Structure, phase transitions and optical properties of pure and rare earth doped BaCeO3, SrCeO3 prepared by inductive melting

✍ Scribed by B.-T Melekh; V.M Egorov; Yu.M Baikov; N.F Kartenko; Yu.N Filin; M.E Kompan; I.I Novak; G.B Venus; V.B Kulik

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 289 KB
• Volume: 97
• Category: Article
• ISSN: 0167-2738
• DOI: 10.1016/s0167-2738(97)00093-3

✦ Synopsis

Fused crystalline BaCe Ln O (Ln 5 Y,Gd,Nd, 0 , x , 0.2), and SrCe Dy O (x 5 0; 0.05) have been prepared 12x x 32 d 12x x 3 2 d by inductive melting. XRPD measurements have showed that annealed BaCeO was orthorhombic. DSC spectra of BaCeO 3 3 have showed two peaks at 533 K and 630 K. Phase transitions in the range 270-900 K were not revealed in BaCe Y O , BaCe Nd O and SrCeO . For comparison ceramic BaCeO :Gd was considered. Raman spectra of 0.8 0.2 32d 0.9 0.1 32d 3 3

BaCeO have confirmed the X-ray data on the orthorhombic symmetry for annealed samples. Eu-luminescence study of 3 BaCeO :(Y 1 Eu) has confirmed the octahedral oxygen enviroment of trivalent dopant ions.