Combustion synthesis and characterization of Ba2NdSbO6 nanocrystals

Bulletin of materials science

S Ramakrishna²  P R S Wariar¹  R Jose²  J Koshy¹  V T Kavitha¹ 

[1] Department of Physics, University College, Thiruvananthapuram 695 034, India$$Department of Physics, University College, Thiruvananthapuram 695 034, IndiaDepartment of Physics, University College, Thiruvananthapuram 695 034, India$$;National University of Singapore, Singapore 117576$$National University of Singapore, Singapore 117576National University of Singapore, Singapore 117576$$

关键词: Ceramics;    infrared spectroscopy;    surface morphology;    transmission electron microscopy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Nanocrystalline Ba₂NdSbO₆, a complex cubic perovskite metal oxide, powders were synthesized by a self-sustained combustion method employing citric acid. The product was characterized by X-ray diffraction, differential thermal analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy, transmission electron microscopy and scanning electron microscopy. The as-prepared powders were single phase Ba₂NdSbO₆ and a mixture of polycrystalline spheroidal particles and single crystalline nanorods. The Ba₂NdSbO₆ sample sintered at 1500°C for 4 h has high density (∼ 95% of theoretical density). Sintered nanocrystalline Ba₂NdSbO₆ had a dielectric constant of ∼ 21; and dielectric loss = 8 Ã�? 10^-3 at 5 MHz.

【 授权许可】

Unknown