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Low-loss tunable bandpass filters (BPFs) using partially magnetized ferrites is presented. A magnetic field tunable BPFs was designed based on partially magnetized yttrium iron garnet (YIG) operating at 6.17 GHz, which shows low insertion loss and a large frequency tunability of under a low bias field of 100 Oe. Power handling measurement on the tunable BPF with partially magnetized...
A compact magnetically tunable bandpass filter on partially magnetized yttrium iron garnet (YIG) substrate is presented. The bandpass filter led to a large frequency tunability of 7% (from 5.77 to 6.2GHz) under a low bias field of 0 to 100 Oe, while partially magnetized ferrites exhibit a tunable permeability μr range from 0.71 to 0.94. The bandpass filter also exhibited a good impedance match and...
Magnetic nano-composites fibers were prepared by in-situ synthesis method. The loading degree of magnetic particles (Fe3O4) depends on Fe2+ concentration, amount of PEI, reaction temperature, aging time and stirring speed. The structure and properties of magnetic paper were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The results...
In this work the effect of temperature on giant magnetic-field-induced stain (MFIS) of a Ni52Mn24Ga24 single crystal, was quantified. A larger MFIS up to 1.2% was reported. A single crystal was grown in [001] direction of parent phase by a Czochralski method. A two-step annealed treatment (1073 K for 24 h and 773 K for 24 h) is adopted. A two-step thermally induced transition behavior in the Ni52Mn...
In this work, Fe65Co35 alloy which has maximum saturation magnetization (Ms) among all metal magnetic materials was chosen to make Fe65Co35-SiO2 granular films, and the magnetic properties in whole composition were studied. The results show that good high frequency soft magnetic films were obtained by carefully controlling the microstructure. A serious (Fe65Co35)x(SiO2)1-x granular films are fabricated...
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