自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 11    No. 2    June 2004

[PDF Download]    [Flash Online]

    

Effects of La3+doping on MnZn ferrite nanoscale
particles synthesized by hydrothermal method
GU Ying-ying(古映莹)1,TAN Xiao-ping (谭小平)1, 2,
LIANG Shu-quan(梁叔全)2,SANG Shang-bin(桑商斌) 1

1.College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2.College of Materials Science and Engineering, Central South University, Changsha 410083, China

Abstract:MnZn ferrite nanoscale particles were synthesized by hydrothermal method. The effects of amount of addition La3+  on the products were discussed. The product was characterized by X-ray diffraction (XRD) and transmission elec-tron microscope (TEM). The results show that the sample with 0.2% La3+ (mass fraction) or without  La3+  has only spinel phase, but the sample with mass fraction of La3+  exceeding 0.4% posses second phase besides the spinel one; and the nano-MnZn ferrites change from cube to hexagon when the mass fractions of La3+  is up to 1.2%. TEM image of the sample with 1.2% La3+  indicates that the homogeneous hexagonal crystal is obtained and the particles are larger than those of undoped; the addition of La3+  has great influence on the crystallization of hydrothermal process and can change the shape of particles and improve their growth. The saturation magnetization of the sample with 1.2% La3+ (2.64 A·m2·kg-1) is lower than that of undoped (17.54 A·m2·kg-1) and it behaves superparamagnetically.

 

Key words: hydrothermal method; MnZn ferrite; nanoscale particle; doping

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号