Synthesis and solid state studies on Mb2Sb2O7 and (Mn1xCdx)2Sb2O7 pyrochlores
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Pyrochlore oxides of the type Mn2Sb2O7 and (Mn1-xCdx)2Sb2O7 have been synthesized by high-temperature solid state reactions and characterized by X-ray diffraction and chemical analysis. X-Ray diffraction studies showed that the compound Mn2Sb2O7 has a rhombohedrally distorted pyrochlore structure. In the solid solutions (Mn1-xCdx)2Sb2O7, the phases with x 0.6 are cubic. Magnetic and 121Sb Mssbauer studies indicate that all the Mn and Sb are present in the +2 and +5 state occupying A and B sites, respectively, in the pyrochlore structure. Electrical measurements indicate that the compounds are insulators or semiconductors exhibiting p-type behavior. The stoichiometry and probable cause of the rhombohedral distortion in Mn2Sb2O7 and solid solutions are discussed. 1984.
Journal of Solid State Chemistry
author list (cited authors)
Subramanian, M. A., Clearfield, A., Umarji, A. M., Shenoy, G. K., & Rao, G.
complete list of authors
Subramanian, MA||Clearfield, A||Umarji, AM||Shenoy, GK||Rao, GV Subba