نتایج جستجو برای: anisotropy

تعداد نتایج: 34167  

2002
Sudhir Raniwala

Measurements of azimuthal distribution of inclusive photons using the fine granularity preshower photon multiplicity detector (PMD) at CERN SPS are used to obtain anisotropy in the azimuthal distributions. These results are used to estimate the anisotropy in the neutral pion distributions. The results are compared with results of charged particle data, both for first order and second order anis...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1357

در طبیعت ضریب آبگذاری یک آبخیز در جهات مختلف متغیر است و این خود موجب anisotropy در محیط میگردد. مسئله حرکت مایعات ناهمگن (مخلوط آب شور و شیرین) بطرف چاههای نیمه عمیق در یک محیط anisotropoc را میتوان با تغییراتی به حالت isotropic تبدیل کرد که این خود قبلا" توسط محققین چندی مورد بررسی قرار گرفته است . در مطالعه حاضر با بکار بردن تغییراتی در دستگاه مختصات محیط غیر یکنواخت خود را به محیطی یکنواخت ...

2007
Jean-Guy Caputo Yuri Gaididei Volodymyr P. Kravchuk Franz G. Mertens Denis D. Sheka Taras Shevchenko

Jean-Guy Caputo,1,2 Yuri Gaididei,3 Volodymyr P. Kravchuk,4 Franz G. Mertens,5 and Denis D. Sheka4,* 1Laboratoire de Mathématiques, INSA de Rouen, Boîte Postale 8, 76131 Mont-Saint-Aignan Cedex, France 2Laboratoire de Physique Theorique et Modelisation, Université de Cergy-Pontoise and CNRS, Cergy-Pontoise 95011, France 3Institute for Theoretical Physics, 03143 Kiev, Ukraine 4National Taras She...

2006
Francesco Parisen Toldin Ettore Vicari

We investigate the nature of the critical behaviour of the randomanisotropy Heisenberg model (RAM), which describes a magnetic system with random uniaxial single-site anisotropy, such as some amorphous alloys of rare earths and transition metals. In particular, we consider the strong-anisotropy limit (SRAM), in which the Hamiltonian can be rewritten as the one of an Ising spin-glass model with ...

In this paper, the effect of anisotropy on the free vibration of laminated rectangular plate supporting a localized patch mass is investigated. The two variable refined plate theory is applied to define the third order displacement field of a composite rectangular plate. The plate is considered to have simply supported boundaries. The equations of motion for rectangular plate are obtained by ca...

High magneto- crystalline anisotropy (ku=7×106j/m3) of L10-FePt nanoparticles are an excellent candidate for ultra high-density magnetic recording. The 4 nm FePt nanocrystals were prepared by superhydride reduction of FeCl2·4H2O and Pt(acac)2 precursors in the phenyl ether by reduction of the 1, 2-hexadecanediol and LiBEt3H superhydride. The crystal and magnetic structures were studied by XRD a...

Investigation of broken symmetry phases with long range order in strongly correlated electron systems is among subjects that have always been of interest to condensed matter scientists. In this paper we tried to study the existence of the 120 degrees magnetic spiral order, based on anisotropy in geometrically frustrated triangular lattices, using variational cluster approximation. We observed t...

maryam Hojatifar Peyman Sahebsara,

 The two-dimensional structure of graphene, consisting of an isotropic hexagonal lattice of carbon atoms, shows fascinating electronic properties, such as a gapless energy band and Dirac fermion behavior of electrons at fermi surface. Anisotropy can be induced in this structure by electrochemical pressure. In this article, by using tight-binding method, we review anisotropy effects in the elect...

2017
Ralph Skomski

I . I N T R O D U C T I O N Magnetic anisotropy caused by itinerant electrons in bulk materials and thin films has attracted considerable attention in recent years. Examples are the phenomenon of pcrpendicular thin-film anisotropy relevant to magnetooptical recording [ 11 and the 3d contribution to the magnetocrystalline anisotropy of permanent magnets such as SmCoj and Nd2Fel4B [2, 31. Apart f...

2003
M. W. Gutowski

Some recent publications on ferromagnetic resonance in amorphous wires mention presumably new kind of anisotropy, called there circumferential anisotropy , as an explanation of various observed spectral features. In this paper we argue that there is no special reason to speak of the new kind of anisotropy, since the observed spectra can be well described in terms of more traditional uniaxial an...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید