TY - JOUR
T1 - Electrical, magnetic and thermal properties of Pr0.6- xBixSr0.4MnO3 manganites
AU - Daivajna, Mamatha D.
AU - Kumar, Neeraj
AU - Awana, V. P.S.
AU - Gahtori, Bhasker
AU - Benedict Christopher, J.
AU - Manjunath, S. O.
AU - Syu, K. Z.
AU - Kuo, Y. K.
AU - Rao, Ashok
PY - 2014/3/5
Y1 - 2014/3/5
N2 - In the present communication, we report the electrical, magnetic and thermal properties of Bi-doped Pr0.6Sr0.4MnO3 (PSMO) compounds. These measurements show that the transition temperature decreases with Bi-content. Analyses on the measured electrical resistivity and thermoelectric power data indicate that the small polaron hopping model is operative in the high temperature paramagnetic phase for all samples. The thermal conductivity, κ(T) for samples studied in the present work is found to be low which is essentially due to Jahn-Teller (JL) distortion in the samples. It is observed that κ(T) is seen to decrease with increase in doping concentration of Bi which is possibly due to the formation of JT polarons which act as scattering centers. From specific heat measurements, we observe reduction in values of entropy change with increase in bismuth content which suggests that the magnetic inhomogeneity increases with Bi substitution.
AB - In the present communication, we report the electrical, magnetic and thermal properties of Bi-doped Pr0.6Sr0.4MnO3 (PSMO) compounds. These measurements show that the transition temperature decreases with Bi-content. Analyses on the measured electrical resistivity and thermoelectric power data indicate that the small polaron hopping model is operative in the high temperature paramagnetic phase for all samples. The thermal conductivity, κ(T) for samples studied in the present work is found to be low which is essentially due to Jahn-Teller (JL) distortion in the samples. It is observed that κ(T) is seen to decrease with increase in doping concentration of Bi which is possibly due to the formation of JT polarons which act as scattering centers. From specific heat measurements, we observe reduction in values of entropy change with increase in bismuth content which suggests that the magnetic inhomogeneity increases with Bi substitution.
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U2 - 10.1016/j.jallcom.2013.11.033
DO - 10.1016/j.jallcom.2013.11.033
M3 - Article
AN - SCOPUS:84890093931
SN - 0925-8388
VL - 588
SP - 406
EP - 412
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
ER -