Solution-combustion synthesis of Bi1â€�?�ð�?�¥Ln𝑥O1.5 (Ln = Y and Laâ€�?�Yb) oxide ion conductors

Bulletin of materials science

A K Shukla²  C Shivakumara¹  Manjunath B Bellakki¹  A S Prakash¹  M S Hegde¹ 

[1] Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, IndiaSolid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$;Central Electrochemical Research Institute, Karaikudi 630 006, India$$Central Electrochemical Research Institute, Karaikudi 630 006, IndiaCentral Electrochemical Research Institute, Karaikudi 630 006, India$$

关键词: Combustion synthesis;    bismuth oxides;    oxideâ€�?�ion conductors.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Cubic fluorite related Bi_{1�?����?}Ln_�?O_1.5 (Ln = Y and La�?�Yb) phases are synthesized by solutioncombustion method using glycine as the fuel. The cubic fluorite phase is stabilized with 25 mole% of rare earth cations. The lattice parameter of cubic phase increases linearly with size of the lanthanide ion. The synthesized powders are nano-metric in size and exhibit excellent compactability and reach 98% densification even on short period of sintering. The oxides with relatively larger cations Nd, Sm, Eu, Pr and Gd with 25 mole% composition transform to rhombohedral structure while others retain cubic upon sintering. All the phases show high oxide�?�ion conductivity and the values obtained are in good agreement with the reported values.

【 授权许可】

Unknown