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Diffraction de neutrons et études sur l'effet magnétocalorique des séries de MnFe(1-x)Co(x)P dans des solutions solides.

Neutron diffraction and magnetocaloric effect studies of MnFe(1-x)Co(x)P series of solid solutions.

Auteurs : CHAJEC W., FRUCHART D., ZACH R., et al.

Résumé

MnFe1-xCoxP intermetallic series of solid solutions have been studied by means of powder neutron diffraction in 10.320 K temperature range. Rietveld analysis pointed out that Co2P-type orthorhombic crystal structure presents for all series. Helicoidal incommensurate antiferromagnetic structure with propagation vector q = [0, 0, q] were evidenced for all compounds at low temperature range. The q value decreases with cobalt content and the second order polynomial it was evidenced, that is found well correlated with this dependence. In addition, magnetic interactions in relations with electronic band structure calculations of MnFe(1-x)Co(x)P were presented and discussed reference to previous published data. Finally, magnetocaloric properties for selected compounds of the MnFe(1-x)Co(x)P and MnFe(0.45)Co(0.45)P(0.9)Ge(0.1) series of compounds are presented.

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Pages : 2010-4

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Détails

  • Titre original : Neutron diffraction and magnetocaloric effect studies of MnFe(1-x)Co(x)P series of solid solutions.
  • Identifiant de la fiche : 2011-0184
  • Langues : Anglais
  • Source : 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
  • Date d'édition : 23/08/2010

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