Synthesis and Magnetic Properties of Quasi-Unidimensional Oxide Sr_(6.3)Rh_(2.35)Mn_(2.35)O_(15)

摘要

Attempts of the synthesis in air of complex oxides Sr3RhMnO_x and Sr4Rh_(1.5)Mn_(1.5)O_x resulted in revealing formation of a new oxide phase Sr_(6.3)Rh_(2.35)Mn_(2.35)O9 related to quasi-unidimensional family A_(3n+3m)A'_nB_(3m+n)O_(9m+6n)at n=1 and m=1.Its structural characteristics and magnetic properties are studied.X-ray data of the obtained phase is indicated on the basis of trigonal cell(spatial group P321)with the parameters:a 9.6239(4)A;c1 4.1130(4)A,c2 2.4946(2)A.Manganese and rhodium exist in the compound as the cations Mn~(4+),Rh~(3+)and Rh~(4+),as follows from the data of measuring of magnetic susceptibility in the range 2-300 K.