Author/Authors :
I.V. Piir، نويسنده , , I.V. and Sekushin، نويسنده , , N.A. and Grass، نويسنده , , V.E. and Ryabkov، نويسنده , , Y.I. and Chezhina، نويسنده , , N.V. and Nekipelov، نويسنده , , S.V. and Sivkov، نويسنده , , V.N. and Vyalikh، نويسنده , , D.V.، نويسنده ,
Abstract :
Manganese-containing bismuth titanate solid solutions with a pyrochlore-type crystal structure were obtained by the ceramic technique over a wide range of compositions. The NEXAFS (near-edge X-ray absorption fine structure) spectra of Mn2p-absorption in bismuth manganese titanate pyrochlores point to manganese being mainly in the oxidation state + 2 in these solid solutions. The Mn-rich bismuth titanate pyrochlores showed a superposition of antiferro- (long-order) and ferromagnetic (short-order) behavior. The results of impedance investigations show the electron–ionic conductivity in these samples.
Keywords :
Bi–Mn–Ti–O , Magnetic behavior , NEXAFS , pyrochlore , Electrical properties , Bismuth manganese titanate
