Published May 2004
| Version v1
Journal article
Magnetoresistance of sintered (Fe2O3)100-x(Fe3O4)x ferrites
Description
Magnetoresistance (MR) of the sintered (Fe2O3)100-x(Fe3O4)x ferrite with x=15-97 at% were investigated. The MR value was increased from 2.5% for x=15 to 4.8% for x=97 at room temperature with maximum applied field of 8.8 kOe. The plot of log ρ versus T-1/2 of all sintered samples exhibited a linear relationship, indicating that the dominant MR effect was spin-dependent tunneling between the Fe3O4 phase through α-Fe2O3 barrier. The percolation threshold for the conduction paths in this system is in the vicinity of x=40 at%
Additional details
Identifiers
- DOI
- 10.1016/j.jmmm.2003.12.745;
- PII
- S0304885303017529;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 272-276
- Journal Issue
- 6
- Journal Page Range
- p. 1776-1777
- ISSN
- 0304-8853
- CODEN
- JMMMDC
Conference
- Title
- International conference on magnetism
- Acronym
- ICM 2003
- Dates
- 27 Jul - 1 Aug 2003
- Place
- Rome (Italy)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36025216
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- FERRITES; IRON OXIDES; IRON-ALPHA; MAGNETORESISTANCE; SPIN; TEMPERATURE RANGE 0273-0400 K; TUNNEL EFFECT
- Descriptors DEC
- ANGULAR MOMENTUM; CHALCOGENIDES; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; FERRIMAGNETIC MATERIALS; IRON; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.