High-gradient nanomagnets on cantilevers for sensitive detection of nuclear magnetic resonance.

ABSTRACT: Detection of magnetic resonance as a force between a magnetic tip and nuclear spins has previously been shown to enable sub-10 nm resolution 1H imaging. Maximizing the spin force in such a magnetic resonance force microscopy (MRFM) experiment demands a high field gradient. In order to study a wide range of samples, it is equally desirable to locate the magnetic tip on the force sensor. Here we report the development of attonewton-sensitivity cantilevers with high-gradient cobalt nanomagnet tips. The damage layer thickness and saturation magnetization of the magnetic material were characterized by X-ray photoelectron spectroscopy and superconducting quantum interference device magnetometry. The coercive field and saturation magnetization of an individual tip were quantified in situ using fr

SUBMITTER: Longenecker JG 

PROVIDER: S-EPMC3535834 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature