SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE

Manganese oxides of spinel structure, based on nickel (NiMn2O4) or lithium (LiMn2O4), were studied by magnetic measurements. Manganese was partially substituted by either chromium or iron, showing substantial variations of the magnetic properties with respect to the non-substituted compounds. Chromi...

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Autores principales:	BARAHONA,Patricia, BODENEZ,Vincent, GUIZOUARN,Thierry, PEÑA,Octavio, ORTIZ,Juan, RIOS,Edmundo, PASTENE,Rubén, GAUTIER,Juan Luis
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2005
Materias:	Manganese oxides Spinels Magnetic interactions Ferrimagnetism
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000200011
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spelling	oai:scielo:S0717-970720050002000112005-07-19SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FEBARAHONA,PatriciaBODENEZ,VincentGUIZOUARN,ThierryPEÑA,OctavioORTIZ,JuanRIOS,EdmundoPASTENE,RubénGAUTIER,Juan Luis Manganese oxides Spinels Magnetic interactions Ferrimagnetism Manganese oxides of spinel structure, based on nickel (NiMn2O4) or lithium (LiMn2O4), were studied by magnetic measurements. Manganese was partially substituted by either chromium or iron, showing substantial variations of the magnetic properties with respect to the non-substituted compounds. Chromium enhances the antiferromagnetic interactions in both NiMn2-xCr xO4 and LiMn2-xCr xO4, while iron enhances the ferromagnetic ones, increasing Tc well above room temperature in NiMn2xFe xO4 and LiMn2-xFe xO4 (0 £ x £ 1). Titration analyses allowed us to estimate the Mn n+/Mn n+1 ratios in most cases, confirming the importance of the Mn3+-O-Mn4+ double-exchange ferromagnetism and the controlled-valence conduction mechanism in these materialsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.50 n.2 20052005-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000200011en10.4067/S0717-97072005000200011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Manganese oxides Spinels Magnetic interactions Ferrimagnetism
spellingShingle	Manganese oxides Spinels Magnetic interactions Ferrimagnetism BARAHONA,Patricia BODENEZ,Vincent GUIZOUARN,Thierry PEÑA,Octavio ORTIZ,Juan RIOS,Edmundo PASTENE,Rubén GAUTIER,Juan Luis SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE
description	Manganese oxides of spinel structure, based on nickel (NiMn2O4) or lithium (LiMn2O4), were studied by magnetic measurements. Manganese was partially substituted by either chromium or iron, showing substantial variations of the magnetic properties with respect to the non-substituted compounds. Chromium enhances the antiferromagnetic interactions in both NiMn2-xCr xO4 and LiMn2-xCr xO4, while iron enhances the ferromagnetic ones, increasing Tc well above room temperature in NiMn2xFe xO4 and LiMn2-xFe xO4 (0 £ x £ 1). Titration analyses allowed us to estimate the Mn n+/Mn n+1 ratios in most cases, confirming the importance of the Mn3+-O-Mn4+ double-exchange ferromagnetism and the controlled-valence conduction mechanism in these materials
author	BARAHONA,Patricia BODENEZ,Vincent GUIZOUARN,Thierry PEÑA,Octavio ORTIZ,Juan RIOS,Edmundo PASTENE,Rubén GAUTIER,Juan Luis
author_facet	BARAHONA,Patricia BODENEZ,Vincent GUIZOUARN,Thierry PEÑA,Octavio ORTIZ,Juan RIOS,Edmundo PASTENE,Rubén GAUTIER,Juan Luis
author_sort	BARAHONA,Patricia
title	SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE
title_short	SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE
title_full	SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE
title_fullStr	SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE
title_full_unstemmed	SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE
title_sort	substitution effects on the magnetic properties of ni(me,mn)2o4 and li(me,mn)2o4: comparison between me = cr and fe
publisher	Sociedad Chilena de Química
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000200011
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SUBSTITUTION EFFECTS ON THE MAGNETIC PROPERTIES OF NI(ME,MN)2O4 AND LI(ME,MN)2O4: COMPARISON BETWEEN ME = CR AND FE

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