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Published December 15, 1996 | Published
Journal Article Open

Sensitivity and spatial resolution for electron-spin-resonance detection by magnetic resonance force microscopy

Abstract

The signal intensity of electron spin resonance in magnetic resonance force microscopy (MRFM) experiments employing periodic saturation of the electron spin magnetization is determined by four parameters: the rf field H1, the modulation level of the bias field Hm, the spin relaxation time tau1, and the magnetic size R([partial-derivative]H/[partial-derivative]z) of the sample. Calculations of the MRFM spectra obtained from a 2,2-diphenyl-1-picrylhydrazyl particle have been performed for various conditions. The results are compared with experimental data and excellent agreement is found. The systematic variation of the signal intensity as a function of H1 and Hm provides a powerful tool to characterize the MRFM apparatus.

Additional Information

© 1996 American Institute of Physics. (Received 19 October 1995; accepted 31 August 1996) The authors would like to thank Dr. P.E. Wigen for helpful discussions. This work was performed under the auspices of the U.S. Department of Energy.

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August 22, 2023
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October 16, 2023