Skip to main content
Log in

Ac and dc magnetotransport properties of the phase-separated La0.6Y0.1Ca0.3MnO3 manganite

Journal of Materials Science Aims and scope Submit manuscript

Abstract

The physical properties of the La0.6Y0.1Ca0.3MnO3 compound have been investigated, focusing on the magnetoresistance phenomenon studied by both dc and ac electrical transport measurements. X-ray diffraction and scanning electron microscopy analysis of ceramic samples prepared by the sol–gel method revealed that specimens are single phase and have average grain size of ∼0.5 μm. Magnetization and 4-probe dc electrical resistivity ρ(T,H) experiments showed that a ferromagnetic transition at T C  ∼ 170 K is closely related to a metal-insulator (MI) transition occurring at essentially the same temperature T MI . The magnetoresistance effect was found to be more pronounced at low applied fields (H ≤ 2.5 T) and temperatures close to the MI transition. The ac electrical transport was investigated by impedance spectroscopy Z(f,T,H) under applied magnetic field H up to 1 T. The Z(f,T,H) data exhibited two well-defined relaxation processes that exhibit different behaviors depending on the temperature and applied magnetic field. Pronounced effects were observed close to T C and were associated with the coexistence of clusters with different electronic and magnetic properties. In addition, the appreciable decrease of the electrical permittivity ε′(T,H) is consistent with changes in the concentration of e g mobile holes, a feature much more pronounced close to T C .

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

References

  1. Tokura Y (ed) (2000) Colossal magnetoresistance oxides. Gordon & Breach, New York

  2. Jin S, Tiefel H, McCornack M, Fastnacht RA, Ramesh R,Chen LH (1994) Science 264:413

    Article  CAS  Google Scholar 

  3. Burgy J, Moreo A, Dagotto E (2004) Phys Rev Lett 92:097202

    Article  Google Scholar 

  4. Souza JA, Jardim RF (2005) Phys Rev B 71:054404

    Article  Google Scholar 

  5. Dagoto E, Hotta T, Moreo A (2001) Phys Rep 344:1

    Article  Google Scholar 

  6. Uehara M, Mori S, Chen CH, Cheong SW (1999) Nature 399:560

    Article  CAS  Google Scholar 

  7. Hwang HY, Cheong S-W, Ong NP, Batlogg B (1996) Phys Rev Lett 77:2041

    Article  CAS  Google Scholar 

  8. Fu YL (2000) Appl Phys Lett 77:118

    Article  CAS  Google Scholar 

  9. Moreo A, Yunoki S, Dagotto E (1999) Science 283:2034

    Article  CAS  Google Scholar 

  10. Schiffer PE, Ramirez AP, Bao W, Cheong SW (1995) Phys Rev Lett 75:3336

    Article  CAS  Google Scholar 

  11. Fontcuberta J, Martnez B, Seffar A, Piñol S, Garcia-Muñoz JL, Obradors X (1996) Phys Rev Lett 76:1122

    Article  CAS  Google Scholar 

  12. Maignan A, Sindaresan A, Varadaju UV, Raveau B (1998) J Magn Magn Mater 184:83

    Article  CAS  Google Scholar 

  13. Shah WH, Hasanain SK (2002) J Magn Magn Mater 246:199

    Article  CAS  Google Scholar 

  14. Hu J, Qin H, Niu H, Zhu L, Chen J, Xiao W, Pei Y (2003) J Magn Magn Mater 261:105

    Article  CAS  Google Scholar 

  15. Glaser A, Ziese M (2002) Phys Rev B 66:094422

    Article  Google Scholar 

  16. Castro GMB, Rodrigues AR, Machado FLA, de Araujo AEP, Jardim RF, Nigam AK (2004) J Alloy Compd 369:108

    Article  CAS  Google Scholar 

  17. Carneiro AS, Fonseca FC, Jardim RF, Kimura T (2003) J Appl Phys 93:8074

    Article  CAS  Google Scholar 

  18. Souza JA, Jardim RF, Muccillo R, Muccillo ENS, Torikachvili MS, Neumeier JJ (2001) J Appl Phys 89:6636

    Article  CAS  Google Scholar 

  19. Fonseca FC, Souza JA, Jardim RF, Muccillo R, Muccillo ENS, Gouvêa D, Jung MH, Lacerda AH (2003) Phys Status Solidi A 199:255

    Article  CAS  Google Scholar 

  20. Fonseca FC, Souza JA, Jardim RF, Muccillo R, Muccillo ENS, Gouvea D, Jung MH, Lacerda AH (2004) J Eur Ceram Soc 24:1271

    Article  CAS  Google Scholar 

  21. Bauerle J (1969) J Phys Chem Solids 30:2657

    Article  CAS  Google Scholar 

  22. Fonseca FC, Muccillo R (2002) Solid State Ionics 149:309

    Article  CAS  Google Scholar 

  23. Escote MT, da Silva AM, Matos JR, Jardim RF (2000) J Solid State Chem 151:298

    Article  CAS  Google Scholar 

  24. Wang YX, Du Y, Qin RW, Han B, Du J, Lin JH (2001) J Solid State Chem 156:237

    Article  CAS  Google Scholar 

  25. Fletcher JG, West AR, Irvine JTS (1995) J Electrochem Soc 142:2650

    Article  CAS  Google Scholar 

  26. van Dijk T, Burggraaf AJ (1981) Phys Status Solid A 63:229

    Article  Google Scholar 

  27. Guo X, Sigle W, Fleig J, Maier J (2002) Solid States Ionics 154–155:555

    Article  Google Scholar 

  28. Moreo A, Yunoki S, Dagotto E (1999) Science 283:2034

    Article  CAS  Google Scholar 

  29. Goya GF, Souza JA, Jardim RF (2002) J Appl Phys 91:7932

    Article  CAS  Google Scholar 

  30. Cohn JL, Peterca M, Neumeier JJ (2004) Phys Rev B 70:214433

    Article  Google Scholar 

  31. Wang CC, Cui YM, Xie GL, Chen CP, Zhang LW (2005) Phys Rev B 72:064513

    Article  Google Scholar 

  32. Freitas RS, Mitchell JF, Schiffer P (2005) Phys Rev B 72:144429

    Article  Google Scholar 

  33. Biškup N, de Andrés A, Martinez JL (2005) Phys Rev B 72:024115

    Article  Google Scholar 

  34. Pimenov A, Biberacher M, Ivannikov D, Loidl A, Mukhin AA, Goncharov YuG, Balbashov AM (2006) Phys Rev B 73:220407

    Article  Google Scholar 

  35. See, for example, Lunkenheimer P, Fichtl R, Ebbinghaus SG, Loidl A (2004) Phys Rev B 70:17210; Lunkenheimer P, Bobnar V, Pronin AV, Ritus AI, Volvok AA, Loidl A (2002) Phys. Rev. B 66:052105

  36. Kimura T, Goto T, Shintani H, Ishizaka K, Arima T, Tokura Y (2003) Nature 426:55

    Article  CAS  Google Scholar 

Download references

Acknowledgements

This work was partially supported by the Brazilian agencies FAPESP (01/04231-0, 02/01856-1, and 05/53241-9) and CNPq (303272/2004-0, 306496/88-7, 300934/94-7, and 301661/2004-9).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to F. C. Fonseca.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fonseca, F.C., Souza, J.A., Muccillo, E.N.S. et al. Ac and dc magnetotransport properties of the phase-separated La0.6Y0.1Ca0.3MnO3 manganite. J Mater Sci 43, 503–509 (2008). https://doi.org/10.1007/s10853-007-1822-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10853-007-1822-4

Keywords

Navigation