Open Access. Powered by Scholars. Published by Universities.®
Electromagnetics and Photonics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Publication
Articles 1 - 2 of 2
Full-Text Articles in Electromagnetics and Photonics
Electrostatic Tuning Of Ferromagnetic Resonance And Magnetoelectric Interactions In Ferrite-Piezoelectric Heterostructures Grown By Chemical Vapor Deposition, Ning Li, Ming Liu, Ziyao Zhou, Nian X. Sun, D. V. B. Murthy, Gopalan Srinivasan, Tonya M. Klein, Vladimir M. Petrov, Arunava Gupta
Electrostatic Tuning Of Ferromagnetic Resonance And Magnetoelectric Interactions In Ferrite-Piezoelectric Heterostructures Grown By Chemical Vapor Deposition, Ning Li, Ming Liu, Ziyao Zhou, Nian X. Sun, D. V. B. Murthy, Gopalan Srinivasan, Tonya M. Klein, Vladimir M. Petrov, Arunava Gupta
Nian X. Sun
Magnetoelectric interactions as a function of applied electric field have been studied in ferrite-ferroelectric heterostructures at microwave frequencies. The measurements are performed on 1.5–2.0 μm thick nickel ferrite (NiFe₂O₄) films grown heteroepitaxially on lead zinc niobate-lead titanate and lead magnesium niobate-lead titanate substrates using direct liquid injection chemical vapor deposition. Large shifts in the ferromagnetic resonance profile are observed in these heterostructures due to strong magnetoelectric coupling resulting from electrostatic field induced changes in the magnetic anisotropy field. Theoretical estimates of field shifts are in good agreement with the experimental data.
Resonance Damping In Ferromagnets And Ferroelectrics, Allan Widom, Somu Sivasubramanian, Carmine Vittoria, S. Yoon, Yogendra N. Srivastava
Resonance Damping In Ferromagnets And Ferroelectrics, Allan Widom, Somu Sivasubramanian, Carmine Vittoria, S. Yoon, Yogendra N. Srivastava
Carmine Vittoria
The phenomenological equations of motion for the relaxation of ordered phases of magnetized and polarized crystal phases can be developed in close analogy with one another. For the case of magnetized systems, the driving magnetic field intensity toward relaxation was developed by Gilbert. For the case of polarized systems, the driving electric field intensity toward relaxation was developed by Khalatnikov. The transport times for relaxation into thermal equilibrium can be attributed to viscous sound wave damping via magnetostriction for the magnetic case and electrostriction for the polarization case.