Anomalies in the physical properties of vanadium the role of hydrogen

Abstract

Various researchers studying vanadium have reported anomalies in lattice parameters, electrical resistance, thermal expansion, magnetic susceptibility, elastic constants and thermoelectric power. The anomaly in magnetic susceptibility has not been substantiated and studies of nuclear magnetic resonance discount the likelihood of its existence. A recent resistometric study of vanadium—hydrogen alloys revealed that phase changes occurred at low temperatures in the alloys, bub not in hydrogen-free vanadium. It is suggested that many of the anomalies reported for vanadium may actually be attributable to hydrogen content.