Estudio de campos locales residuales mediante relaxometría magnética nuclear en el sistema rotante

Abstract

We present advances on the study of a nuclear magnetic resonance technique in the rotating frame. The method, based on the spin-lock experiment, allows to get information on the residual local fields in molecular organized materials. The magnetization after a certain lock-time is studied as a function of the radio-frequency field atenuation. The obtained dispersion curve, within a frequency interval ranging from a few kHz to about 50 kHz, contains information about the residual local field along the external magnetic field. The interpretation of the results is consistent and comparable with those obtained by other methods.