Phase formation, microstructure and gyromagnetic properties of c-axis oriented M-type hexaferrite applied to self-biased circulator
Source abstract
Abstract
Self-biased structure based on hexaferrite demonstrates potential for achieving planar miniaturization of microwave circulator. Appropriate magnetocrystalline anisotropy field H a and high squareness ratio M r /M s are indispensable for hexaferrite to meet with specific operating frequency and reduce loss of circulator, respectively. Gd 3+-Mg 2+ co-substitution is introduced to adjust H a of M-type hexaferrite Sr 1-xGd xFe 12-xMg xO 19 (SrM, x= 0.00, 0.05, 0.10, 0.15, 0.20, 0.25) while maintaining valence equilibrium. A M r /M s as high as 0.88 is achieved through ceramic process combined with magnetic field orientation. The ferromagnetic resonance linewidth of 774 Oe is detected by perturbational method based on coplanar waveguide at 43 GHz. Finally, A self-biased circulator using slotted structure based on SrM is designed, showcasing effective circular transmission functionality at Ku band.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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