Magnetic behavior of iron (III) oxyhydroxy nanoparticles in organic-inorganic hybrid matrices
authors Silva, NJO; Amaral, VS; Carlos, LD; Fu, LS; Nunes, SC; Bermudez, VD
nationality International
journal JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
author keywords antiferromagnetism; nanoparticles; polymers; sol-gel method
keywords NANOHYBRIDS; UREA
abstract Magnetic properties of iron(III) oxyhydroxy nanoparticles stabilized within a sol-gel derived organic-inorganic matrix are investigated. Depending on the size of the polymer chain and on the sol-gel route, ferrihydrite or Fe(III) oxyhydroxynitrate can be formed. Comparing different sets of samples we can address the observed magnetic features to the different oxyhydroxy phases. The ferrihydrite particles exhibit thermal and field irreversibility below 30 K, with coercive and exchange fields characteristic of antiferromagnetic nanoparticles uncompensated/canted spins. The existence of anti ferromagnetic interactions in the Fe(III) oxyhydroxynitrate phase can be inferred. (c) 2004 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0304-8853
year published 2005
volume 290
beginning page 962
ending page 965
digital object identifier (doi) 10.1016/j.jmmm.2004.11.301
web of science category Materials Science, Multidisciplinary; Physics, Condensed Matter
subject category Materials Science; Physics
unique article identifier WOS:000228837900045
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 2.717
5 year journal impact factor 2.723
category normalized journal impact factor percentile 54.977
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg