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Journal of Structural Chemistry

, Volume 59, Issue 8, pp 2023–2028 | Cite as

Transformation Of Magnetic Transitions and Crystal Structure of NdBaMn2O6 At Diamagnetic Dilution with Ti4+ Ions in the Mn-Sublattice

  • E. V. Sterkhov
  • S. A. Uporov
Article
  • 6 Downloads

Abstract

Magnetic and structural transitions in NdBaMn2−xTixO6 (x = 0, 0.2) samples obtained by the topotactic procedure at 1373 K and lgPO2=−19 atm are studied by low-temperature X-ray diffraction and magnetometry in 1–5 T fields. Undoped double manganite undergoes a reversible ferromagnet—antiferromagnet magnetic phase transition at ТN = 278 K without changing symmetry. The 20 mol.% titanium substitution for manganese causes a decrease in symmetry from the tetragonal space group P4/mmm to the orthorhombic space group Pmmm and a shift of magnetic transitions to lower temperatures. Oxide NdBaMn2O6 demonstrates high values of the magnetocaloric effect in the temperature range 250–315 K.

Keywords

double manganites ordering magnetocaloric effect magnetic phase transitions 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Institute of Metallurgy, Ural BranchRussian Academy of SciencesEkaterinburgRussia

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