Mössbauer characterization of 57Fe dopant ions across the insulator-metal transition in ANi0.98Fe0.02O3 (A = Nd, Lu) perovskites.
Langue
en
Article de revue
Ce document a été publié dans
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2005, vol. 71, n° 5, p. 054409 (7 p.)
American Physical Society
Résumé en anglais
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 ...Lire la suite >
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.< Réduire
Mots clés en anglais
Metal-insulator transitions
Mossbauer spectra
Nickelates
Origine
Importé de halUnités de recherche