PRESNIAKOV, Igor; DEMAZEAU, Gérard; BARANOV, Alexey; SOBOLEV, Alexey; POKHOLOK, Konstantin

doi:10.1103/PhysRevB.71.054409

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PRESNIAKOV, Igor
Chair of Radiochemistry, Department of Chemistry

DEMAZEAU, Gérard
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

BARANOV, Alexey
Chair of Radiochemistry, Department of Chemistry

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Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2005, vol. 71, n° 5, p. 054409 (7 p.)

American Physical Society

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Mössbauer spectroscopy has been used for following the insulator -> metal transition versus temperature in ANiO3 perovskites (NdNiFe0.02O3 and LuNiFe0.02O3). The evolution of the number of 57Fe sites and the isomer-shift value at the transition bring important local information taking into account the role of the different factors (structural, geometrical, and bond covalency). Mössbauer measurements have been made as a function of temperature to study electronic and vibrational behavior of the 57Fe probe atoms in the nickelate structure.< Leer menos

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Metal-insulator transitions

Mossbauer spectra

Nickelates

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Mössbauer characterization of 57Fe dopant ions across the insulator-metal transition in ANi0.98Fe0.02O3 (A = Nd, Lu) perovskites.

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