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Document Type : Latin Dissertation
Language of Document : English
Record Number : 149754
Doc. No : ET21546
Main Entry : Ioan Tudosa
Title Proper : MAGNETIZATION DYNAMICS USING ULTRASHORT MAGNETIC FIELD PULSES
Note : This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract : Very short and well shaped magnetic field pulses can be generated using ultra-relativistic electron bunches at Stanford Linear Accelerator. These fields of severalTesla with duration of several picoseconds are used to study the response of mag-netic materials to a very short excitation. Precession of a magnetic moment by 90degrees in a field of 1 Tesla takes about 10 picoseconds, so we explore the range offast switching of the magnetization by precession.Our experiments are in a region of magnetic excitation that is not yet accessibleby other methods. The current table top experiments can generate fields longer than100 ps and with strength of 0.1 Tesla only.Two types of magnetic were used, magnetic recording media and model magneticthin films. Information about the magnetization dynamics is extracted from the mag-netic patterns generated by the magnetic field. The shape and size of these patternsare influenced by the dissipation of angular momentum involved in the switchingprocess.The high-density recording media, both in-plane andtested 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 : TL44720.pdf
Title and statement of responsibility and : MAGNETIZATION DYNAMICS USING ULTRASHORT MAGNETIC FIELD PULSES [Thesis]
 
 
 
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