Browsing by Author "Fitch, Andrew"

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    New mixed perovskite RCo0.5Cr0.5O3 (R = Dy, Ho, Er) as a potential thermoelectric and sensory material
    (Lviv Polytechnic Publishing House, 2016) Hreb, Vasyl; Vasylechko, Leonid; Prots, Yurii; Fitch, Andrew; Lviv Polytechnic National University; Max-Planck-Institut für Chemische Physik fester Stoffe; ESRF-The European Synchrotron
    The mixed earth rare cobaltites and chromites with general formula RCo0.5Cr0.5O3 (R = Dy, Ho, Er) were obtained by solid state reaction in air at 1373 K. Based on high temperature X-ray synchrotron powder diffraction data in range temperature 298 –1273 K abnormal thermal expansion of lattice dimensions was observed. Thermal expansion coefficient showed maxima, which point on insulator-metal transition. Abnormal behavior is associated with changes of spin state of Co3+ ions.