Course of theoretical physics: Electrodynemics of continuous media |
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Page 138
For uniaxial and biaxial crystals, the expansion of the anisotropy energy begins
with squares of these components, and may be written Uaniso = Kt: mimkt 140- 1)
where K ,-, is a symmetrical tensor of rank two, whose components, like U ,,,,s,, ...
For uniaxial and biaxial crystals, the expansion of the anisotropy energy begins
with squares of these components, and may be written Uaniso = Kt: mimkt 140- 1)
where K ,-, is a symmetrical tensor of rank two, whose components, like U ,,,,s,, ...
Page 143
Since H, = 0 everywhere, the mean induction is therefore ___ ___ 2 B,,=r1,,(1+%)
, B,<41¢\/(M1-1;'; (41.7) These formulae give the range of values of the mean
induction corresponding to the domain structure of a uniaxial ferromagnet.
Since H, = 0 everywhere, the mean induction is therefore ___ ___ 2 B,,=r1,,(1+%)
, B,<41¢\/(M1-1;'; (41.7) These formulae give the range of values of the mean
induction corresponding to the domain structure of a uniaxial ferromagnet.
Page 339
Optical properties of uniaxial crystals The optical properties of a crystal depend
primarily on the symmetry of its dielectric tensor 8",. In this respect all crystals fall
under three types: cubic, uniaxial and biaxial (see §13). In a crystal of the cubic ...
Optical properties of uniaxial crystals The optical properties of a crystal depend
primarily on the symmetry of its dielectric tensor 8",. In this respect all crystals fall
under three types: cubic, uniaxial and biaxial (see §13). In a crystal of the cubic ...
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angle anisotropy anisotropy energy antiferromagnetic atoms axes axis body boundary conditions calculation charge circuit coefficient coefficients components conductor constant coordinates corresponding cross-section crystal Curie point curl H defined definition denote dependence derivatives determined dielectric diffraction direction discontinuity dissipation domains electric field electromagnetic field electrons ellipsoid energy flux expression external field external magnetic field ferroelectric ferromagnet field H find finite first first term flow fluctuations fluid formula free energy frequency function given gives grad Hence incident induction infinite integral isotropic Landau theory layer linear magnetic field magnetohydrodynamics magnetostriction magnitude medium normal obtain optical particle permittivity perpendicular perturbation phase plane polarization PROBLEM propagated properties pyroelectric quantities reflection refraction relation respect result rotation satisfied scattering shock wave significance solution sphere superconducting surface symmetry tangential temperature tensor theory thermodynamic potential transition uniaxial upper half-plane values variable velocity volume wave vector z-axis zero