Advertisement

Hyperfine Interactions

, Volume 197, Issue 1–3, pp 83–88 | Cite as

Perturbed angular correlations investigations on YMnO3 multiferroic manganite

  • T. M. MendonçaEmail author
  • A. M. L. Lopes
  • J. N. Gonçalves
  • J. G. Correia
  • P. B. Tavares
  • V. S. Amaral
  • C. Darie
  • J. P. Araujo
Article

Abstract

The Perturbed Angular Correlation (PAC) technique was applied to study the yttrium local environment in YMnO3 multiferroic manganite. The electric field gradients (EFG) at the Y site have been measured as function of temperature, covering both ferroelectric and magnetic transitions. The results were compared with point charge model (PCM) calculations. The experimental results show two different EFG distributions for all temperatures. Only one can be directly attributed to the yttrium crystalline site in the hexagonal structure.

Keywords

PAC Manganites Phase separation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Dagotto, E.: Complexity in strongly correlated electronic systems. Science 309, 257 (2005)CrossRefADSGoogle Scholar
  2. 2.
    Kimura, T., et al.: Magnetic control of ferroelectric polarization. Nature 426, 55 (2003)CrossRefADSGoogle Scholar
  3. 3.
    Fiebig, M., et al.: Observation of couples magnetic and electric domains. Nature 419, 818 (2002)CrossRefADSGoogle Scholar
  4. 4.
    Van Aken, B.B., et al.: The origin of ferroelectricity in magnetoelectric YMnO3. Nat. Mater. 3, 164 (2004)CrossRefADSGoogle Scholar
  5. 5.
    Rodriguez-Carvajal, J.: Recent advances in magnetic structure determination by neutron powder diffraction. Physica B 192, 55 (1993)CrossRefADSGoogle Scholar
  6. 6.
    Kugler, E., et al.: The new CERN-ISOLDE on-line mass-separator facility at the PS-Booster. Nucl. Instrum. Methods Phys. Res. B 70, 41 (1992)CrossRefADSGoogle Scholar
  7. 7.
    Araujo, J.P., et al.: Electrical field gradient studies on La1 − xCdxMnO3 + δ system. Hyperfine Interact. 158, 347 (2004)CrossRefADSGoogle Scholar
  8. 8.
    Butz T., et al.: A ‘TDPAC-Camera’. Nucl. Instrum. Methods Phys. Res. B 47, 417 (1989)Google Scholar
  9. 9.
    Barradas, N.P., et al.: Magnetic anisotropy and temperature dependence of the hyperfine fields of single-crystalline cobalt. Phys. Rev. B 47, 8763 (1993)CrossRefADSGoogle Scholar
  10. 10.
    Schmidt, P.C., et al.: Effect of self-consistency and crystalline potential in the solid state on nuclear quadrupole Sternheimer antishielding factors in closed-shell ions. Phys. Rev. B 22, 4167 (1980)CrossRefADSGoogle Scholar
  11. 11.
    Gupta, R.P., et al.: Sternheimer shielding-antishielding.II. Phys. Rev. A 8, 1169 (1973)CrossRefADSGoogle Scholar
  12. 12.
    Feiock, F.D., et al.: Atomic susceptibilities and shielding factors. Phys. Rev. 187, 39 (1969)CrossRefADSGoogle Scholar
  13. 13.
    Lee, S., et al.: Giant magneto-elastic coupling in multiferroic hexagonal manganites. Nature 451, 805 (2008)CrossRefADSGoogle Scholar
  14. 14.
    Van Aken, B.B., et al.: Hexagonal YMnO3. Acta Crystallogr. C 57, 230 (2001)CrossRefGoogle Scholar
  15. 15.
    Lopes, A.M.L., et al.: Percolative transition on ferromagnetic insulator manganites: uncorrelated to correlated polaron clusters. Phys. Rev. B 73, 100408(R) (2006)CrossRefMathSciNetADSGoogle Scholar
  16. 16.
    Lopes, A.M.L., et al.: New phase transition in the Pr1 − xCaxMnO3 system: evidence for electrical polarization in charge ordered manganites. Phys. Rev. Lett. 100, 155702 (2008)CrossRefADSGoogle Scholar
  17. 17.
    Lonkai, Th., et al.: Development of high-temperature phase of hexagonal manganites. Phys. Rev. B 69, 134108 (2004)CrossRefADSGoogle Scholar
  18. 18.
    Mendonça, T.M., et al.: To be submittedGoogle Scholar
  19. 19.
    Jeong, I.-K., et al.: High-temperature structural evolution of hexagonal multiferroic YMnO3 and YbMnO3. J. Appl. Crystallogr. 40, 730 (2007)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • T. M. Mendonça
    • 1
    • 6
    Email author
  • A. M. L. Lopes
    • 2
  • J. N. Gonçalves
    • 3
  • J. G. Correia
    • 2
    • 4
  • P. B. Tavares
    • 5
  • V. S. Amaral
    • 3
  • C. Darie
    • 6
  • J. P. Araujo
    • 1
  1. 1.IFIMUP and IN—Institute of Nanosciences and NanotechnologiesPortoPortugal
  2. 2.Centro de Fisica Nuclear da Universidade de LisboaLisboaPortugal
  3. 3.Departamento de Fisica and CICECOUniversidade de AveiroAveiroPortugal
  4. 4.Instituto Tecnologico e NuclearSacavemPortugal
  5. 5.CQVR—Departamento de QuimicaUniv. Tras-os-Montes e Alto DouroVila RealPortugal
  6. 6.Institut NeelCNRSGrenobleFrance

Personalised recommendations