نتایج جستجو برای: hard magnetic

تعداد نتایج: 481691  

1999
Author Cheng K. S. CHENG L. ZHANG

We present a model of X-ray emission from rotation-powered pulsars, which in general consist of one nonthermal component, two hard thermal components, and one soft thermal component. The nonthermal X-rays come from synchrotron radiation of eB pairs created in the strong magnetic Ðeld near the neutron star surface by curvature photons emitted by charged particles on their way from the outer gap ...

Journal: :Nanoscale 2012
A López-Ortega M Estrader G Salazar-Alvarez S Estradé I V Golosovsky R K Dumas D J Keavney M Vasilakaki K N Trohidou J Sort F Peiró S Suriñach M D Baró J Nogués

Inverted soft/hard, in contrast to conventional hard/soft, bi-magnetic core/shell nanoparticles of Mn(x)Fe(3-x)O(4)/Fe(x)Mn(3-x)O(4) with two different core sizes (7.5 and 11.5 nm) and fixed shell thickness (∼0.6 nm) have been synthesized. The structural characterization suggests that the particles have an interface with a graded composition. The magnetic characterization confirms the inverted ...

2015
Sebastian Biedermann Stefan Katzenbeisser Jakub Szefer

In this paper we present a new class of side-channel attacks on computer hard drives. Hard drives contain one or more spinning disks made of a magnetic material. In addition, they contain different magnets which rapidly move the head to a target position on the disk to perform a write or a read. The magnetic fields from the disk’s material and head are weak and well shielded. However, we show t...

Journal: :International Journal for Numerical Methods in Engineering 2022

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