The boundaries of electrical and thermal conductivities of the metal-hydrogen system TaH <i>x</i>

The electrical resistance and thermal conductivity of the two-phase system TaHx (х ≲ 0.1) were investigated. It was shown that for two-phase metal-hydrogen systems, narrow temperature limits of conductivities can be constructed based on the temperature dependences of the conductivities of individual phases. The corresponding conductivities are within such narrow limits only under conditions of maximum perfection of the hydride phase, i.e., where the precipitations of the hydride phase are well formed, and the bulk particles are stable. Under such conditions, the temperature of the superconducting transition, Tc = 4.4 K, remains unchanged compared to the pure metal.