Multi-quantum echoes in GdAl2 zero-field high-resolution NMR

►Using two RF pulses five multi-quantum echoes for 27Al nuclei were obtained. ► Spectra obtained from the FID's and the even echoes presented higher resolution. ► Quadrupolar couplings were determined from both spectra and echo oscillations. ► Sample model with two regions presenting different inhomogeneous broadenings.