000			02906cam a2200337 a 4500
003			EG-GiCUC
005			20250223032525.0
008			200220s2020 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.24.05.M.Sc.2020.Kh.M
100	0		_aKhaled Ahmed Ali Elsaid
245	1	0	_aModelling of ultrafast laser in inducing magnetic properties of nanoparticles / _cKhaled Ahmed Ali Elsaid ; Supervised Wessameldin S. Abdelaziz , Jala M. Elazab
246	1	5	_aنمذجه الليزر فائق السرعه فى حث الخواص المغناطيسيه لجسيمات النانو
260			_aCairo : _bKhaled Ahmed Ali Elsaid , _c2020
300			_a121 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - National Institute of Laser Enhanced Sciences - Department of Laser Applications in Metrology Photochemistry and Agriculture
520			_aThe essence of magnetization is the angular momentum, arising from the electron spin. Circularly polarized pulses have strong temporary magnetic field pulses producing non thermal Opto-Magnetic effect via the inverse Faraday Effect. The mechanism of its excitation takes place via the stimulated Raman scattering. Ultrafast laser pulses opened a new area for magnetization dynamics time scale. This study is devoted to simulating the inverse Faraday Effect (Opto-Magnetic phenomena) in nanoparticles using ultrashort laser pulses and introducing a numerical model implemented by Matlab®. As for modelling the magnetic materials, the Finite Difference Time Domain (FDTD) is connected with Landau-Lifshitz-Gilbert equation. In the LLG equation, the local effective magnetic field is controlled by the time derivative of the magnetic moment in a micromagnetic cell. Maxwell{u2019}s field includes fields due to currents and magnetic sources, such as demagnetizing fields and Eddy current fields, by using FDTD-LLG computation techniques as the foot of the model represented here with a circular ultrashort laser pulse instead of the magnetic field in Landau-Lifshitz-Gilbert equation. In order to validate the results implemented in Matlab, the standard problem number four was used. It is one of the technical activities of the Micromagnetic Modeling Activity Group from NIST. The computations implemented in Matlab are in good agreement with the standard problem number four results implemented in open source OOMMF (Object Oriented Micromagnetic-Framework
530			_aIssued also as CD
653		4	_aInducing magnetic properties
653		4	_aNanoparticles
653		4	_aUltrafast laser
700	0		_aJala M. Elazab , _eSupervisor
700	0		_aWessameldin S. Abdelaziz , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAsmaa _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c76718 _d76718