Header menu link for other important links
X
Structural, magnetic, transport and magnetocaloric properties of metamagnetic DyMn 0.5Co 0.5O 3
C. Ganeshraj, R. Pradheesh,
Published in
2012
Volume: 111
   
Issue: 7
Abstract
Rietveld refinement of the powder diffraction data revealed that DyMn 0.5Co 0.5O 3 (DMCO) crystallized in an orthorhombic structure containing distorted Mn/Co-O 6 octahedra (sp.gr Pnma; a 5.5922(1) Å, b 7.4987(1) Å, c 5.2606(1) Å). Below 85 K, the field cooled magnetization data shows a spontaneous magnetic ordering. The metamagnetic behavior of the sample is evident from the nature of variation of magnetization with applied magnetic field. The field dependent magnetization at 5 K, points out the Mn and Co ions are aligned ferromagnetically, whereas Dy and Mn-Co sublattices are coupled antiferromagnetically. The magnitude of isothermal magnetic entropy change, S Mmax is ∼ 9.30 J kg -1 K -1 in the vicinity of magnetic ordering of Dy 3+for the field change of 7 T, is appreciable to consider DyMn 0.5Co 0.5O 3 as a magnetic refrigerant at low temperatures. The temperature variation of electrical resistivity shows the highly insulating nature of the sample. © 2012 American Institute of Physics.
About the journal
JournalJournal of Applied Physics
ISSN00218979
Open AccessNo
Concepts (21)
  •  related image
    Applied magnetic fields
  •  related image
    CO IONS
  •  related image
    Electrical resistivity
  •  related image
    Field change
  •  related image
    FIELD-COOLED MAGNETIZATIONS
  •  related image
    Field-dependent magnetization
  •  related image
    Isothermal magnetic entropy change
  •  related image
    Low temperatures
  •  related image
    Magnetic refrigerants
  •  related image
    Magnetocaloric properties
  •  related image
    Metamagnetic
  •  related image
    Metamagnetic behavior
  •  related image
    Orthorhombic structures
  •  related image
    Powder diffraction
  •  related image
    Sub-lattices
  •  related image
    Temperature variation
  •  related image
    Electric conductivity
  •  related image
    Magnetic fields
  •  related image
    Manganese
  •  related image
    Rietveld refinement
  •  related image
    Magnetization