Structure and optical and dielectric properties of barium titanate nanoparticles obtained by the mechanochemical method

被引：11
|
作者：
Gorelov, B. M. [1 ]
Kotenok, E. V. [1 ]
Makhno, S. N. [1 ]
Sydorchuk, V. V. [1 ,2 ]
Khalameida, S. V. [2 ]
Zazhigalov, V. A. [2 ]
机构：
[1] Natl Acad Sci Ukraine, Chuiko Inst Surface Chem, UA-03164 Kiev, Ukraine
[2] Natl Acad Sci Ukraine, Inst Sorpt & Problems Endoecol, UA-03164 Kiev, Ukraine
来源：
TECHNICAL PHYSICS | 2011年 / 56卷 / 01期
关键词：
PHASE-TRANSITION;
D O I：
10.1134/S1063784211010117
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The parameters of mechanochemical synthesis of barium titanate nanoparticles from barium titanyl oxalate and an oxide mixture are optimized. X-ray phase analysis, infrared and Raman scattering spectroscopy, differential scanning calorimetry, and dielectric spectroscopy are applied to demonstrate that the nanoparticles contain the cubic and tetragonal crystal lattice modifications. The impurity spectra for the particles obtained by the mechanochemical method from different initial substances are identical. The ferroelectric phase volume increases as hydroxyl groups are annealed from the crystal lattice and decreases upon annealing of metal atom vacancies.
引用
收藏
页码：83 / 91
页数：9
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