Published July 2009 | Version v1
Journal article Metadata-only

Temperature dependence of magnetic properties in Fe/Fe-O nanoparticles dispersed in water

Creators

  • 1. INRIM, Electromagnetism Division, Strada delle Cacce 91, I-10135 Torino (Italy)
  • 2. DITAG (Dipartimento del Territorio, Ambiente e Geotecnologie), Politecnico di Torino, corso Duca degli Abruzzi 24, I-10129 Torino (Italy)

Description

Commercial water dispersions of Fe/Fe-O nanoparticles (∼50-80 nm diameter) were prepared bare and treated with a biodegradable polymer to stabilize the suspension. Hysteresis loops and FC-ZFC curves of samples in liquid and dried form were measured by means of a vibrating sample magnetometer from 77 to 300 K. A marked dependence on the conditioning field is observed in all samples that display the Verwey transition at about 120 K. The role of magnetic interactions on dried samples was also investigated by means of magnetoresistance measurements as a function of temperature.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jmmm.2009.01.039

Additional details

Identifiers

DOI
10.1016/j.jmmm.2009.01.039;
PII
S0304-8853(09)00046-8;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
321
Journal Issue
14
Journal Page Range
p. 2276-2278
ISSN
0304-8853
CODEN
JMMMDC

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41009822
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
HYSTERESIS; INTERACTIONS; IRON; IRON OXIDES; MAGNETIC PROPERTIES; MAGNETORESISTANCE; NANOSTRUCTURES; PARTICLES; POLYMERS; SUSPENSIONS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; VIBRATING SAMPLE MAGNETOMETERS; WATER
Descriptors DEC
CHALCOGENIDES; DISPERSIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; HYDROGEN COMPOUNDS; IRON COMPOUNDS; MAGNETOMETERS; MEASURING INSTRUMENTS; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.