Transport studies of Nb-doped Pr0.7Sr0.3Mn1−xNbxO3 (0≤x≤0.05) manganites

Abstract We have investigated the transport studies of the Nb-doped Pr 0.7 Sr 0.3 Mn 1− x Nb x O 3 (0≤ x ≤0.05) manganites for the first time for identifying the transport properties as a function of the composition and temperature. Pr 0.7 Sr 0.3 Mn 1− x Nb x O 3 (0≤ x ≤0.05) samples exhibit a single phase nature with an orthorhombic structure and a Pbnm space group. These materials show colossal magnetoresistance effect (CMR) and have wide technological applications such as magnetic sensors, reading head devices, spintronics, bolometers, magnetic refrigeration, etc. The computed transport properties such as cohesive energy, Reststrahlen frequency, Debye temperature, Gruneisen parameter and temperature dependence of specific heat of Pr 0.7 Sr 0.3 Mn 1− x Nb x O 3 (0≤ x ≤0.05) manganites are discussed in detail in the present work by applying extended rigid ion model (ERIM) and have shown significant agreement with the corresponding available results.