“…The transformation of the close packed structures to the bcc structures in the rare earths and yttrium are accompanied by abrupt changes in the electrical resistivity, as observed in this work and elsewhere (14,60). Such transformations in zirconium and hafnium are accompanied by similar changes in electrical resistivity (108,109). The changes in electrical resistivity of terbium at 1316°C and those of dysprosium and holmium have the characteristics of a close-packed to bcc transformation.…”