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Title: Effect of gamma irradiation on dielectric properties of manganese zinc nanoferrites

Naocrystalline ferrites Mn{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (x = 0.00, 0.25, 0.50, 0.75 and 1.00) were prepared by combustion method. The samples were characterized by XRD technique. The dielectric measurements were carried out in the frequency range 40 Hz to 100 MHz at room temperature. All the measurements were performed before and after gamma {sup 60}Co irradiation. The X-ray diffraction patterns revealed the formation of nanocrystalline and single-phase spinel structure. The lattice parameter decrease with zinc ion concentration and increased after the irradiation due to ferric ions of smaller radius converted to ferrous ions of larger radius. The dielectric behavior is attributed to the Maxwell-Wagner type interfacial polarization. The dielctric contant, dielectric loss and AC conductivity enhanced after the irradiation.
Authors:
;  [1] ;  [2] ;  [3] ;  [4]
  1. Department of Physics, Banaglore University, Bangalore-560056, Karnataka (India)
  2. Department of Science, SJM Polytechnic, Chitradurga- 5770502, Karnataka (India)
  3. Center for Application of Radioisotopes and Radiation Technology, Mangalore University, Mangalore-574199 (India)
  4. Department of Physics,Tumkur University,Tumkur-572103, Karnataka (India)
Publication Date:
OSTI Identifier:
22269444
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; COBALT 60; CRYSTALS; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; FERRITE; FERRITES; GAMMA RADIATION; IRRADIATION; LATTICE PARAMETERS; MANGANESE; MHZ RANGE; NANOSTRUCTURES; POLARIZATION; SPINELS; X-RAY DIFFRACTION; ZINC; ZINC IONS