Phase stratification in the Nd1 − xBaxCoO3 − δ (0.3 ≤ x ≤ 0.54) system
D. D. KhalyavinInstitute of Solid-State and Semiconductor Physics, Belarussian Academy of Sciences, ul. Brovki 17, Minsk, 220072, BelarusI. O. TroyanchukInstitute of Solid-State and Semiconductor Physics, Belarussian Academy of Sciences, ul. Brovki 17, Minsk, 220072, BelarusN. KasperInstitute of Solid-State and Semiconductor Physics, Belarussian Academy of Sciences, ul. Brovki 17, Minsk, 220072, BelarusH. SzymczakInstitute of Physics, Polish Academy of Sciences, Warsaw, Poland
2001en
ABI
Аннотация
Slowly cooled Nd1 − x BaxCoO3 − δ samples were two-phase in the concentration interval 0.3 ≤ x ≤ 0.46. One of the phases had O-orthorhombic lattice distortions (Pbnm) characteristic of ferromagnetic samples with x ≤ 0.3, and the other phase had tetragonal distortions (P4/mmm) characteristic of samples with x ≥ 0.46. Tetragonal distortions were caused by ordering of Nd3+ and Ba2+ ions. Samples with ordered neodymium and barium ions (Nd1 − y Ba1 + y Co2O6 − γ at −0.08 ≤ y ≤ 0.08) experienced metal-dielectric and orientation magnetic phase transitions.
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