首页 | 本学科首页   官方微博 | 高级检索  
     


On preparation of fine particles of MnFe2O4 and their magnetic properties
Authors:S N Dolia  Anjali Krishnamurthy  Bipin K Srivastava  Vipasha Ghose
Affiliation:(1) Department of Physics, University of Rajasthan, 302 004 Jaipur, India
Abstract:Influence of the heat treatment, following a wet chemical process, has been examined on the sizes of the obtained particles of MnFe2O4. X-ray diffraction, magnetization and Mössbauer measurements have been used. The average sizes of the obtained particles are in the range of ~ 100 Å–300Å with the upper size limit being ~ 450 Å and more. The average size as well as size distribution is strongly influenced by the nature of the heat treatment followed for preparation of the sample. Prolonged hydrothermal heating resulted in larger average size than did dry heating at 400°C of the precipitate obtained from the initial wet process. Further dry heating following hydrothermal treatment did not lead to any major growth. Chemical nature of the starting materials also affects the sizes.
Keywords:Fine particle systems  ferrimagnetics
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号