نتایج جستجو برای: anisotropy ratio

تعداد نتایج: 533857  

2009
R. Schlickeiser S. Artmann W. Dröge

The anisotropy-time profile of solar particle events provides a powerful diagnostics tool to the interplanetary plasma scattering parameters of energetic charged particles. In the weak focusing limit of the transport of solar particles in axisymmetric MHD turbulence, the particle anisotropy consists of two contributions, the streaming and the ComptonGetting contribution, resulting from the para...

2011
Huafeng Liu Fenglin Niu

S U M M A R Y We developed an integrated technique for estimating crustal anisotropy with a horizontal axis using radial (R) and transverse (T) receiver functions. The technique includes computing three individual and one joint objective function (JOF) and a reliability analysis of the estimated anisotropy. The individual objective functions (IOFs) are designed to: (1) maximize the peak energy ...

2001
Xiao-Ling Ye Y. H. Chen J. Z. Wang Z. G. Wang Z. Yang

Numerical calculations within the envelope function framework have been performed to analyze the relations between the magnitude of in-plane optical anisotropy and the values of the additional hole-mixing coefficients due to interface and electric field in ~001! symmetric GaAs/AlxGa12xAs superlattices for light propagating along the @001# direction. It is found that the heavyand light-hole stat...

2001
V. Zielasek Feng Liu Yuegang Zhao J. B. Maxson M. G. Lagally

A low-energy electron microscopy study of two-dimensional Si~001! island shapes near thermal equilibrium on 10315 mm large single-domain terraces reveals a continuous increase of island aspect ratio and a shape transition from elliptical to ‘‘American-football’’-like with increasing island size. The size-dependent island shapes are driven by elastic relaxation caused by the intrinsic surface st...

2017
Antony Lucas Richard Lebourgeois Frederic Mazaleyrat Eric Labouré R. Lebourgeois F. Mazaleyrat

The temperature dependence of core loss in cobalt substituted Ni-Zn-Cu ferrites was investigated. Co ions are known to lead to a compensation of the magnetocrystalline anisotropy in Ni-Zn ferrites, at a temperature depending on the cobalt content and the Ni / Zn ratio. We observed similar behaviour in Ni-Zn-Cu and it was found that the core loss goes through a minimum around this magneto-crysta...

2012
Mohamed S. Gaith

In this study, the elastic stiffness and the degree of anisotropy will be compared for the femur human and bovine bones are presented. A scale for measuring the overall elastic stiffness of the bone at different locations is introduced and its correlation with the calculated bulk modulus is analyzed. Based on constructing orthonormal tensor basis elements using the form-invariant expressions, t...

2014
Sami Bedra Randa Bedra Siham Benkouda Tarek Fortaki

In this paper, the effect of both uniaxial anisotropy in the substrate and air gap layer on the resonant frequency and bandwidth of circular microstrip patch are investigated. The problem is rigorously formulated based on the spectral domain technic in conjunction with Galerkin approach for computing the resonant frequency, half-power bandwidth, and radiation field of a tunable circular patch a...

2013
R. Shanker R. A. Singh

The anisotropic nearest-neighbour Heisenberg model for the simple cubic lattice has been investigated by interpolating the anisotropy between the Ising and isotropic Heisenberg limits via general spin high-temperature series expansions of the zero-field suspectibility. This is done by estimating the critical temperature (7V3 >) and the susceptibility exponent y from the analysis of the series b...

2000
J. P. Sinnecker K. R. Pirota

Magnetic properties and changes of impedance upon external field ~MI! are studied in amorphous CoP magnetic layers obtained by galvanostatic electrodeposition over cylindrical Cu substrates. The magnetic layer thickness is controlled by deposition time and varies between 3 and 7 mm. Due to the columnar growth of Co, thicker layers have stronger perpendicular radial anisotropy. The field and fre...

Journal: :Optics express 2008
Hung-Ying Chen Yu-Chen Yang Hon-Way Lin Shih-Cheng Chang Shangjr Gwo

By measuring linearly polarized photoluminescence (PL) from single, isolated gallium nitride (GaN) nanorods with the rod diameters in the subwavelength regime (30-90 nm), we present clear evidence for size dependence of polarization anisotropy. The maximum polarization ratio at room temperature (approximately 0.9 with emission and excitation light polarized parallel to the long axis of nanorod)...

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