  We report the superconductivity at enhanced temperature of 5.2 K in the
polycrystalline sample of ZrTe3 and Ni intercalated ZrTe3. ZrTe3 is a Charge
Density Wave (T = 63K) compound, which is known to superconduct only below 2K
in single crystalline form. We discuss that the intergrain strains in the
polycrystalline samples induces an intrinsic pressure and thus enhances the
transition temperature. Fe intercalation of ZrTe3 kills both the charge density
wave and superconducting states, gives rise to the magnetic ordering in the
compound.
