Electric-field tunable spin diode FMR in patterned PMN-PT/NiFe structures
arXiv:1605.06019 · doi:10.1063/1.4961124
Abstract
Dynamic properties of NiFe thin films on PMN-PT piezoelectric substrate are investigated using the spin-diode method. Ferromagnetic resonance (FMR) spectra of microstrips with varying width are measured as a function of magnetic field and frequency. The FMR frequency is shown to depend on the electric field applied across the substrate, which induces strain in the NiFe layer. Electric field tunability of up to 100 MHz per 1 kV/cm is achieved. An analytical model based on total energy minimization and the LLG equation, with magnetostriction effect taken into account, is developed to explain the measured dynamics. Based on this model, conditions for strong electric-field tunable spin diode FMR in patterned NiFe/PMN-PT structures are derived.
References in corpus (4)
- Rectification of radio frequency current in ferromagnetic nanowire
- Magnetic field sensor with voltage-tunable sensing properties
- Rectification of radio frequency current in giant magnetoresistance spin valve
- Electrical rectification effect in single domain magnetic microstrips: a micromagnetics-based analysis