A simple solvothermal synthesis of MFe{sub 2}O{sub 4} (M=Mn, Co and Ni) nanoparticles

Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.07.028· OSTI ID:21372333

Yanez-Vilar, S; Sanchez-Andujar, M; Gomez-Aguirre, C ^[1]; Mira, J ^[2]; Senaris-Rodriguez, M A ^[1]; Castro-Garcia, S ^[1]

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1. Departamento de Quimica Fundamental, Facultade de Ciencias, Universidade da Coruna, A Zapateira s/n, 15071 A Coruna (Spain)
2. Departamento de Fisica Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela (Spain)

Nanoparticles of MFe{sub 2}O{sub 4} (M=Mn, Co and Ni), with diameters ranging from 5 to 10 nm, have been obtained through a solvothermal method. In this synthesis, an alcohol (benzyl alcohol or hexanol) is used as both a solvent and a ligand; it is not necessary, therefore, to add a surfactant, simplifying the preparation of the dispersed particles. We have studied the influence of the synthetic conditions (temperature, time of synthesis and nature of solvent) on the quality of the obtained ferrites and on their particle size. In this last aspect, we have to highlight that the solvent plays an important role on the particle size, obtaining the smallest diameters when hexanol was used as a solvent. In addition, the magnetic properties of the obtained compounds have been studied at room temperature (RT). These compounds show a superparamagnetic behaviour, as was expected for single domain nanoparticles, and good magnetization values. The maxima magnetization values of the MFe{sub 2}O{sub 4} samples are quite high for such small nanoparticles; this is closely related to the high crystallinity of the particles obtained by the solvothermal method. - Graphical abstract: An adaptation of the solvothermal method allow us to obtain stable suspensions of monodispersed particles of MFe{sub 2}O{sub 4} (M=Mn, Co and Ni), with diameters ranging from 5 to 10 nm, and with good crystallinity.

• OSTI ID: 21372333
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 10; Other Information: DOI: 10.1016/j.jssc.2009.07.028; PII: S0022-4596(09)00349-1; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
BENZYL ALCOHOL
COBALT COMPOUNDS
FERRITES
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANESE COMPOUNDS
NANOSTRUCTURES
NICKEL COMPOUNDS
SUPERPARAMAGNETISM
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
ALCOHOLS
AROMATICS
FERRIMAGNETIC MATERIALS
HYDROXY COMPOUNDS
IRON COMPOUNDS
MAGNETIC MATERIALS
MAGNETISM
MATERIALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS