Preparation of Barium Strontium Titanate Nanopowders Using Molten Salt Assisted and Its Dielectric Properties

被引：0

作者：

Tang Z. ^{[1
]}

Xia J. ^{[1
]}

Yin H. ^{[1
]}

Fu G. ^{[1
]}

Ai X. ^{[1
]}

Tang H. ^{[1
,2
]}

机构：

[1] College of Materials Science and Engineering, Chongqing University of Technology, Chongqing

[2] Chongqing Key Laboratory of Mold Technology, Chongqing

来源：

Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 11期

关键词：

Barium strontium titanate; Dielectric property; Molten salt assisted; Sol-precipitation method;

D O I：

10.11896/cldb.21010142

中图分类号：

学科分类号：

摘要：

Barium strontium titanate (Ba1-xSrxTiO3, x=0.1, 0.33, 0.5, 0.74, 0.8) nanopowders were synthesized by adjusting the molar ratio of barium to strontium via simple sol-precipitation method combined with heat treatment with molten salt. The morphology, structure and dielectric pro-perties of Ba1-xSrxTiO3 were characterized by scanning electron microscope (SEM), X-ray diffractometer (XRD) and dielectric constant tester. The results reveal that the Ba1-xSrxTiO3 nanopowders show a well-defined perovskite crystal structure and square or spherical morphology with average size of 70-100 nm. Moreover, Ba0.9Sr0.1TiO3 and Ba0.67Sr0.33TiO3 exhibit a tetragonal perovskite structure. The dielectric constant and dielectric loss of Ba0.67Sr0.33TiO3 at 1 kHz reach 1 680 and 0.043 respectively, and the curie temperature is 27.3 ℃. © 2022, Materials Review Magazine. All right reserved.

引用

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