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"
Computational Micromagnetic Study of Particulate Media Hysteresis and Recording
"
Document Type
:
Latin Dissertation
Language of Document
:
English
Record Number
:
151472
Doc. No
:
ET23264
Main Entry
:
Christian Seberino
Title Proper
:
Computational Micromagnetic Study of Particulate Media Hysteresis and Recording
Note
:
This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract
:
A description of the micromagnetic theory, algorithms, computer soft-ware and computer hardware built and used to study particulate media particles,hysteresis and recording is first provided. This includes a derivation and analysisof the modified version of the Fast Multipole Method used in this dissertation.Results will then be presented on particulate media particle nucleation field de-pendence on particle shape, particle aspect ratio, ferromagnetic exchange energyand external magnetic field angle. Results on the discretization necessary to accu-rately model a particle will also be provided. The reversal mode of a particle willbe simulated and analyzed. Simulated longitudinal and transverse hysteresis loopswill be presented. Results will also be presented on particulate media coercivityand squareness dependence on volumetric packing fraction. Simulated recordedtransition results will be given as well as total power spectra results for AC andDC erased particulate media. Numerical results will be compared to experimen-tal data and analytical theories. Advice is provided on how to build a personalsupercomputer like the one used in the numerical experiments of this dissertation.....-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject
:
Electericl tess
:
برق
electronic file name
:
TL46500.pdf
Title and statement of responsibility and
:
Computational Micromagnetic Study of Particulate Media Hysteresis and Recording [Thesis]
http://localhost/site/catalogue/151472
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TL46500.pdf
TL46500.pdf
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