A Study of Exchange Interactions in R(FeCo)11TiCy (R=Y or Pr) Compounds
The exchange interactions in PrFe11-xCoxTiCy (x=0÷2, y≤1), are analyzed on the basis of the structural and magnetic properties of polycrystalline samples. The magnetic properties of polycrystalline isomorphous compounds YFe11-xCoxTiCy have been used in order to determine the T (T=Fe+Co) sub-lattice contributions, such as the T sub-lattice mean magnetic moment and the T-T exchange interaction strength. The exchange coupling parameters JTT, JRT and the recurrent molecular field coefficients nTT, nRT have been calculated in the molecular field approximation (MCA). The effects of Co content and carbonation on the R-T (T=Fe+Co) and on the T-T exchange interactions are analyzed.
J.-L. Bobet, B. Chevalier and D. Fruchart
C. B. Cizmas and L. Bessais, "A Study of Exchange Interactions in R(FeCo)11TiCy (R=Y or Pr) Compounds", Solid State Phenomena, Vol. 170, pp. 223-226, 2011