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

Journal Article · Mon Oct 27 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4898613· OSTI ID:22308102

Sedykh, Vera D., E-mail: [e-mail] ^[1]

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1. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka (Russian Federation)

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.

• OSTI ID: 22308102
• Journal Information: AIP Conference Proceedings, Vol. 1622, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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