements of magnetic materials

Copper vs. iron: Microwave magnetism in the metamaterial age

“…A square sample with W ¼ 9 mm could thus be manufactured. The permeability m ferro of the original film and the permeability m meta of the metamaterial sample were measured using a permeameter described elsewhere [43]. The experimental results are reported in Fig.…”

Engineering, Modeling and Testing of Composite Absorbing Materials for EMC Applications

“…The existing techniques are typically based on various transmission/reflection measurements, either in the frequency domain, or in time domain, in transmission lines, cavities, open space, or using special probes terminated with material samples under test. The literature is replete with various measurement techniques (Nicholson & Ross, 1970;Fellner-Feldegg, 1972;Weir, 1974;BakerJarvis, et al, 1993BakerJarvis, et al, , 2001Musil & Zacek, 1986;Ghodgaonkar et al, 1990;Zheng & Smith, 1991;Ganchev et al, 1995;Jargon & Janezic, 1996;Wang et al, 1998;Roussy et al 2004;Ledieu & Acher, 2003;Bekker et al, 2004). For practical EMC purposes, it is convenient to have systematic methodology to help EMC engineers to design and evaluate effectiveness of EMI noise-suppressing materials and structures based on their measured dielectric and magnetic responses.…”

Measurement of Complex Permeability Using Short Coaxial Line Reflection Method

“…These materials have many useful properties, are versatile, and require many measurements for their characterization. There is large number of papers which represent demagnetizing effect, the effect of stress and the temperature effect of NiZn ferrite, [1][2][3]. The intrinsic complex permeability is the critical parameter for the optimization design, especially in the high-frequency applications.…”