DIPOLAR INTERACTION IN SELECTED PARAMAGNETIC CRYSTALS

Publisher Website
Google Scholar
Abstract
Broadening of the paramagnetic resonance lines of Cr3+ in each of two salts, rubidium alum and potassium cobalticyanide, has been measured as a function of concentration. In rubidium alum the width between the peaks of the derivative was 6.3 oersteds up to 0.5% and increased with concentration above this value. In K3Co(CN)6 the width increased with increasing concentration from 2.4 oersteds at the lowest concentration of 0.01%. Calculations indicate that a major portion of the observed widths is due to dipolar interactions of the Cr3+ with neighboring nuclei and other Cr3+ ions. The greater width observed for the nominal (1/2 ± 3/2) lines over the (1/2–1/2) line in every sample at every orientation may be associated with concentration-dependent crystalline imperfections.

This publication has 18 references indexed in Scilit: