Electric-field tunable spin diode FMR in patterned PMN-PT/NiFe structures
Slawomir Ziętek , Piotr Ogrodnik , Witold Skowrońsk , Feliks Stobiecki , Sebastiaan Van Dijken , Józef Barnaś , Tomasz Stobiecki
AbstractDynamic 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 Landau-Lifshitz-Gilbert equation, taking into account the magnetostriction effect, is used to explain the measured dynamics. Based on this model, conditions for optimal electric-field tunable spin diode FMR in patterned NiFe/PMN-PT structures are derived.
|Journal series||Applied Physics Letters, ISSN 0003-6951|
|Publication size in sheets||0.3|
|Keywords in English||Piezoelectric fields; Magnetic fields; Magnetic anisotropy; Piezoelectric films; Electrical resistivity|
|Score|| = 35.0, 28-11-2017, ArticleFromJournal|
= 40.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 3.411 (2) - 2016=3.341 (5)|
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