Magnetic susceptibility and proton Knight shift in Pd‐Ag and Pd‐(rare earth) solid solution alloy hydrides

Abstract

The magnetic susceptibility χ and the 1H‐Knight shift KH for the ternary hydrides Pd0.6Ag0.4Hr (0.05 ≤ r ≤ 0.16), Pd0.7Ag0.3Hr (0.08 ≤ r ≤ 0.26), and Pd0.936(RE)0.064H0 REGd (0.04 ≤ r ≤ 0.47), Dy (0.06≤ r≤0.50), and Lu (0.02 ≤ r ≤ 0.59) are studied as a function of the hydrogen content using high resolution 1H‐NMR spectroscopy. Additionally, the temperature dependence of χ for the hydrogen free host alloys Pd0.936(RE)0.064 is measured using a SQUID magnetometer and the local f magnetic moments of Gd and Dy are determined. In all systems considered, χ is decreasing with increasing r and KH is negative and increasing with increasing r. The various contributions to χ and KH are discussed on the basis of augmented spherical wave (ASW) supercell band structure calculations.

Hydrogen spectroscopy of Pd0.9Ag0.1-H alloys on NMR scales

“…Sinsel et al [7] have measured the magnetic susceptibility and proton Knight shift for Pd 0.6 Ag 0.4 -H and Pd 0.7 Ag 0.3 -H ternary systems using high-resolution NMR spectroscopy and the method of parallel and perpendicular foil settings. This method was introduced by Kamaza and Fukai [8] and was used also by us for the measurements on Zr-Ni-H alloys [9].…”