Magnetic and Transport Properties of Bi0.5−x Pr x Ca0.5MnO3(0.0 ≤ x ≤ 0.50) Manganites

  • Ramesh Ade
  • Rajender Singh
Original Paper


In this work, the effect of Pr doping at the Bi site on the critical behavior and magnetocaloric and transport properties of Bi0.5−x Pr x Ca0.5MnO3 (0.0 ≤ x ≤ 0.50) manganite synthesized by sol–gel method is reported. An increase in Curie temperature (T C) with an increase in Pr content is observed. The samples with x = 0.0–0.40 show first-order phase transition whereas the sample with x = 0.50 shows second-order phase transition near T C. The estimated values of critical exponents β = 0.75 and γ = 0.82 for the sample with x = 0.50 do not fall into any universality class. The sample with x = 0.50 shows maximum magnetic entropy change (|ΔS m| = (1.22 J kg−1 K−1) at T C in an applied magnetic field of 40 kOe, which is associated with magnetocaloric effect (MCE). All the samples show semiconducting behavior and also follow Mott’s variable range hopping (VRH) model below the charge ordering temperature (T CO). The changes in magnetic and transport properties are correlated with the changes in the structural parameters of the samples. The results are discussed in view of the effect of Pr doping on the 6s2 lone pair character of Bi3+ ions and disorder in the samples.


Manganites Magnetization Magnetocaloric effect Transport properties 



Ramesh Ade is grateful for the award of UGC-(JRF+SRF) from CSIR India.


  1. 1.
    Tokura, Y. (ed.): Colossal Magnetoresistive Oxides. Gordon and Breach, London (2000)Google Scholar
  2. 2.
    Liang, L., Li, L., Wu, H., Zhu, X.: Research progress on electronic phase separation in low-dimensional perovskite manganite nanostructures. Nanoscale Res. Lett. 9, 325(1)–325(14) (2014)ADSGoogle Scholar
  3. 3.
    Ramesh, A., Singh, R.: Electron spin resonance and magnetization studies of Bi1−xCaxMnO3. Physica B 448, 273–276 (2014)ADSCrossRefGoogle Scholar
  4. 4.
    Ramesh, A., Singh, R.: Electron spin resonance studies of Bi1−xCaxMnO3 (x ≥ 0.65). IEEE Trans. Magn. 48, 4562–4565 (2012)ADSCrossRefGoogle Scholar
  5. 5.
    Kurian, J., Singh, R.: Electron spin resonance and resistivity studies of charge-ordered Bi1−xCaxMnO3. J. Phys. D: Appl. Phys. 41, 215006–215015 (2008)ADSCrossRefGoogle Scholar
  6. 6.
    Ramesh, A., Singh, R.: Effect of Pr doping on the properties of Bi0.5−xPrxCa0.5MnO3(0 ≤x ≤ 0.50) manganites. Ceram. Int. 41, 4759–4767 (2015)CrossRefGoogle Scholar
  7. 7.
    Ramesh, A., Singh, R.: Disorder-driven phase transition in La0.37 D 0.30Ca0.33MnO3(D = Bi, Sm) manganites. AIP Adv. 5, 087105(1)–087105(12) (2015)Google Scholar
  8. 8.
    Zhang, R.R., Kuang, G.L., Yin, L.H., Sun, Y.P.: Effect of progressive substitution of Bi3+ by La3+ on the structural, magnetic and transport properties of Bi0.6Ca0.4MnO3. J. Appl. Phys. 108, 103903(1)–103903(1) (2010)ADSGoogle Scholar
  9. 9.
    Yadav, K., Singh, H.K., Varma, G.D.: Interplay between charge and antiferromagnetic ordering in Bi0.6−xPrxCa0.4MnO3 (0 ≤x ≤ 0.6) perovskite manganite. Physica B 407, 1244–1249 (2012)ADSCrossRefGoogle Scholar
  10. 10.
    Narayana Jammalamadaka, S., Rao, S.S., Bhat, S.V., Vanacken, J., Moshchalkov, V.V.: Magnetocaloric effect and nature of magnetic transition in nanoscale Pr0.5Ca0.5MnO3. J. Appl. Phys. 112, 083917(1)–083917(4) (2012)ADSCrossRefGoogle Scholar
  11. 11.
    Aparnadevi, M., Barik, S.K., Mahendiran, R.: Investigation of magnetocaloric effect in La0.45Pr0.25Ca0.3MnO3 by magnetic, differential scanning calorimetry and thermal analysis. J. Magn. Magn. Mater. 324, 3351–3355 (2012)ADSCrossRefGoogle Scholar
  12. 12.
    Banerjee, S.K.: On a generalized approach to first and second order magnetic transitions. Phys. Lett. 12, 16–17 (1964)ADSCrossRefGoogle Scholar
  13. 13.
    Gencer, H., Atalay, S., Adiguzel, H.I., Kolat, V.S.: Magnetocaloric effect in the La0.62Bi0.05Ca0.33MnO3 compound. Physica B 357, 326–333 (2005)ADSCrossRefGoogle Scholar
  14. 14.
    Souza, J.A., Jardim, R.F.: Electrical transport in disordered and ordered magnetic domains under pressures and magnetic fields. J. Phys. D: Appl. Phys. 42, 032006(1)–032006(4) (2009)ADSCrossRefGoogle Scholar
  15. 15.
    Mott, N.F., Davis, E.A.: Electronic Processes in Non-crystalline Materials. Clarendon, Oxford (1971)Google Scholar
  16. 16.
    Li, T., Qua, Z., Fang, J.: Influence of Bi3+ doping on electronic transport properties of La0.5−xBixCa0.5MnO3 manganites. Physica B 406, 1312–1316 (2011)ADSCrossRefGoogle Scholar
  17. 17.
    Mayr, M., Morea, J.A., Verges, J., Arispe, A., Feiguin, E., Dagotto, E.: Resistivity of mixed-phase manganites. Phys. Rev. Lett. 86, 135–138 (2001)ADSCrossRefGoogle Scholar

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© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.School of PhysicsUniversity of HyderabadHyderabadIndia

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