熔盐辅助制备钛酸锶钡纳米粉体及其介电性能

doi:10.11896/cldb.21010142

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Abstract Barium strontium titanate (Ba_1-xSr_xTiO₃,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 Ba_1-xSr_xTiO₃ were characterized by scanning electron microscope (SEM), X-ray diffractometer (XRD) and dielectric constant tester. The results reveal that the Ba_1-xSr_xTiO₃ nanopowders show a well-defined perovskite crystal structure and square or spherical morphology with average size of 70—100 nm. Moreover, Ba_0.9Sr_0.1TiO₃ and Ba_0.67Sr_0.33TiO₃ exhibit a tetragonal perovskite structure. The dielectric constant and dielectric loss of Ba_0.67Sr_0.33TiO₃ at 1 kHz reach 1 680 and 0.043 respectively, and the curie temperature is 27.3 ℃.

Key words： barium strontium titanate sol-precipitation method molten salt assisted dielectric property

Published: Online: 2022-06-09

CLC number:

TB34

Fund:Natural Science Foundation of Chongqing (cstc2018jcyjAX0565), the Returned Overseas Students' Entrepreneurship and Innovation Support Program of Chongqing (cx2018132), the Graduate Student Innovation Program of Chongqing (CYS20353) and Innovation Research Group at Institutions of Higher Education in Chongqing (CXQT19027)

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	TANG Zili
	XIA Junsong
	YIN Hang
	FU Guanghui
	AI Xitong
	TANG Hailong

Cite this article:

TANG Zili,XIA Junsong,YIN Hang, et al. Preparation of Barium Strontium Titanate Nanopowders Using Molten Salt Assisted and Its Dielectric Properties[J]. Materials Reports, 2022, 36(11): 21010142-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21010142 OR http://www.mater-rep.com/EN/Y2022/V36/I11/21010142

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