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Structural and magnetic phase transitions in Pr 0.15 Sr 0.85 MnO 3 at high pressure

Author

Listed:
  • D. P. Kozlenko
  • N. T. Dang
  • Z. Jirák
  • S. E. Kichanov
  • E. V. Lukin
  • B. N. Savenko
  • L. S. Dubrovinsky
  • C. Lathe
  • C. Martin

Abstract

The crystal and magnetic structures of Pr 0.15 Sr 0.85 MnO 3 manganite have been studied by means of powder X-ray and neutron diffraction in the temperature range 10–400 K at high external pressures up to 55 and 4 GPa, respectively. A structural phase transition from cubic to tetragonal phase upon compression was observed, with large positive pressure coefficient of transition temperature dT ct /dP=28(2) K/GPa. The C-type antiferromagnetic (AFM) ground state is formed below T N ≈ 260 K at ambient pressure. While at ambient pressure the structural and magnetic transition temperatures are close, T ct ~ T N , upon compression they become decoupled with T N ≪ T ct due to much weaker T N pressure dependence with coefficient dT N /dP=3.8(1) K/GPa. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Suggested Citation

  • D. P. Kozlenko & N. T. Dang & Z. Jirák & S. E. Kichanov & E. V. Lukin & B. N. Savenko & L. S. Dubrovinsky & C. Lathe & C. Martin, 2010. "Structural and magnetic phase transitions in Pr 0.15 Sr 0.85 MnO 3 at high pressure," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 77(3), pages 407-411, October.
    • Handle: RePEc:spr:eurphb:v:77:y:2010:i:3:p:407-411
    DOI: 10.1140/epjb/e2010-00284-1
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