Advertisement

Negative Oxygen Isotope Effect in Manganites with an Ordered Cation Arrangement in a High Magnetic Field

  • A. N. Taldenkov
  • V. V. Snegirev
  • N. A. Babushkina
  • V. S. Kalitka
  • A. R. Kaul’
Order, Disorder, and Phase Transition in Condensed System

Abstract

The oxygen isotope effect in PrBaMn216-18 O5.97 manganite with an ordered cation arrangement is studied. The field dependences of magnetic susceptibility and magnetization are measured in the temperature range 100–270 K and magnetic fields up to 32 T. A significant increase in the temperature of the spin-reorientation antiferromagnet–ferromagnet phase transition is detected in samples enriched in heavy oxygen 18O (negative isotope effect). The transition temperature and the isotope effect depend strongly on the magnetic field. An H–T phase diagram is plotted for samples with various isotope compositions. An analysis of the experimental results demonstrates that the detected negative isotope effect and the giant positive isotope effect revealed earlier in doped manganites have the same nature. The mechanisms of appearance of isotope effects are discussed in terms of the double exchange model under a polaron narrowing of the free carrier band.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Y. Tokura, in Colossal Magnetoresistive Oxides, Vol. 2 of Advances in Condensed Matter Science (Gordon Breach Sci., Amsterdam, 2000), p. 1.Google Scholar
  2. 2.
    G. M. Zhao, K. Conder, H. Keller, et al., Nature (London, U.K.) 381, 676 (1996).ADSCrossRefGoogle Scholar
  3. 3.
    I. Isaac and J. P. Frank, Phys. Rev. B 57, R5602 (1998).ADSCrossRefGoogle Scholar
  4. 4.
    J. P. Frank, I. Isaac, and W. Chen, Phys. Rev. B 58, 5189 (1998).ADSCrossRefGoogle Scholar
  5. 5.
    G.-M. Zhao, H. Keller, R. L. Greene, et al., in Physics of Manganites (Kluwer, New York, 1999), p. 221.Google Scholar
  6. 6.
    G. M. Zhao, H. Keller, J. Hofer, et al., Solid State Commun. 104, 57 (1997).ADSCrossRefGoogle Scholar
  7. 7.
    N. A. Babushkina, L. M. Belova, O. Yu. Gorbenko, et al., Nature (London, U.K.) 391, 159 (1998).ADSCrossRefGoogle Scholar
  8. 8.
    N. A. Babushkina, L. M. Belova, V. I. Ozhogin, et al., J. Appl. Phys. 83, 7369 (1998).ADSCrossRefGoogle Scholar
  9. 9.
    N. A. Babushkina, A. N. Taldenkov, L. M. Belova, et al., Phys. Rev. B 62, R6081 (2000).ADSCrossRefGoogle Scholar
  10. 10.
    N. A. Babushkina, A. N. Taldenkov, E. A. Chistotina, et al., J. Magn. Magn. Mater. 242–245, 640 (2002).CrossRefGoogle Scholar
  11. 11.
    Guo-meng Zhao, K. Ghosh, and R. L. Green, J. Phys.: Condens. Matter 10, L737 (1998).Google Scholar
  12. 12.
    Guo-meng Zhao, K. Ghosh, H. Keller, and R. L. Green, Phys. Rev. B 59, 81 (1999).ADSCrossRefGoogle Scholar
  13. 13.
    R. Mahesh and M. Itoh, Austr. J. Phys. 52, 235 (1999).ADSCrossRefGoogle Scholar
  14. 14.
    G.-M. Zhao, K. Conder, H. Keller, et al., Phys. Rev. B 60, 11914 (1999).ADSCrossRefGoogle Scholar
  15. 15.
    A. N. Taldenkov, N. A. Babushkina, A. V. Inyushkin, and R. Suryanarayanan, Bull. Russ. Acad. Sci.: Phys. 73, 115 (2009).CrossRefGoogle Scholar
  16. 16.
    A. N. Taldenkov, N. A. Babushkina, A. V. Inyushkin, et al., Solid State Phenom. 190, 669 (2012).CrossRefGoogle Scholar
  17. 17.
    A. Taldenkov, N. Babushkina, A. Inyushkin, et al., J. Magn. Magn. Mater. 300, e155 (2006).CrossRefGoogle Scholar
  18. 18.
    N. A. Babushkina, A. N. Taldenkov, A. V. Inyushkin, et al., Phys. Rev. B 78, 214432 (2008).ADSCrossRefGoogle Scholar
  19. 19.
    A. A. M. Aliev, A. G. Gamzatov, A. B. Batdalov, et al., Philos. Mag. Lett. 91, 354 (2011).ADSCrossRefGoogle Scholar
  20. 20.
    N. M. Plakida, JETP Lett. 71, 493 (2000).ADSCrossRefGoogle Scholar
  21. 21.
    D. M. Edwards, Adv. Phys. 51, 1251 (2002).ADSGoogle Scholar

Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • A. N. Taldenkov
    • 1
  • V. V. Snegirev
    • 2
  • N. A. Babushkina
    • 1
  • V. S. Kalitka
    • 3
  • A. R. Kaul’
    • 3
  1. 1.Russian Research Centre “Kurchatov Institute,”MoscowRussia
  2. 2.Physical FacultyMoscow State UniversityMoscowRussia
  3. 3.Chemical FacultyMoscow State UniversityMoscowRussia

Personalised recommendations