In the ferrite slab, a static magnetic field is applied in the z direction, resulting in a uniform intensity H 0 within the ferrite. The dispersion equation 5 is derived by applying boundary conditions to the solutions of equation 4. The dispersion relation equation 5 relates the transverse wave numbers for each media. It is an implicit equation that gives the surface wave dispersion relation. Equation 5 to equation 7 can only be solved numerically. The solutions of these equations give the MSSW at the different limits.
The dispersion equations 5 , 6 and 7 are solved numerically to get information about MSSW at different limits. The bierfringent behaviour does not appear in the unbounded ferrite film characteristic curve or in the similar structure free of loss Al-Sahhar et al. The MSSW behaviour depends on s. Moreover, the values of the normalized frequency of MSSW vary as s changes.
We also notice that the wave either propagates in one direction or in the other at certain ranges of frequencies. The MSSW behaviour changes as s changes. We also see that as the ferrite layer thickness, s, changes, the MSSW undergoes different behaviour and the corresponding frequency to a certain propagation constant k y changes.
However, it stays unidirectional. That is the waves propagates in— k y. It also changes as s varies. However, it propagates in one or the other direction at certain ranges of frequencies. It also changes as s changes. In this case, only backward MSSW propagates and its normalized frequency changes as s varies. MSSW propagation is studied in an asymmetric slab waveguide consisting of ferrite film sandwiched between air and MTM film placed on a metal substrate.
The dispersion relation for the MSSW is studied at three different cases corresponding to the different MTM layer thicknesses: finite thickness, infinite thickness, and zero. The three resulted dispersion equations are numerically solved. Results are presented by plotting the MSSW frequency as a function of the y- component of the propagation constant k y.
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This result is promising in improving the waveguide performance. It also has industrial applications; i. Zezad I. He got his B. He earned his M. In the period —, he worked as teacher at high schools in Gaza. Then, he was promoted to assistant professor in He became a head of Physics Department in the period from to He participated in several conferences and workshops. His research interests are: non-linear optical sensors, magneto static surface waves, numerical methods, photovoltaic cells and metamaterial application. Mohammed M. He received his B. He became an associate professor in and a professor of Physics in His research interests include nonlinear optical sensors, optoelectronics, magnetostatic surface waves, numerical techniques, mesoscopic systems, energy, applied mathematics, nanotechnology, and physics education.
Hala J. El-Khozondar was born in Gaza, Palestinian Territory. She got her B. She earned her Ph. She joined the physics faculty at BirZeit University in In , she worked as assistant professor in the electrical engineering EE department at Islamic University of Gaza. In , she was promoted to associate professor EE department.
She worked in initiating and developing the quality assurance unit and the external relations at Islamic University of Gaza. She advises several graduate and undergraduate students.
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She participated in several conferences and workshops. Her research interests are focused on studying Wireless communication, optical communication, nonlinear optics, optical fiber sensors, magneto-optical isolators, optical filter, MTMs devices, biophysics, electro-optical waveguides, and numerical simulation of microstructural evolution of polycrystalline materials.
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She is also coordinator for several projects including TEMPUS for promoting long life education, and Al-maqdisi to enhance collaboration with French partners. Phys Rev B , Phys Solid State , Bestler AD: TE no surface waves at ferrite—air interfaces. Microwave Res Inst. Bongianni WL: Magnetostatic propagation in a dielectric layered structure. Fact Sheet. Objective To grow high-quality epitaxial YIG films for microwave applications; To investigate linear and nonlinear diffraction of spin waves in garnet films; To investigate excitation and reception of magnetostatic spin waves in garnet films by planar transducers of various types; To investigate spin wave parametric amplification effects; To investigate microwave spin-wave envelope soliton self-generation effects; To investigate bistability and multistability of magnetostatic spin waves; To elaborate novel ferrite-film devices.
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Magnetostatic Waves and Their Application
Project information. Start date 1 May End date 30 April Deliverables Deliverables not available.
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