Abstract
Presented are numerical studies of the magnetic permeability for arrays of artificial magnetic molecules simulated using a time domain TLM code. These artificial magnetic materials consist of a three dimensional periodic lattice of electrically small loaded loops suspended in a non-magnetic host medium. For this class of artificial magnetic media, we demonstrate good agreement between the permeability computed using a simple circuit theory model, and that computed using a full wave TLM simulation. This close agreement suggests that the salient physics for this type of artificial magnetic media may be well modeled using simple lumped equivalent circuits. A closed form expression is derived for the effective media permeability as a function of the molecular circuit loads. When molecules are uniformly loaded with lossless capacitors, the artificial media exhibits a Lorentzian response with a resonance (μ τ → ∞) below which the media is paramagnetic (μ τ>1) and above which the media is diamagnetic (μ τ<1). Resonant frequency, and magnetic permeability, can be adjusted by controlling the load capacitance.
| Original language | English (US) |
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| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | Society of Photo-Optical Instrumentation Engineers |
| Pages | 188-196 |
| Number of pages | 9 |
| Volume | 3795 |
| State | Published - 1999 |
| Event | Proceedings of the 1999 Terahertz and Gigahertz Photonics - Denver, CO, USA Duration: Jul 19 1999 → Jul 23 1999 |
Other
| Other | Proceedings of the 1999 Terahertz and Gigahertz Photonics |
|---|---|
| City | Denver, CO, USA |
| Period | 7/19/99 → 7/23/99 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics