Chlorine Nuclear Quadrupole Resonance in ErCl3 and Some Similar Chlorides

Abstract

In ErCIa at 4.2°K the ,oCI NQR frequencies are 4.4566±0.0002 and 4.5157±0.0002 MHz and the asymmetry parameters '1 are 0.53±0.02 and 0.S2±0.03 for the eightfold and fourfold sites, respectively. The electric field gradient xx principal axis at each site is within 4 0 of the bisector of the Er-CI-Er angle. The above results are analyzed in a "bond-switching" scheme. We report also the ,oCI NQR frequencies in the trichlorides of Y, Dy, Ho, Tm, Yb, La, and U. The adequacy of the point-change model as the primary source of the electric field gradient in these ionic crystals is tested.

Templating rare-earth hybridization via ultrahigh vacuum annealing of ErCl3nanowires inside carbon nanotubes

“…Crystal structures such as lanthanide nitrides and chlorides were studied intensively in the 1960s and 1970s. [13][14][15][16][17] Although from a different scale approach, their crystallographic structure and phase transformations have been deeply examined and give rise to interesting optical and magnetic properties. The present work deals with the understanding of such properties together with the implied dimensionality.…”

Soft sphere model for nuclear quadrupole resonance in rare earth trichlorides under hydrostatic pressure

“…Bersohn calculated the + electric field gradient at Na in NaN0 3 , NaC10 3 and NaBr0 3 2+ as well as the electric field gradient at Cu in CuO_ 3+ and at Al in A1_0_. Carlson and Adams (1969) have applied the point charge model to the rare earth trichlorides.…”