Interest in the titanium boride system stems from a patent disclosure by Vahldiek in 1982. In that disclosure TiBx(x=1.6) crystals were subjected to pressures of 300,000 psi and found to have vanishingly low resistivities at room temperature. In this study we processed TiBx crystals by a variety of techniques and pressurized the samples up to 350,000 psi. No high temperature superconductivity was observed.
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F. W. Vahldiek U.S. Patent # 4,349,636; Method for Increasing the Ductility and Conductivity of Refractory Crystals; 1982.
F.W. Vahldiek; J.Less Common Metals, 12 (1967) pg 202-209.
A.D.Mcleod, J.S. Haggerty, D.R. Sadoway, Electrical Resistivities of Monocrystalline and Polycrystalline TiB2 J. Amer. Vac. Soc. 67 no. 11 (1984) pg 705-708.
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Ahern, B.S., Bachowski, S. & Horrigan, J. Investigation of Possible Superconductivity in Titanium Borides. MRS Online Proceedings Library 169, 1113–1114 (1989). https://doi.org/10.1557/PROC-169-1113