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Numerical Simulation Of Wave Propagation In Y- And Z-Type Hexaferrites For High Frequency Applications, J. Wang, A. Geiler, V. Harris, C. Vittoria
Numerical Simulation Of Wave Propagation In Y- And Z-Type Hexaferrites For High Frequency Applications, J. Wang, A. Geiler, V. Harris, C. Vittoria
Vincent G. Harris
The dispersion characteristics of microstrip lines on magnetically anisotropic substrates are studied utilizing the Galerkin's method in the spectral domain. Specifically, we calculate the differential phase shifts of devices consisting of Z-type (Zn₂Z) and Y-type (Zn₂Y) ferrites as a function of applied magnetic field. Our theoretical formulism is effective in modeling highly magnetically anisotropic materials, which are becoming increasingly important for the next generation of microwave devices. Such a theoretical treatment of anisotropic ferrite magnetic materials is presently unavailable in commercial numerical simulation tools.
Microwave, Magnetic, And Structural Properties Of Nanocrystalline Exchange-Coupled Ni₁₁Co₁₁Fe₆₆Zr₇B₄Cu₁ Films For High Frequency Applications, S. D. Yoon, A. K. Baraskar, A. Geiler, A. Yang, C. Pettiford, N. X. Sun, R. Goswami, M. A. Willard, C. Vittoria, V. G. Harris
Microwave, Magnetic, And Structural Properties Of Nanocrystalline Exchange-Coupled Ni₁₁Co₁₁Fe₆₆Zr₇B₄Cu₁ Films For High Frequency Applications, S. D. Yoon, A. K. Baraskar, A. Geiler, A. Yang, C. Pettiford, N. X. Sun, R. Goswami, M. A. Willard, C. Vittoria, V. G. Harris
Vincent G. Harris
Nanocrystalline structured films of the alloy Ni₁₁Co₁₁Fe₆₆Zr₇B₄Cu₁ were deposited by pulsed laser ablation deposition onto fused quartz substrates. A substrate temperature of 300°C was found to produce films consisting of body-centered-cubic (bcc) metallic grains suspended in an amorphous matrix. The bcc grain size ranged from 5 - 8 nm for substrate temperatures up to 300°C. Measured values of coercivity were consistently below 4 Oe for films having a saturation magnetization, as 4π Ms, of ∽16 kG with in- plane uniaxial anisotropy fields of 25 to 30 Oe. The ferromagnetic resonance peak- to- peak derivative linewidth was measured to be 34 …