Results 251 to 260 of about 185,371 (302)

On Anisotropy of Nuclear Spin‐Diffusion Coefficient

physica status solidi (b), 1988
AbstractThe anisotropy of the spin diffusion coefficient for the simple cubic lattice is investigated. The analysis is based on using the non‐equilibrium statistical operator method. The form of the correlation function, which determines the spin diffusion coefficient, is treated by the momentum method.
E. R. Butkevich, R. Kh. Sabirov
openaire   +1 more source

Ab-initio study of anisotropy and nonuniaxial anisotropy coefficients in Pd nanochains

Chemical Physics Letters, 2013
Orbital moments and magnetocrystalline anisotropies of linear chains, ladder and zigzag belts of Pd are investigated by first-principle calculations. The second- and fourth-order anisotropy coefficients have been determined, and there are generally strong nonuniaxial contributions, yielding a saddle point in the energy landscape of the zigzag nanobelt.
Pankaj Kumar, Ralph Skomski, Priyanka Manchanda, Arti Kashyap   +3 more
openaire   +1 more source

Anisotropy of the backscatter coefficient of formalin-fixed ovine myocardium

The Journal of the Acoustical Society of America, 2007
The objective of this study was to measure the backscatter coefficient of formalin-fixed myocardial tissue as a function of angle of insonification relative to the myocardial fiber direction. Backscatter measurements were performed on eight cylindrical formalin-fixed lamb myocardial specimens and compensated for attenuation and diffraction effects to ...
Min, Yang, Todd M, Krueger, Mark R, Holland, James G, Miller   +3 more
openaire   +2 more sources

Anisotropy of the transfer coefficients in organic semiconductors

Theoretical and Experimental Chemistry, 1970
Within the framework of the kinetic equation, the assumption of the existence of a relaxation tensor Τ is introduced. From the Onsager relationships in the zeroth approximation with respect to the magnetic field it follows that Τ commutes with matrix where v is the velocity of the electron or the hole.
S. I. Kubarev, I. D. Mikhailov
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Estimation of molecular anisotropy coefficients by a dielectric method

Chemical Physics Letters, 1992
Abstract Using three butyl chloride isomers as test compounds, it is shown that the shape of polar molecules determines in a significant manner the dielectric properties of their dilute solutions in non-polar solvents. Taking into account the anisotropy of both the shape and the polarizability of molecules allows one to reach a useful correlation of ...
P. Bonnet, P. Kedziora, J. Jadzyn
openaire   +1 more source

Anisotropy of the selenium diffusion coefficient in bismuth telluride

Journal of Physics and Chemistry of Solids, 2000
Abstract We present results for the anisotropic diffusion coefficient of selenium, isoelectronic impurity, in Bi 2 Te 3 along the solidus. The single crystals were prepared by travelling heater method and they have a high crystalline quality. The experimental conditions permitted us to obtain a definite stoichiometric deviation, and diffusion ...
M Chitroub, S Scherrer, H Scherrer
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Temperature Dependence of Ferromagnetic Uniaxial Anisotropy Coefficients

Journal of Applied Physics, 1962
The problem of a spin one Weiss molecular field Hamiltonian with uniaxial anisotropy is solved exactly. The free energy contains magnetocrystalline anisotropy terms of all even order Legendre polynomials. The P2 coefficient varies as the third power of the magnetization rather well even for fairly large anisotropy, and over the entire temperature range.
openaire   +1 more source

Physical Properties of Elongated Magnetic Particles: Magnetization and Friction Coefficient Anisotropies

ChemPhysChem, 2009
AbstractAnisotropy counts: A brief review of the main physical properties of elongated magnetic particles (EMPs) is presented. The most important characteristic of an EMP is the additional contribution of shape anisotropy to the total anisotropy energy of the particle, when compared to spherical magnetic particles.
Fernando, Vereda, Juan, de Vicente, Roque, Hidalgo-Alvarez   +2 more
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Anisotropy of the seebeck coefficients of bismuth telluride

Advanced Energy Conversion, 1961
Abstract Anisotropy in the Seebeck effect is found to arise in two separate theoretical situations. It will arise in a single-carrier system when there are two competing scattering mechanisms. One of these (lattice scattering, for example) must be isotropic.
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Regional and directional anisotropy of apparent diffusion coefficient in rat brain

NMR in Biomedicine, 1999
Quantitative diffusion maps were recorded in normal rat brain. In multi-slice sections covering the whole brain, strong variation of the apparent diffusion coefficient (ADC) was observed depending on slice position at constant gradient direction. Furthermore, a varying difference between apparent diffusion coefficients depending on gradient direction ...
M, Hoehn-Berlage, M, Eis, B, Schmitz
openaire   +2 more sources