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Title: Structural and magnetic properties of La{sub 1−x}Ce{sub x}Fe{sub 1−x}Cr{sub x}O{sub 3} orthoferrite prepared by co-precipitation method

Graphical abstract: TEM micrographs of La{sub 1−x}Ce{sub x}Fe{sub 1−x}Cr{sub x}O{sub 3} for x = 0.0. - Highlights: • The composition of La{sub 1−x}Ce{sub x}Fe{sub 1−x} Cr{sub x}O{sub 3} was prepared by co-precipitation method. • X-ray diffraction showed orthorhombic structure with space group Pnma. • With increasing Ce and Cr content, a decrease of the unit cell volume. • Enhancement in the coercivity (H{sub c}) with increasing Ce and Cr content. • Reduction of M{sub s} and M{sub r} up to x = 0.15 and increases with further increases of x. - Abstract: Nanocrystalline orthoferrites with the composition of La{sub 1−x}Ce{sub x}Fe{sub 1−x} Cr{sub x}O{sub 3} where (x = 0, 0.1, 0.15 and 0.2) were prepared by co-precipitation method. The structural and magnetic properties of the La{sub 1−x}Ce{sub x}Fe{sub 1−x}Cr{sub x}O{sub 3} system have been investigated. X-ray diffraction showed the formation of orthorhombic structure with space group Pnma for different compositions. With increasing Ce and Cr content, lattice parameters a and c were found to decrease while b increases, resulting in a decrease of the unit cell volume. The crystallite size was calculated from XRD data and compared with that obtained from TEM micrographs. Vibrating sample magnetometer measurements reveal an enhancementmore » in the coercivity (H{sub c}) with increasing Ce and Cr content and reduction of saturation magnetization (M{sub s}) and remnant magnetization (M{sub r}) up to x = 0.15 and increases with further increases of x. The magnetic susceptibility measurements vs. temperature showed canted-antiferromagnetic (AFM) in which the Neel temperature is increasing with Ce and Cr content.« less
Authors:
 [1] ;  [2] ;  [3]
  1. Solid State Electronics Laboratory, Solid State Physics Department, Physics Division, National Research Centre, Dokki, Giza, P.O. 12622 (Egypt)
  2. College of Science and Arts, Qassim University, Oyoon Aljewa (Saudi Arabia)
  3. Physics Department, Faculty of Science, Damascus University (Syrian Arab Republic)
Publication Date:
OSTI Identifier:
22475807
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 66; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; CERIUM COMPOUNDS; CHROMIUM COMPOUNDS; COPRECIPITATION; IRON COMPOUNDS; LANTHANUM COMPOUNDS; LATTICE PARAMETERS; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; NANOSTRUCTURES; NEEL TEMPERATURE; ORTHORHOMBIC LATTICES; OXYGEN COMPOUNDS; SPACE GROUPS; TRANSMISSION ELECTRON MICROSCOPY; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION