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	<div id="articleTitle"><h3>Preparación y estudio de materiales nanoparticulados de óxido de hierro</h3></div>
	<div id="authorString"><em>Iván Aldama, Pablo Arévalo, Ágata Cubero, Marta Pérez, Marta Castelaín, Jose Antonio Molina, Josefa Isasi</em></div>
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			<div id="articleAbstract">
		<h4>Resumen</h4>
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		<div><p>Se ha utilizado un método de coprecipitación de cloruros para preparar nanopartículas de magnetita (Fe<sub>3</sub>O<sub>4</sub>), de un  tamaño inferior a 25 nm. Estas partículas han sido caracterizadas por difracción de rayos X de polvo (XRD) y por microscopía electrónica de barrido (SEM). Con el objeto de estudiar el comportamiento superparamagnético de estas nanopartículas, se han realizado medidas de la variación de la susceptibilidad magnética y magnetización con la temperatura, utilizando campos diferentes.</p></div>
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		<h4>Palabras clave</h4>
		<br />
		<div>Magnetita; Espinela; Nanopartículas; Superparamagnetismo;</div>
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