Author/Authors :
Wang، نويسنده , , L. and Shi، نويسنده , , Y.G. and Chen، نويسنده , , Z. X. Qin، نويسنده , , Y.B. and Tian، نويسنده , , H.F. and Ma، نويسنده , , C. and Yang، نويسنده , , H.X. and Belik، نويسنده , , A.A.، نويسنده ,
Abstract :
A new inverse spinel ScMn2O4 has been synthesized and characterized by measurements of structural and physical properties. The crystal structure of ScMn2O4, similar with the spinel Mn3O4, is made up of Mn2+ located at tetrahedral site and Mn3+/Sc3+ ions randomly located at the octahedral site. Experimental results of magnetic susceptibility and heat capacity demonstrate that ScMn2O4 undergoes a ferrimagnetic phase transition at the temperature of about 58 K. Extensive analyses on the data obtained from structural refinement, electronic structural calculation and EELS spectra measurement suggests that substitution of Sc for Mn in MnO6 octahedron could greatly suppress Jahn–Teller distortions in comparison with what observed in Mn3O4.
