نتایج جستجو برای: magnetostatic wave

تعداد نتایج: 218840  

Journal: :Journal of Magnetism and Magnetic Materials 2023

A fully self-consistent model for the excitation and reception of magnetostatic surface waves in thin ferromagnetic films by a set coplanar antennas was developed implemented numerically. The assumes that film is highly conducting interfaced with non-magnetic metallic films, but also suitable modeling magneto-insulating films. Perpendicular magnetic anisotropy Dzyaloshinskii-Moriya interaction ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده علوم پایه دامغان 1392

ساختارهای مزوسکوپیک شامل لایه های فرومغناطیس و ابررسانا مورد توجه زیادی قرار گرفته اند. این ساختارها همبستگی کوانتومی بین آثار همدوسی در فلز عادی یا فرومغناطیس و همدوسی ذاتی ابررسانایی را که توسط بازتاب آندریو تامین می شود، به نمایش می گذارند. در این پایان نامه رسانندگی تونلی یک پیوند ابررسانای نوع-p‎/ فلز عادی/ فرومغناطیس ‎( f/n/p-wave sc)‎ بر پایه گرافن را با استفاده از معادله دیراک-بوگولیوبو...

2010
A. G. Kosovichev

We developed a three dimensional linear code for simulations of MHD waves in a gravitationally stratified medium with strong gradients of pressure and density in the presence of non-uniform background magnetic field and background flows. The code is suitable for analysis of excitation, propagation, and transformation of MHD waves in realistic models of sunspots. Such a code can be used for prod...

2007
M. Droba N. Joshi O. Meusel U. Ratzinger

Here we report on the magnetostatic ring studies at Frankfurt University. The various effects arising by confinement of non-neutral plasmas in the longitudinal magnetic field were studied in the last 2 years. Subjects of detailed investigation were the behaviour of confined charged clouds in Gabor lenses[1] and solenoids, the consequences of a hollow density profile and of mirror charges on the...

1999
V. V. Liepa D. L. Sengupta T. B. A. Senior Peter Bower

This note presents the analysis, design, and performance characteristics of an rf Helmholtz coil facility. The facility was developed to measure the magnetic response of models up to two feet in size. Test measurements were made on metallic spheres and cylinders, and on a model F-106 aircraft over a 1-25 MHz frequency range corresponding to 20-520 kHz full scale. A large portion of the note is ...

Journal: :Bulletin of the Lebedev Physics Institute 2021

The collapse of the magnetic rotating protostellar cloud 10 $${{M}_{ \odot }}$$ mass is numerically studied. initial ratios thermal, magnetic, and rotational energy to gravitational magnitude are 0.3, 0.2, 0.01, respectively. emphasis on evolution properties quasi-magnetostatic primary disk formed at isothermal stage collapse. Simulations show that size increase during from 1500 au 7400 0.3 5.2...

Journal: :Australian Journal of Physics 1967

Journal: :journal of nanostructures 2013
m. almasi kashi a. ramazani v. asgari e. jafari- khamse

the effect of length variation on the magnetic properties of nife alloy nanowires electrodeposited into the alumina template was investigated. the diameter (45±2.5 nm) and length (~ 1.9, 7.12, 8.3, 9.5 and 13.3 µm) of the nanowires were estimated from scanning electron microscopy images. energy dispersive spectroscopy results showed ni3fe7 composition of the alloy nanowires.  the magnetic prope...

2015
Kai Wang Chao Yi Chang Liu Xiaowen Hu Steven Chuang Xiong Gong

The price of energy to separate tightly bound electron-hole pair (or charge-transfer state) and extract freely movable charges from low-mobility materials represents fundamental losses for many low-cost photovoltaic devices. In bulk heterojunction (BHJ) polymer solar cells (PSCs), approximately 50% of the total efficiency lost among all energy loss pathways is due to the photogenerated charge c...

2008
I. Astefanoaei I. Dumitru A. Diaconu L. Spinu A. Stancu

In this paper, the temperature dependence of the hysteretic processes of Co nanowires, squarelly ordered in an array prepared by electrodeposition in nanopores of alumina membranes was analyzed. Both the magnetostatic interactions induced in the nanowires arrays and the thermal stresses radial, azimuthal and axial stresses , which appear during the cooling of the system nanowire and alumina tem...

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