It is proposed that ferromagnetic resonance (FMR) of thin-film ferrites can be utilized to simultaneously improve the radiation efficiency and input impedance matching electrically small antennas (ESAs). To validate concept, role FMR in first derived analytically with an ideal ferrite radiator. was concluded Gilbert damping ferrite, determining quality factor FMR, directly impacts on antenna. A...

We study transport in ferromagnetic-superconductor/normal-metal systems. It is shown that charge and spin currents are pumped from ferromagnetic superconductors into adjacent normal metals by adiabatic changes in the order parameters induced by external electromagnetic fields. Spin and charge pumping identify the symmetry of the superconducting order parameter, e.g., singlet pairing or triplet ...

The resonant interaction between surface acoustic waves and ferromagnetic thin films, a phenomenon known as acoustically driven resonance (ADFMR), provides way to control magnetic with purely voltage excitation. However, devices have historically been operated at harmonic frequencies, leading large insertion losses. In this work, we demonstrate harmonic-free drive of ADFMR where the strain reac...

We introduce the concept of computerized tomographic microscopy in magnetic resonance imaging using the magnetic fields and field gradients from a ferromagnetic probe. We investigate a configuration where a two-dimensional sample is under the influence of a large static polarizing field, a small perpendicular radio-frequency field, and a magnetic field from a ferromagnetic sphere. We demonstrat...