Title of article :
Synthesis and characterization of the reduced niobates CaLnNb2O7, Ln = La-Pr, Sm, Gd-Lu, with the pyrochlore-type structure
Author/Authors :
Istomin، نويسنده , , S.Ya and Dʹyachenko، نويسنده , , O.G. and Antipov، نويسنده , , E.V. and Svensson، نويسنده , , G and Lundqvist، نويسنده , , B، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Abstract :
New reduced niobates, CaLnNb2O7, Ln = La-Pr, Sm, Gd-Lu, with the pyrochlore-type structure were synthesized in sealed Nb ampoules at 1350–1500°C for 6–10 h. The prepared compounds were characterized by powder X-ray diffraction, energy dispersive X-ray analysis, and thermogravimetric analysis. The magnetic measurements showed that all of the samples except the La, Sm, and Lu compounds exhibited Curie-Weiss behavior. The compounds were found to be electrically insulating.
Keywords :
D. Electrical properties , D. Magnetic properties , C. X-ray diffraction , A. Inorganic compounds , B. Chemical synthesis
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
