Peculiarities of timing and spectral diagrams of magnetic video-pulse excitation influence on NMR spin-echo in magnets

TL;DR

This study systematically investigates how magnetic video-pulse timing and spectral diagrams affect NMR spin-echo signals in various magnetic materials, revealing key factors like hyperfine field anisotropy and domain wall mobility.

Contribution

It provides the first comprehensive analysis of timing and spectral diagrams of magnetic video-pulse influence on NMR spin-echo in diverse magnets, aiding spectral identification and resolution enhancement.

Findings

Timing diagrams depend on hyperfine field anisotropy.

Spectral diagrams are influenced by domain wall mobility.

Results can improve NMR spectral analysis in magnetic materials.

Abstract

We present the first systematic study of timing and spectral diagrams of magnetic video-pulse influence on the NMR two-pulse echo in a number of magnets (ferromagnets, ferrites, half metals, intermetals). It is shown that the timing diagrams showing the dependence of two-pulse echo intensity on the temporal location of a magnetic video-pulse in respect to radio-frequency pulses and the spectral diagrams of this influence are defined mainly by the local hyperfine field anisotropy and domain walls mobility. These diagrams could be used for the identification of the nature of NMR spectra in multidomain magnetic materials and to improve the resolution capacity of the NMR method in magnets.