New synthesis route for obtaining carbon-free hexagonal RE manganites via novel simple individual precursors. The interplay between magnetic and thermodynamic properties of hexagonal RMnO3 (R=Ho–Yb, Y)

Andrey Gavrikov, Pavel Koroteev, Andrey Ilyukhin, Nikolay Efimov, Andreas K. Kostopoulos, Aleksandr Baranchikov, Aleksandr Tyurin, Denis Kirdyankin, Konstantin Gavrichev, Floriana Tuna, Zhanna Dobrokhotova

    Research output: Contribution to journalArticlepeer-review

    Abstract

    New simple heterometallic ionic complexes [Mn(MeCN)6][R(NO3)5] (R = Ho (1), Er (2), Tm (3), Yb (4), Y (5)) were synthesised, structurally characterized and their thermal behavior was investigated. Complexes under study were proposed as precursors for corresponding pure, carbon-free rare-earth hexagonal manganites RMnO3 (P63cm). Procedures for the preparation of RMnO3 were optimized. The magnetic behavior of RMnO3 was studied. The Cp(T) dependences for RMnO3 in the range of 5–340 K were first measured by adiabatic calorimetry, and the smoothed values of the standard thermodynamic functions Cp0(T), S0(T), Φ0(T), and ΔH0(T) were calculated for the first time. The interplay between magnetic and thermodynamic properties of RMnO3 was shown.
    Original languageEnglish
    Pages (from-to)184-193
    JournalPolyhedron
    Volume122
    Early online date27 Nov 2016
    DOIs
    Publication statusPublished - 28 Jan 2017

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