A facile co-precipitation synthesis of hexagonal (Zn, Mg)TiO3

A facile co-precipitation synthesis of hexagonal (Zn, Mg)TiO3
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六方晶系 (Zn, Mg)TiO3 的简便共沉淀合成

DOI:
10.1016/j.powtec.2013.02.041
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发表时间:
2013-05
期刊:
Powder Technol
影响因子:
--
通讯作者:
K. He, R.Y. Hong*, W.G. Feng, D. Badami
K. He, R.Y. Hong*, W.G. Feng, D. Badami
中科院分区:
其他
文献类型:
--
作者:
K. He, R.Y. Hong*, W.G. Feng, D. Badami

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以TiOSO 4为钛源,采用简单的共沉淀法合成了介电材料钛酸镁锌(ZMTO)。采用热重分析(TGA)和傅里叶变换红外(FT-IR)光谱对所制备的沉淀物在热处理过程中的分解和相演变进行了表征。X射线衍射分析表明,不同的pH值水平有显着的影响,由于镁掺杂含量的制备沉淀物的结晶。SEM照片和EDS数据表明,Mg掺杂量为2.29at.%的六方晶系(Zn,Mg)TiO 3粉体可以在pH 9和800°C的煅烧温度下获得。在1000°C烧结后,六方相(Zn,Mg)TiO 3在108 ~ 109 Hz的测量频率下,介电常数为26-24沿着,介电损耗为9.82×10−4 ~ 6.35×10− 4。
Dielectric zinc magnesium titanate (ZMTO) was synthesized by a facile co-precipitation method using TiOSO4as the Ti source. The decomposition and phase evolvement of the as-prepared precipitates during heat treatment were characterized by thermogravimetry analysis (TGA) and Fourier-transforming infrared (FT-IR) spectroscopy. X-ray diffractometry shows that different pH levels have a significant influence on the crystallization of the as-prepared precipitate due to the magnesium doping content. SEM images and EDS data show that fine hexagonal (Zn, Mg)TiO3powders with a Mg doping content of 2.29at.% could be obtained at a pH of 9 and a calcination temperature of 800°C. After sintering at 1000°C, hexagonal (Zn, Mg)TiO3demonstrated a dielectric constant of 26–24 along with a low dielectric loss of 9.82×10−4–6.35×10−4at measurement frequencies between 108and 109Hz.
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