ENERGY DENSITY SPECTRUM AND AUTOCORRELATION FUNCTION OF ANOMALIES DUE TO SIMPLE MAGNETIC MODELS*Formulae of the energy spectrum and autocorrelation function have been derived for magnetic anomalies due to four classes of bodies which can be represented in turn by (a) poles, (b) line of poles, (...
Magnet typeMagnetic energyBHmax(kJ/m3)1986 ($/kg)Density (kg/m3)Cost/joule ($/J) Hard ferrite291244001.8 Alnico453072004.9 SmCo220335820012.5 NdFeB29033574008.5 Analogous to the Sm–Co magnet, the price of Nd–Fe–B is expected to decrease and may fall below $100/kg. The cost per joule...
For example, the bulk of a 3D TI is characterized by a quantized axionic magnetoelectric response governed by a Lagrangian density [Math Processing Error]LEM∝θE⋅B in which the axion angle θ is pinned to the nontrivial value θ mod 2π = π by [Math Processing Error]{T|0} ...
Magnetic force densities are computed by differentiation of the magnetic energy density distribution obtained by finite-element analysis. The computed forces on small permeable particles are shown to agree reasonably well with a classical formula by Oberteuffer. The method is applied to both planar sep...
The last term, Mhklε2, is elastic strain energy density, ε is intrinsic residual strain, and Mhkl is the biaxial modulus, which is closely related to the crystallographic direction. It should be noted that we used an amorphous SiO2/Si substrate, and therefore, γi can be neglected. ...
The Fermi contact term, which in most iron-containing materials is dominant, results from the interaction between the nuclear magnetic moment and the unpaired electron spin density at the nucleus. The dipolar and orbital terms represent the dipolar interaction between the nuclear magnetic moment and ...
PROBLEM TO BE SOLVED: To obtain an energy consumption type product free from hot rolling ear cracking and having high magnetic flux density by specifying the compsn., hot rolling conditions, compositional balance, annealing conditions, oxygen coating weight after annealing, the ratio of FeO/SiO<Sub...
energy current electricity laws of physics ohm's law newton's laws of motion archimedes principle doppler effect kirchhoff's law law of reflection ampere's law faraday's law bernoulli's principle lenz's law si unit list unit of pressure viscosity unit unit of power density units unit of ...
Note that, albeit the energy barrier being rather large, the hysteresis loops are practically close at zero field, strongly indicating that QTM is rather efficient, as commonly observed in lanthanide-based SMMs. To gain deeper insight into the relaxation mechanism and the anisotropic magnetic ...
Based on the calculation by the first-principles density functional theory of the substitution energy of In3+ cations in SrFe12O19 and the formation probability analysis, it was concluded that the substituted In3+ cations in SrFe12−xInxO19 occupy the 12 k, 4fVI, and 4fIV positions. The...