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We present a model for a skyrmion-based spin-torque nano-oscillator (STNO) that consists of dual free layers with Dzyaloshinskii–Moriya interaction and interlayer exchange coupling. Micromagnetic simulation shows that skyrmions in the dual free layers can precess independently by application of a spin-polarized current at the center of the ferromagnetic nanodisk. Compared to single free-layer devices,...
An inductive-based detection method of ferromagnetic resonance spectrum is demonstrated. For a single microscopic (~40 nm × 40 μm × 60 μm) magnetic dot, which is much smaller than the microwave wavelength, the change in the microwave transmission signal is as large as 15 dB when its magnetic permeability changes. This detection is several orders more sensitive than the conventional transmission line...
Using CST, a LTCC (low temperature co-fired ceramics) technology basing design of the metamaterial absorber in terahertz region (MM) is proposed. The metamaterial absorber is constructed by silver plane and a specially designed ERR structure. The investigation to the electric field, surface current and absorption power density distribution indicates that the metamaterial absorber we design is somewhat...
LTCC (low temperature co-fired ceramics) has been become the key technology of packaging for the integrated of RF passive components due to its higher performance of thermal sink, reliability and plays an important role in increasing higher frequency, decreasing the loss, minimize the volume, etc. This paper mainly focuses on the design and fabrication of RF band pass filter by LTCC technology. The...
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