Published March 2005 | Version v1
Journal article Metadata-only

Experimental evidence of surface effects in the magnetic dynamics behavior of ferrite nanoparticles

Creators

  • 1. Complex Fluids Group, Instituto de Fisica, Universidade de Brasilia, Caixa Postal 04455, 70919-970 Brasilia (DF) (Brazil)
  • 2. Complex Fluids Group, Instituto de Quimica, Universidade de Brasilia, Caixa Postal 04478, 70919-970 Brasilia (DF) (Brazil)
  • 3. Instituto de Fisica Universidade de Sao Paulo, Caixa postal 66318, 05315-970 Sao Paulo (SP) (Brazil)

Description

The magnetic dynamics behavior of copper and nickel ferrite nanoparticles used in the magnetic fluid elaboration and with mean sizes between 3.5 to 10.4 nm is investigated by measurements of magnetic hysteretic properties and zero field cooling (ZFC) susceptibility. The dependence of the irreversibility field, inversely proportional to the particle size, clearly indicates that the magnetic anisotropy of our particles finds its origin on the surface layer

Additional details

Identifiers

DOI
10.1016/j.jmmm.2004.11.035;
PII
S0304-8853(04)01259-4;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
289
Journal Page Range
p. 118-121
ISSN
0304-8853
CODEN
JMMMDC

Conference

Title
10. international conference on magnetic fluids
Acronym
ICMF10
Dates
2-6 Aug 2004
Place
Sao Paulo (Brazil)

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37024706
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANISOTROPY; COOLING; COPPER COMPOUNDS; FERRITES; LAYERS; LIQUIDS; MAGNETIC SUSCEPTIBILITY; NANOSTRUCTURES; NICKEL COMPOUNDS; PARTICLE SIZE; PARTICLES; SPINELS; SURFACES
Descriptors DEC
FERRIMAGNETIC MATERIALS; FLUIDS; IRON COMPOUNDS; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MATERIALS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SIZE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.