PermeabilityImpedancePorous metalsThis paper presents a method, which simultaneously estimates the electrical conductivity and magnetic permeability of porous metals. Porous Cu and Fe manufactured by the lost carbonate sintering process have been tested. An air-cored solenoid coil was designed for the ...
The effective magnetic permeability mu and effective dielectric constant epsilon are two equally important quantities for the characterization of electromagnetic properties of composites. For granular ferromagnetic metals, however, the presence of permanent magnetic moments means that the Maxwell-Garnett theory...
If a material is placed in a magnetic field (H), the magnetic inductance (B), which is a measure of the density of magnetic lines of force within the material, is given by (7.3)B=H+4πM where M is the magnetization of the material per unit volume. The magnetic permeability (µ)...
Figure 3a shows the excellent ferromagnetic properties of a magnetic sheath with the residual magnetization Mr, coercivity Hc, and relative permeability of 34 emu/g, 710 mT, and 1.02, respectively. Thus, the MME fiber/structure can be magnetized to saturation with a pulsed magnetic field (...
Soft magnetic materials with stable permeability up to hundreds of megahertz (MHz) are urgently needed for integrated transformers and inductors, which are crucial in the more-than-Moore era. However, traditional frequency-stable soft magnetic ferrites s
The magnetic properties of metals and alloys are closely related to their microstructures. For the austenitic stainless 690—VOLUME 28A, MARCH 1997 METALLURGICAL AND MATERIALS TRANSACTIONS A Table I. Effect of Alloying Elements on the Magnetic Permeability of Copper-Zinc Alloys Specification Reference...
RESULTS Effects of SMF with and without NaCl and PEG 6000 on Pigment Contents The combined effects of SMF and NaCl or PEG 6000 on pigment contents are given in Table 1. Chl (a + b, a, and b) and CAR contents increased sig nificantly under SMF conditions (P < 0.05). However, ...
10.2 Testing shall consist of impedance permeability measurement and shall be conducted using Test Method A 772. 10.3 The ac magnetic property requirements after appropriate heat treatment are shown in Table 3. 3 10.3.1 For thicknesses not listed, the requirements shall be determined by linear ...
Substitution of expression for M makes B = μH, where μ = μ0(1 +χ) is the magnetic permeability of matter. The entire information about susceptibility of an object and how it is related to the B, or B0 as it is called in MR imaging, is lumped into μ through χ. Modulation of...
where x is the relative distance between magnets, μ0 is the permeability of free space (4 π·10− 7 N/A2), M is the magnetization, and r and t are the radius and the height of cylinders, respectively. Diamagnetic levitation is the working principle of the second type of magnetic su...