Magnetic-Susceptibility and Low-Temperature Specific-Heat Studies of Ti, Zr, and Hf

The results of magnetic-susceptibility and low-temperature specific-heat measurements of high-purity Zr and highest-obtainable-purity Hf are presented, together with data for high-purity Ti taken from an earlier publication by the present authors. The observed susceptibility components of the Zr single crystal (χ_∥=1.65₆, χ_⊥=1.09₂ {μ}emu/g) confirm the results of another recent measurement; and susceptibility data for Hf single crystals (χ_∥=0.53₁; χ_⊥=0.35₄ {μ}emu/g) are reported for the first time. With the aid of the calorimetric data, values of χorb are deduced to be 125, 100, and 75 {μ}emu/mole for Ti, Zr, and Hf, respectively. A possible mechanism for the susceptibility temperature dependence in these metals is suggested.