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Title: The features of structural transformations in lanthanum manganites La{sub 1−x}A{sub x}MnO{sub 3+δ} (A = Ca, Sr, Ba)

In this work, the effect of the ionic radius and concentration of a doping element on the features of the structural transformations in polycrystalline lanthanum manganites, La{sub 1−x}A{sub x}MnO{sub 3+δ} (A = Ca, Sr, Ba), has been studied by Mössbauer spectroscopy and X-ray diffraction analysis. For Mössbauer investigations, a small amount of {sup 57}Fe (2 at%) Mössbauer isotope was introduced into the samples. It follows from the analysis of the obtained data that both common features of the structural transformations and differences between them exist in lanthanum manganites depending on ionic radius and concentration of a doping element.
Authors:
 [1]
  1. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka (Russian Federation)
Publication Date:
OSTI Identifier:
22308102
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1622; Journal Issue: 1; Conference: Conference on Moessbauer spectroscopy in materials science 2014, Hlohovec u Breclavi (Czech Republic), 26-30 May 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CONCENTRATION RATIO; IRON 57; LANTHANUM COMPOUNDS; MANGANATES; PHASE TRANSFORMATIONS; POLYCRYSTALS; STRONTIUM COMPOUNDS; X-RAY DIFFRACTION