Effect of Oxygen Pressure on the Thermodynamic Stability of Nd0.85Ba0.15MnO3


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Abstract

This paper presents a study of the structure of the Nd0.85Ba0.15MnO3 compound and its stability at a reduced oxygen partial pressure. Structural characteristics of Nd0.85Ba0.15MnO3 have been determined by X-ray diffraction. The sequence of phase transformations in the Nd–Ba–Mn–O system as the oxygen pressure decreases from atmospheric to –21 atm has been identified by a static method using a vacuum circulation apparatus.

About the authors

O. M. Fedorova

Institute of Metallurgy, Ural Branch, Russian Academy of Sciences

Author for correspondence.
Email: fom55@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016

L. B. Vedmid’

Institute of Metallurgy, Ural Branch, Russian Academy of Sciences; Yeltsin Federal University

Email: fom55@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016; ul. Mira 19, Yekaterinburg, 620002

V. M. Dimitrov

Institute of Metallurgy, Ural Branch, Russian Academy of Sciences

Email: fom55@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016

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