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- Title
Structural and Magnetic Properties of the New LaSrCoFeO Triple Perovskite.
- Authors
Albornoz, Julio; Landínez Téllez, David; Roa-Rojas, Jairo; Munévar, Julian; Baggio-Saitovich, Elisa
- Abstract
In this work, we report synthesis and characterization of the new LaSrCoFeO triple perovskite material. The samples were produced by the solid-state reaction method. The analyses of the XRD patterns were made by Rietveld refinement through the GSAS code. The results reveal that the material crystallizes in an orthorhombic complex perovskite, space group Immm (#71) with lattice parameters a=5.4314(3) Ǻ, b=5.4583(3) Ǻ and c=7.7018(2) Ǻ. SEM micrographs evidence a strongly diffused granular morphology with mean grain size of 2 μm and the EDX spectra show that the chemical composition of samples are in good agreement with the nominal values of the stoichiometric formula. Fe Mössbauer spectroscopy recorded at 300 K reveals two sites in concordance with the X-ray diffraction measurements, and its valence state is +3, as determined from the isomer shift found. At 4.2 K magnetic ordering with canting of the Fe moments is found. Measurements of the magnetization as a function of temperature permitted us to determine the ferromagnetic characteristic of material with an effective magnetic moment of 9.7 μ.
- Subjects
MAGNETIC properties of perovskite; PEROVSKITE spectra; SOLID state chemistry; X-ray diffraction; STOICHIOMETRY; FERROMAGNETISM; MAGNETIC moments
- Publication
Journal of Superconductivity & Novel Magnetism, 2013, Vol 26, Issue 6, p2313
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-012-1425-4