Low loss spin wave resonances in organic-based ferrimagnet vanadium tetracyanoethylene thin films

Abstract

We experimentally demonstrate high quality factor spin wave resonances in an encapsulated thin film of the organic-based ferrimagnet vanadium tetracyanoethylene (V[TCNE]${}_{\text{x 2}}$) coated on an a-plane sapphire substrate by low temperature chemical vapor deposition. The thickness standing wave modes are observed in a broad frequency range (1 GHz ~ 5 GHz) with high quality factor exceeding 3,200 in ambient air at room temperature, rivaling those of inorganic magnetic materials. The exchange constant of V[TCNE]${}_{\text{x 2}}$, a crucial material parameter for future study and device design of the V[TCNE]${}_{\text{x 2}}$, is extracted from the measurement with a value of $(4.61\pm 0.35)\times 10^{-16}{\mathrm{m}}^2$. Our result establishes the feasibility of using organic-based materials for building hybrid magnonic devices and circuits.

12 pages, 3 figures

References in corpus (7)

• Strongly coupled magnons and cavity microwave photons
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• Bose-Einstein Condensation in Magnetic Insulators
• High Cooperativity Cavity QED with Magnons at Microwave Frequencies
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
• Quantized spin excitations in a ferromagnetic microstrip from microwave photovoltage measurements
• High sensitivity microwave detection using a magnetic tunnel junction in the absence of an external applied magnetic field

Cited by in corpus (2)

• Nonlinear Spin Currents
• Raman Spectroscopy and Aging of the Low-Loss Ferrimagnet Vanadium Tetracyanoethylene