Published August 2013 | Version v1
Journal article Metadata-only

Synthesis, structural and magnetic properties of La1 − xCaxFeO3 prepared by the co-precipitation method

Creators

  • 1. Al Azhar University, Physics Department, Faculty of Science (Egypt)
  • 2. Al Azhar University, Chemistry Department, Faculty of Science (Egypt)

Description

Lanthanum calcium ferrite La1 − xCaxFeO3 (where x = 0.05, 0.10 and 0.15) were synthesized by co-precipitation method. The structural refinement confirmed that all samples formed with the orthorhombic (Pbmn) structure with small impurities (LaFeO3 and Fe2O3). Fourier transformed infrared spectroscopy (FT-IR) results indicated that the electronic imbalance caused by the partial substitution for La3 +  by Ca2 +  is compensated by an oxidation state of iron ions. Mössbauer spectra at room temperature (RT) show five 6-line sub-spectra corresponding to Fe3 +  (superposition of 3 spectra), Fe4 +  and Fe5 +  in all samples. Magnetic hysteresis loops of these samples showed a significant weak ferromagnetic component at RT

Additional details

Identifiers

DOI
10.1007/s10751-012-0640-5;

Publishing Information

Journal Title
Hyperfine Interactions
Journal Volume
222
Journal Issue
1
Journal Page Range
p. 57-67
ISSN
0304-3843
CODEN
HYINDN

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45030508
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CALCIUM; COPRECIPITATION; FERRITE; FERRITES; FOURIER TRANSFORM SPECTROMETERS; FOURIER TRANSFORMATION; HYSTERESIS; IMPURITIES; INFRARED SPECTRA; IRON IONS; IRON OXIDES; LANTHANUM; MAGNETIC PROPERTIES; ORTHORHOMBIC LATTICES; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K
Descriptors DEC
ALKALINE EARTH METALS; ALLOYS; CARBON ADDITIONS; CHALCOGENIDES; CHARGED PARTICLES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELEMENTS; FERRIMAGNETIC MATERIALS; INTEGRAL TRANSFORMATIONS; IONS; IRON ALLOYS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; MEASURING INSTRUMENTS; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRECIPITATION; RARE EARTHS; SEPARATION PROCESSES; SPECTRA; SPECTROMETERS; TEMPERATURE RANGE; TRANSFORMATIONS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2012 Springer Science+Business Media B.V.