Geetha, M and Rao, Ashok and Thukaram, V and Agarwal, S K and Bhatt, Ramesh Chandra and Tyagi, Kriti and Kuo, Y K (2014) Electrical and thermal transport properties of Dy0.95Pr0.05Ba2 (Cu1�x Mx)3O7�δ with (M¼Fe,Co,NiandZn)bulk superconductors. Solid State Communications, 187. pp. 38-42. ISSN 0038-1098

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Abstract

In the present communication, measurements of transition temperature, thermal conductivity, thermo-electric power and specific heat have been carried out on pristine and co-doped samples of Dy0.95Pr0.05Ba2(Cu0.98 M0.02)3O7�δ system[M¼Fe, Co, Ni and Zn].The electrical resistivity results show that all the samples exhibit metallic behaviour. The thermal conductivity results illustrate that for pristine sample ofDyBa2Cu3O7�δ, the expected pronounced hump in thermal conductivity is seen below the transition temperature. Thehumpissuppressedwith5%Pr-doping and this is further suppressed with co-doping. The thermo electric power measurements show that the pristine sample exhibits hole-like behaviour and this continues for doped as well co-doped samples. Pristine sample shows the expected jump in specific heat and with Pr-doping a slope change is observed near the transition temperature.

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