57Fe Mössbauer spectroscopy investigation of La0.7Ca0.3Mn0.5Fe0.5O3

V.S. Zakhvalinskii; E.A. Piliuk; S.V. Taran; A. Sklyarova; V.V. Matveev; J. Lindén; I. Zakharchuk

Results in Physics (Jan 2016)

57Fe Mössbauer spectroscopy investigation of La0.7Ca0.3Mn0.5Fe0.5O3

V.S. Zakhvalinskii,
E.A. Piliuk,
S.V. Taran,
A. Sklyarova,
V.V. Matveev,
J. Lindén,
I. Zakharchuk

Affiliations

V.S. Zakhvalinskii: Belgorod State National Research University, 85, Pobedy St., Belgorod 308015, Russia; Corresponding author.
E.A. Piliuk: Belgorod State National Research University, 85, Pobedy St., Belgorod 308015, Russia
S.V. Taran: Belgorod State National Research University, 85, Pobedy St., Belgorod 308015, Russia
A. Sklyarova: Extreme Energy-Density Research Institute, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan; Department of Physics, Åbo Akademi University, FI-20500 Turku, Finland
V.V. Matveev: Faculty of Physics, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
J. Lindén: Department of Physics, Åbo Akademi University, FI-20500 Turku, Finland
I. Zakharchuk: Department of Physics and Mathematics, Lappeenranta University of Technology, FI-53851 Lappeenranta, Finland

Journal volume & issue: Vol. 6
pp. 1175 – 1177

Abstract

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A La0.7Ca0.3Mn0.5Fe0.5O3 (LCMFO) ceramic sample was produced using conventional solid-state reactions. According to the X-ray diffraction data, the obtained sample has an orthorhombic space group Pnma (a = 5.482(2) Å, b = 7.739(3) Å, c = 5.446(3) Å). Magnetic properties of the obtained sample were studied by 57Fe Mössbauer spectroscopy in the temperature interval of 77–423 K. All spectra recorded at room temperature exhibit the presence of trivalent Fe. Mössbauer spectra of the LCMFO sample show the presence of two intensive components: a paramagnetic doublet and a magnetic sextet, and several weak magnetic sextets. Within the investigated temperature range, phase separation and coexistence of a paramagnetic matrix and a phase of nano-sized antiferromagnetic clusters both below and above TN were found. Keywords: 57Fe Mössbauer spectra, Perovskite manganites, Phase separation, Clusters

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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