RT journal article
T1 Mössbauer study of multiphase iron oxide composites
A1 Ortega Ponce, Daniel
A1 Domínguez de la Vega, Manuel
A1 Barrera-Solano, M. Carmen
A1 Garitaonandía, J.S.
A2 Física de la Materia Condensada
K1 nanocomposites
K1 sol-gel
K1 magnetic nanoparticles
K1 mössbauer spectroscopy
AB A representative nanocomposite made of ferrimagnetic γ-Fe2O3 and antiferromagnetic α-Fe2O3 nanoparticles with estimated weight fractions of ∼90 and ∼10%, respectively, and grown in transparent silica xerogels has been characterized by Mössbauer spectroscopy with respect to the temperature. The changes of the hyperfine parameters of the different subspectral components have been compared with other macroscopic magnetic and structural measurements. This comparison has allowed us to identify two different superparamagnetic transitions, located at ∼50 K and at ∼250 K, as well as the phases involved in each transition.
SN 0022-3093
YR 2008
FD 2008-12-01
LK http://hdl.handle.net/10498/35250
UL http://hdl.handle.net/10498/35250
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 14-nov-2026