Sintering of nanocrystalline manganites

S.Yu. Prylypko,
 
G.Ya. Akimov,
 
V.V. Burhovetsky,
  
A.V. Zhebel
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #17
http://www.materials.kiev.ua/article/571

Abstract

The effect of temperature and time of sintering on microstructure, density and resistivity of manganite-lanthanum ceramics of La0.7Mn1.3O3±? and (La0.65Sr0.35)0.8Mn1.2O3±? composition was studied. Sintering of nanocrystalline manganite compacts of average crystallite size from 5 to 200 nm has shown that the crystalliту size of 30 nm is optimal for high-density ceramics. It was found that the duration of treatment is more conducive to the sintering process than grain growth.


CERAMICS, DENSITY, LANTHANUM MANGANITE, SINTERING, STRUCTURE