Article ID Journal Published Year Pages File Type
5490030 Journal of Magnetism and Magnetic Materials 2017 8 Pages PDF
Abstract
We propose an experimental technique for extending feedback compensation of dissipative radiation used in nuclear magnetic resonance (NMR) to encompass ferromagnetic resonance (FMR). This method uses a balanced microwave power detector whose output is phase shifted π/2, amplified, and fed back to drive precession. Using classical control theory, we predict an electronically controllable narrowing of field swept FMR line-widths. This technique is predicted to compensate other sources of spin dissipation in addition to radiative loss.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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