Published April 8, 2009 | Version v1
Journal article Metadata-only

On the dielectric dispersion and absorption in nanosized manganese zinc mixed ferrites

Creators

  • 1. Department of Physics, Cochin University of Science and Technology, Cochin-682 022, Kerala (India)
  • 2. Department of Physics, Vimala College, Thrissur-680 009, Kerala (India)
  • 3. Bio-Nano Electronics Research Centre, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama-350-8585 (Japan)
  • 4. Department of Physics, College of Science, P O Box 36, Sultan Qaboos University, PC 123, Muscat, Sultanate of Oman (Oman)
  • 5. Department of Materials Engineering, Indian Institute of Science, Bangalore-560 012 (India)

Description

The temperature and frequency dependence of dielectric permittivity and dielectric loss of nanosized Mn1-xZnxFe2O4 (for x = 0, 0.2, 0.4, 0.6, 0.8, 1) were investigated. The impact of zinc substitution on the dielectric properties of the mixed ferrite is elucidated. Strong dielectric dispersion and broad relaxation were exhibited by Mn1-xZnxFe2O4. The variation of dielectric relaxation time with temperature suggests the involvement of multiple relaxation processes. Cole-Cole plots were employed as an effective tool for studying the observed phenomenon. The activation energies were calculated from relaxation peaks and Cole-Cole plots and found to be consistent with each other and indicative of a polaron conduction.

Availability note (English)

Available from http://dx.doi.org/10.1088/0953-8984/21/14/146006

Additional details

Identifiers

DOI
10.1088/0953-8984/21/14/146006;
PII
S0953-8984(09)98428-4;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
21
Journal Issue
14
Journal Page Range
[12 p.]
ISSN
0953-8984
CODEN
JCOMEL

Conference

Title
International conference on nanoscience and nanotechnology
Dates
25-29 Feb 2008
Place
Melbourne (Australia)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41012474
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ABSORPTION; ACTIVATION ENERGY; DIELECTRIC MATERIALS; DISPERSIONS; FERRITE; FERRITES; FREQUENCY DEPENDENCE; IRON COMPOUNDS; MANGANESE COMPOUNDS; NANOSTRUCTURES; OXYGEN COMPOUNDS; PERMITTIVITY; RELAXATION; RELAXATION TIME; VARIATIONS; ZINC COMPOUNDS
Descriptors DEC
ALLOYS; CARBON ADDITIONS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; ENERGY; FERRIMAGNETIC MATERIALS; IRON ALLOYS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SORPTION; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS