The ceramic marerial of barium titanate (BT) was synthesized by a sol-gel method. The mircrostructure and morphology of the powders were characterized by IR, XRD and TEM. The dielectric constant and permeability of the mixture of BT powders and paraffin wax were measured. The microwave absorbing performance of BT powder and epoxide (EP) resin composite was studied in the frequency range of 8--18GHz. The results show that the BT powder exists in the form of tetragonal phase with the size in the range of 30--40nm. The BT/EP composite exhibits good microwave absorbing performance in the frequency range of 8--18GHz, when the content of BaTiO3 is 20vol%, the performance is the best. The microwave absorption mechanism of BaTiO3 powders is mainly due to the dielectric relaxation. The BT powder will be a good candidate for microwave absorbing materials.
WANG Gui-Qin
,
CHEN Xiao-Dong
,
DUAN Yu-Ping
,
LI Wei-Ping
,
LIU Shun-Hua
,
WEN Bin
. Synthesis of Barium Titanate and Its Electromagnetic Properties
[J]. Journal of Inorganic Materials, 2007
, 22(2)
: 293
-297
.
DOI: 10.3724/SP.J.1077.2007.00293
[1] lines M E, Glass A M. Principles and Applications of Ferroelectrics and Related Matertials. Oxford: Clarendon Press, 1997.
[2] Cardarelli F. Materials Handbook. Springer, 2001.
[3] 栾伟玲, 高 廉, 郭景坤(LUAN Wei-Ling, et al). 无机材料学报(Journal of Inorganic Materials), 1994, 13(4): 457-462.
[4] 赵建玲, 王晓惠, 李龙土. 稀有金属, 2005, 29(4): 526-529.
[5] Zhao J L, Wang X H, Chen R Z, et al. Solid State Communications, 2005, 134: 705-710.
[6] Junhan Yuh, Juan C Nino, Wolfgang M Sigmund. Materials Letters, 2005, 59: 3645-3647.
[7] 郭惠芬, 张兴堂, 刘 兵. 物理化学学报, 2004, 20(2): 164-168.
[8] 徐存英, 张鹏翔, 严 磊. 物理学报, 2005, 54(11): 5089-5092.
[9] Uchino K, Sadanaga E, Hirose T. Journal of the American Ceramic Society, 1989, 72: 1555.
[10] Zhang J, Yin Z, Zhang M S. Thin Solid Films, 2000, 375: 255-258.
[11] 黄集权, 杜丕一, 翁文剑(HUANG Ji-Quan, et al). 无机材料学报(Journal of Inorganic Materials), 2005, 20(5): 1106-1112.
[12] Kuo Dong-Hau, Wang Chih-Hung, TSAI Wen-Ping. Ceramics International, 2006, 32: 1-5.
[13] Jeon J H, Hahn Y D, KiM H D. Journal of European Ceramic Society, 2001, 21: 1653-1656.
[14] Fu C L, Yang C R, Chen H W, et al. Materials Science and Engineering B, 2005, 119: 185-186.
[15] 王英华. X光衍射技术基础. 原子能出版社, 1987.
[16] 万梅香. 物理学报, 1992, 41 (6): 917-923.
[17] 赵东林. 耐高温雷达波吸收剂的制备及其性能研究. 西北工业大学博士学位论文, 1999.
