Nuclear Magnetic Resonance Study of Metallic Scandium Chlorides

摘要

The exp 45 Sc nuclear magnetic resonance was studied in samples having the general composition CsSc/sub x/Cl sub 3 (0.67 less than or equal to x less than or equal to 1.0) in the CsCl-ScCl sub 3 -Sc system. In particular the structure of CsScCl sub 3 suggests that it may be a one-dimensional conductor, and an attempt was therefore made to detect the occurrence of a metal-insulator transition of the type characteristic of one-dimensional conductors. Conventional crossed-coil (nuclear induction) techniques were employed. The exp 45 Sc resonance was studied over a wide frequency range (4 to 24 MHz) at 300K, these measurements yielding the Knight shift and nuclear electric quadrupole coupling parameters. No significant variation in the spectra occurred from 4.2K to 450K, indicating the absence of a metal-insulator transition in this temperature range. (ERA citation 03:037743)