Published January 2005
| Version v1
Journal article
Magnetic Behaviour of Nano-Particles of Ni0.8Cu0.2Fe2O4
Description
Nano-particles of Ni0.8Cu0.2Fe2O4 have been synthesized by the co-precipitation method. Langevin function fitting of the superparamagnetic M-N curve at 290 K provides a log-normal distribution with median diameter of 30 A and standard deviation of 0.4. Outside a core of ordered spins, moments in the surface layer are disordered. Magnetization evolves over a long period of time t going linearly with log t. Magnetic anisotropy which was estimated by fitting the M-log t curve shows many fold increase over that of bulk particle sample. Major contribution to this enhancement comes form the disordered surface spins.
Additional details
Identifiers
Publishing Information
- Journal Title
- Hyperfine Interactions
- Journal Volume
- 160
- Journal Issue
- 1-4
- Journal Page Range
- p. 219-225
- ISSN
- 0304-3843
- CODEN
- HYINDN
Conference
- Title
- International workshop on nanomaterials, magnetic ions and magnetic semiconductors studied mostly by hyperfine interactions
- Acronym
- IWNMS 2004
- Dates
- 10-14 Feb 2004
- Place
- Barona (India)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43032060
- Subject category
- S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANISOTROPY; COPPER COMPOUNDS; COPRECIPITATION; DISTRIBUTION; FERRITES; LANGEVIN EQUATION; LAYERS; MAGNETIC PROPERTIES; MAGNETIZATION; NANOSTRUCTURES; NICKEL COMPOUNDS; PARTICLES; SPIN; SPINELS; SUPERPARAMAGNETISM; SURFACES
- Descriptors DEC
- ANGULAR MOMENTUM; EQUATIONS; FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; PRECIPITATION; SEPARATION PROCESSES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2005 Springer Science+Business Media, Inc.