Say you want a nonconductive high melting point, high specific heat, high thermal conductivity material, and aren't particularly worriedabout cost. LiH has a high specific heat and decent heat capacity. BeO has a better thermal conductivity by a factor of 20 ish, but worse specific heat by a factor of 3.5 ish. Is there a way to combine them to get some of both? Are they even stable together at high temperature?