Superconductivity and Critical Field Strengths of Palladium-Boron-Hydrogen Alloys

Abstract

Transition temperatures and critical field strengths have been observed on superconducting palladium-boron-hydrogen alloys with different boron to hydrogen ratios. Homogeneous samples. prepared by equilibrium methods, exhibit superconductivity above 3.5 K for boron contents less than x = 0.07 (x = mole boron/mole palladium). Palladium-boron alloys need less hydrogen for reaching a Fixed transition temperature than boron free alloys. Critical field strengths for Tc = 0 K increase linearly with increasing boron content and reach 3.3 · 105 A/m at x = 0.044