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Title: Temperature dependent dielectric and magnetic properties of GdFe{sub 1−x}Ni{sub x}O{sub 3} (0.0 ≤ x ≤ 0.3) orthoferrites

The polycrystalline samples of GdFe{sub 1−x}Ni{sub x}O{sub 3} (x = 0.0, 0.1, 0.2, 0.3) orthoferrites are synthesized via solid state reaction route. The Rietveld fitted X-ray diffraction patterns confirm the formation of orthorhombic phase with Pbnm space group for all the samples. The dielectric measurements reveal an enhancement in dielectric constant and tangent loss with increase in both temperature as well as Nickel (Ni) substitution. Dielectric studies are also in support with the induction of delocalized charge carriers in the GdFeO{sub 3} matrix with increasing Ni doping. Magnetization versus applied field study shows the non-saturating hysteresis curves suggesting the canted type antiferromagnetic behavior in the considered orthoferrites. Moreover, the observed magnetic behavior is complex and the doping affects the magnitude of magnetization differently at 300 K and 80 K. It has further been noticed that the incorporated Ni{sup 3+} ions enhances the symmetry of the magnetization curves. The as-prepared samples may find their applications in the decoupling capacitors.
Authors:
; ;  [1] ;  [2] ; ;  [3]
  1. Department of Physics, National Institute of Technology, Himachal Pradesh, Hamirpur 177005 (India)
  2. Centre for Material Science and Engineering, National Institute of Technology, Himachal Pradesh, Hamirpur 177005 (India)
  3. National Physical Laboratory, New Delhi 110012 (India)
Publication Date:
OSTI Identifier:
22304190
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 22; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; CAPACITORS; CHARGE CARRIERS; DECOUPLING; DIELECTRIC MATERIALS; FERRITES; GADOLINIUM COMPOUNDS; HYSTERESIS; LOSSES; MAGNETIC PROPERTIES; MAGNETIZATION; NICKEL COMPOUNDS; ORTHORHOMBIC LATTICES; PERMITTIVITY; POLYCRYSTALS; SOLIDS; SPACE GROUPS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION