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Descripción
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| The binary CeIn2 alloy was found to be ferromagnetic below 22 K, one of the highest ferromagnetic ordering temperatures found on this kind of compounds. In addition, the analysis of the magnetic, thermal, and transport properties provided evidence for the firstorder character of this magnetic transition on this alloy [1]. More recently, muon spin rotation results have clarified the origin of this first-order transition in CeIn2, finding an intermediate magnetic phase between the paramagnetic and ferromagnetic states [2]. We present the evolution of the magnetic and thermal properties on the Ce(In1-xNix)2 (x = 0.025 and 0.05) series of alloys. The orthorhombic structure of the CeIn2 alloy changes to hexagonal AlB2-type for the Ni-diluted samples. The dc (ac) magnetic susceptibility and specific heat measurements show a change from first-order ferromagnetism in the CeIn2 alloy (x= 0) to second order ferromagnetism upon chemical substitution of Ni, with an abrupt decrease of the transition temperature from 22 K to 6.3 K (x = 0.025). The results indicate a preeminent role of volume and disorder effects on the magnetic behaviour along the series, and a close relationship between the crystallographic type of structure and the crystalline field effects on the first-order nature of the magnetic transition of the master CeIn2 binary alloy. | |
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Internacional
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Si |
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Nombre congreso
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Joint European Magnetic Symposia ( JEMS 2013) |
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Tipo de participación
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960 |
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Lugar del congreso
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Rhodes, Grecia |
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Revisores
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Si |
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ISBN o ISSN
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2100-014X |
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DOI
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http://dx.doi.org/10.1051/epjconf |
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Fecha inicio congreso
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25/08/2013 |
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Fecha fin congreso
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30/08/2013 |
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Desde la página
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640 |
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Hasta la página
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641 |
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Título de las actas
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Substitutional effects of In by Cu in CeIn2 |