Magnetic properties of Cu1+xMn2-xO4 and Ni1+xMn2-xO4 solid solutions

Peña O., Cailleaux X., Piriou Bruno, del Canto M., Abarca Valentina, Ríos E., Ortiz J., Gautier J.L., Lisboa-Filho P.N., Moure C.. 2007. Magnetic properties of Cu1+xMn2-xO4 and Ni1+xMn2-xO4 solid solutions. Journal of the European Ceramic Society, 27 (13-15) : pp. 3911-3914.

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Abstract : Magnetic properties of two spinel oxides solid solutions, Cu1+xMn2−xO4 and Ni1+xMn2−xO4, are reported. These series are characterized by two magnetic transitions: the upper one, of ferrimagnetic type, occurs at about 85 K (for copper-based) and at 105–110 K (for nickel-based spinels), independently of the x-content; the lower transition may be related to a Néel-type collinear ordering and takes place at 30 and 45 K, respectively. Application of moderate fields (H > 250 Oe) make both transitions to merge into one broad maximum in the magnetization, which takes place at lower temperature when applying larger fields. Magnetization cycles with temperature (ZFC/FC) or field (loops) allowed us to well characterize the ordered state. The effective moment follows the expected behavior when manganese ions are being substituted by ions of lower magnetic moment (Ni2+ and Cu2+). (Résumé d'auteur)

Classification Agris : 000 - Autres thèmes

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

  • Peña O., Université de Rennes I (FRA)
  • Cailleaux X., Université de Rennes I (FRA)
  • Piriou Bruno, Université de Rennes I (FRA)
  • del Canto M., Universidad de Santiago de Chile (CHL)
  • Abarca Valentina, Universidad de Santiago de Chile (CHL)
  • Ríos E., Universidad de Santiago de Chile (CHL)
  • Ortiz J., Universidad de Santiago de Chile (CHL)
  • Gautier J.L., Universidad de Santiago de Chile (CHL)
  • Lisboa-Filho P.N., UNESP (BRA)
  • Moure C., CSIC (ESP)

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