Published April 4, 2014
| Version v1
Journal article
Metal-like to insulator transition in Lu3Fe5O12
- 1. Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai-600 025 (India)
- 2. Department of Physics, MIT Campus, Anna University, Chennai-600 044 (India)
Description
Polycrystalline Lu3Fe5O12, prepared using the solid state reaction method, has Fe in the mixed valence state as inferred from the X-ray photoelectron spectroscopy. A spectral change in the impedance plot at 343 K is attributed to metal-like to insulator transition (MIT), which is analyzed in terms of localized and delocalized eg electrons. The change in the slope at 343 K in the DC conductivity plot also proves the MIT. The dependence of Z′ on temperature and Z″ on frequency clearly substantiates the presence of localized electrons up to 343 K and delocalized electrons above 343 K.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physleta.2014.03.018Additional details
Identifiers
- DOI
- 10.1016/j.physleta.2014.03.018;
- PII
- S0375-9601(14)00271-0;
Publishing Information
- Journal Title
- Physics Letters. A
- Journal Volume
- 378
- Journal Issue
- 20
- Journal Page Range
- p. 1402-1406
- ISSN
- 0375-9601
- CODEN
- PYLAAG
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46023800
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- DIELECTRIC MATERIALS; ELECTRONS; FERRITE GARNETS; FERRITES; IMPEDANCE; LOSSES; LUTETIUM COMPOUNDS; MAGNETIC PROPERTIES; OXYGEN; PERMITTIVITY; PHASE TRANSFORMATIONS; POLYCRYSTALS; RARE EARTHS; SOLIDS; TEMPERATURE RANGE 0273-0400 K; TRANSITION TEMPERATURE; VACANCIES; X-RAY PHOTOELECTRON SPECTROSCOPY
- Descriptors DEC
- CRYSTAL DEFECTS; CRYSTAL STRUCTURE; CRYSTALS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; ELECTRON SPECTROSCOPY; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; LEPTONS; MAGNETIC MATERIALS; MATERIALS; METALS; MINERALS; NONMETALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PHYSICAL PROPERTIES; POINT DEFECTS; RARE EARTH COMPOUNDS; SPECTROSCOPY; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.