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]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 3200 in ambient air at room temperature, rivaling those of inorganic magnetic materials. The exchange constant of V[TCNE]x∼2, a crucial material parameter for future study and device design of the V[TCNE]x∼2, is extracted from the measurement with a value of (4.61±0.35)×10−16 m2. Our result establishes the feasibility of using organic-based materials for building hybrid magnonic devices and circuits.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 22, 2016
- Source ID
- 10.1063/1.4961579
Entities
People
- E. Johnston-halperin
- Hong X Tang
- I. H. Froning
- Michael E. Flatté
- Na Zhu
- Xufeng Zhang
Organizations
- Defense Advanced Research Projects Agency
- National Science Foundation
- Ohio State University
- University of Iowa
- Yale University