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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


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Publikationens författare: V.S. Zakhvalinskii, E.A. Piliuk, S.V. Taran, A. Sklyarova, V.V. Matveev, J. Lindén, I. Zakharchuk
Förläggare: Elsevier
Publiceringsår: 2016
Tidskrift: Results in Physics
Tidskriftsakronym: Results in Physics
Volym: 6
Artikelns första sida, sidnummer: 1175
Artikelns sista sida, sidnummer: 1177
eISSN: 2211-3797


Abstrakt

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.


Nyckelord

Clusters, Fe-57 Mossbauer spectra, Perovskite manganites, Phase separation


Dokument


Senast uppdaterad 2019-15-11 vid 02:40