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Investigation of wide range magnetoresistance in La0.7Ca0.3−xAgxMnO3 (0 ≤ x ≤ 0.2) system

  • Rashmi Yadav
  • Vilas Shelke
Article

Abstract

We synthesized magnetoresistive compounds with nominal compositions La0.7Ca0.3−xAgxMnO3 (0 ≤ x ≤ 0.2) by solid state reaction method with different sintering temperatures. All the samples exhibited orthorhombic structure with variable lattice parameters. The metal-insulator transitions were observed below room temperature in most of the samples. Depending upon the composition and sintering temperature, the samples showed very high magnetoresistance in narrow range or significant magnetoresistance over wide range of temperature. The ac susceptibility measurement revealed compositional dependence of Curie temperature.

Keywords

Sinter Temperature Manganite Solid State Reaction Method High Sinter Temperature Average Ionic Radius 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We are thankful to CSIR, New Delhi and UGC-DAE CSR, Indore for providing financial support. We acknowledge the access to experimental facilities and suggestions given by Dr Rajiv Rawat, Dr. Alok Banerjee and Dr Mukul Gupta at UGC-DAE CSR, Indore.

References

  1. 1.
    N. Izyumskaya, Y. Alivov, H. Morkoc, Cric. Rev. Solid State Mater. Sci. 34, 89 (2010)CrossRefGoogle Scholar
  2. 2.
    G. Catalan, J.F. Scott, Adv. Mater. 21, 2463 (2009)CrossRefGoogle Scholar
  3. 3.
    V. Shelke, V.N. Harshan, S. Kotru, A. Gupta, J. Appl. Phys. 106, 104114 (2009)CrossRefGoogle Scholar
  4. 4.
    V. Shelke, D. Mazumdar, G. Srinivasan, A. Kumar, S. Jesse, S.V. Kalinin, A.P. Baddorf, A. Gupta, Adv. Mater. 23, 669 (2011)CrossRefGoogle Scholar
  5. 5.
    V. Shelke, G. Srinivasan, A. Gupta, Phys. Stat. Solidi. RRL 4, 79 (2010)CrossRefGoogle Scholar
  6. 6.
    D. Mazumdar, V. Shelke, M. Iliev, S. Jesse, A. Kumar, S.V. Kalinin, A.P. Baddorf, A. Gupta, Nano. Lett. 10, 2555 (2010)CrossRefGoogle Scholar
  7. 7.
    A. Fert, Rev. Mod. Phys. 80, 1517 (2008)CrossRefGoogle Scholar
  8. 8.
    P.K. Siwach, H.K. Singh, O.N. Srivastava, J. Phys. Condens. Matter. 20, 273201 (2008)CrossRefGoogle Scholar
  9. 9.
    M. Imada, A. Fujimori, Y. Tokura, Rev. Mod. Phys. 70, 1039 (1998)CrossRefGoogle Scholar
  10. 10.
    E. Dagotto, T. Hotta, A. Moreo, Phys. Rep. 344, 1 (2001)CrossRefGoogle Scholar
  11. 11.
    C.S. Hong, W.S. Kim, N.H. Hur, Solid. State. Commun. 121, 657 (2002)CrossRefGoogle Scholar
  12. 12.
    V. Shelke, S. Khatarkar, R. Rawat, R. Singh, Solid. State. Commun. 135, 208 (2005)CrossRefGoogle Scholar
  13. 13.
    V. Shelke, A. Das, I. Dhiman, R. Yadav, S. Khatarkar, A. Anshul, R.K. Singh, J. Phys. Condens. Matter. 20, 395218 (2008)CrossRefGoogle Scholar
  14. 14.
    V. Shelke, S. Khatarkar, R. Yadav, A. Anshul, R.K. Singh, J. Magn. Magn. Mater. 322, 1224 (2010)CrossRefGoogle Scholar
  15. 15.
    R. Yadav, A. Anshul, V. Shelke, J. Mater. Sci., Mater Electron. 22, 1173 (2011)CrossRefGoogle Scholar
  16. 16.
    W. Cheikh-Rouhou Koubaa, M. Koubaa, A. Cheikhrouhou, J. Alloys Comp. 453, 42 (2008)CrossRefGoogle Scholar
  17. 17.
    M. Koubaa, W. Cheikhrouhou-Koubaa, A. Cheikhrouhou, J. Alloys Comp. 473, 5 (2009)CrossRefGoogle Scholar
  18. 18.
    A.E. Irmak, A. Coskun, E. Tasarkuyu, S. Akturk, G. Unlu, Y. Samancioglu, C. Sarikurkcu, B.M. Kaynar, A. Yucel, J. Magn. Magn. Mater. 322, 945 (2010)CrossRefGoogle Scholar
  19. 19.
    N. Ibrahim, A.K. Yahya, S.S. Rajput, S. Keshti, M.K. Talari, J. Magn. Magn. Mater. 323, 2179 (2011)CrossRefGoogle Scholar
  20. 20.
    M. Koubaa, Y. Regaieg, W.C. Koubaa, A. Cheikhrouhou, S. Ammar-Merah, F. Herbst, J. Magn. Magn. Mater. 323, 252 (2011)CrossRefGoogle Scholar
  21. 21.
    J.M.D. Coey, M. Viret, S. Von Molnar, Adv. Phys. 48, 167 (1999)CrossRefGoogle Scholar
  22. 22.
    R.D. Shanon, Acta. Crystallogr. A 32, 751 (1976)CrossRefGoogle Scholar
  23. 23.
    J.L. Garcia-Munoz, J. Fontucuberta, B. Martinez, A. Seffar, S. Pinol, X. Obradors, Phys. Rev. B 55, R668 (1997)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Department of PhysicsBarkatullah UniversityBhopalIndia

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