Published July 2009
| Version v1
Journal article
Exchange bias in ferrimagnetic-antiferromagnetic nanocomposite produced by mechanical attrition
- 1. Department of Physics, Sammilani Mahavidyalaya, Kolkata 700075 (India)
- 2. Department of Physics, National Institute of Technology, Durgapur 713209 (India)
- 3. Rammohan College, 102/1 Raja Rammohan Roy Sarani, Kolkata 700009 (India)
- 4. Gurudas College, Department of Physics, Kolkata 700054 (India)
- 5. DST Unit on Nanoscience, Indian Association for the Cultivation of Science, Kolkata 700032 (India)
Description
Nanoparticles comprising of magnetite (Fe3O4) core-hematite (α-Fe2O3) shell with mean diameter around 9 nm were synthesized by mechanical grinding. Zero-field-cooled (ZFC) and field-cooled (FC) magnetization and hysteresis loop measurements were carried out over the temperature range 5-300 K. Exchange bias varying from 140 to 10 Oe was observed. This is explained as arising due to ferrimagnetic-antiferromagnetic coupling at the nanointerfaces between the two phases. Analysis of data shows a pronounced increase in the effective anisotropy constant as the milling time is increased.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jmmm.2009.01.037Additional details
Identifiers
- DOI
- 10.1016/j.jmmm.2009.01.037;
- PII
- S0304-8853(09)00044-4;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 321
- Journal Issue
- 14
- Journal Page Range
- p. 2269-2275
- ISSN
- 0304-8853
- CODEN
- JMMMDC
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41009821
- Subject category
- S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Descriptors DEI
- ANISOTROPY; ANTIFERROMAGNETISM; FERRITES; GRINDING; HEMATITE; HYSTERESIS; IRON OXIDES; MAGNETITE; MAGNETIZATION; NANOSTRUCTURES; PARTICLES; PHASE STUDIES; SHELLS; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K
- Descriptors DEC
- CHALCOGENIDES; COMMINUTION; FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; IRON ORES; MACHINING; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; MINERALS; ORES; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.