Electric-field tunable spin diode FMR in patterned PMN-PT/NiFe structures

Slawomir Zietek*, Piotr Ogrodnik, Witold Skowronski, Feliks Stobiecki, Sebastiaan van Dijken, Jozef Barnas, Tomasz Stobiecki

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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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 100MHz 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. Published by AIP Publishing.

Original languageEnglish
Article number072406
Number of pages4
JournalApplied Physics Letters
Issue number7
Publication statusPublished - 15 Aug 2016
MoE publication typeA1 Journal article-refereed



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