Simulasi Numerik Soliton Magnetik Amplop Gelombang Mikro Dalam Lapisan Tipis Ferromagnetik = The Numerical Simulation on The Microwave Magnetic Envelope Solitons in Ferromagnetic Film
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Lembaga Penelitian dan Pangabdian kepada Masyarakat, Universitas Gadjah Mada
, 1999
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/23432/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=6381 |
Daftar Isi:
- ABSTRACT Numerical simulation on the magnetic envelope solitons of forward volume magnetostatic waves in Yttrium Iron Garnet (YIG) film had been done. The purpose of this numerical study was to know the influence of varying the input-pulse amplitude and its temporal-width on the number of envelope solitons generated. The damped nonlinear SchrOdinger equation acting as mathematical model of the magnetostatic wave propagation in YIG film was solved numerically by finite difference method in which the nonlinear term was approximated by an extrapolation. The finite difference equations were then solved by solving a tridiagonal matrix equation. The numerical results of the simulation showed that when the temporal-width was increased with fixed amplitude, the number of generated soli-tons increased. The next study could be done on the simulation on the bright and dark solitons, by adding the higher order terms in Taylor expansion of the frequency dispersion relation of the spin wave from which the basic of the nonlinear Schrodinger equation could be derived. Keywords: envelope solitons, damped nonlinear Schrtidinger equation, finite dill ference method, extrapolation approximation