+Advanced Search
Home > Archive>Volume 51, Issue 2, 2022 >374-377. DOI:10.12442/j.issn.1002-185X.20210623
PDF HTML XML Export Cite reminder
Composition-Driven Phase Transition and Electrical Perfor-mances of 0.74BiFe1- x Ga x O3-0.26BaTiO3 High Temperature Lead-Free Piezoceramics
Author:
Affiliation:

1.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;2.Guangzhou Kailitech Electronics Co., Ltd, Guangzhou 511356, China

Fund Project:

R&D Projects in Key Fields of Guangdong Province (2020B0109380001, 2019B040403004, 2019B040403006); Science and Technology Planning Project of Guangxi Zhuang Autonomous Region (AA18118034); National Natural Science Foundation of China (51577070, U1601208); Science and Technology Program of Guangzhou (201704030095)

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    Morphotropic phase boundary (MPB) is very important for enhancing piezoelectric properties of piezoceramics. In general, the MPB of BiFeO3-BaTiO3 system ceramics locates near the composition of 0.70BiFeO3-0.30BaTiO3. However, higher content of BaTiO3 will lead to lower Curie temperature of BiFeO3-BaTiO3 ceramics. Therefore, constructing an MPB for BiFeO3-BaTiO3 ceramics with lower BaTiO3 content is a reasonable strategy to obtain both the good piezoelectric property and high Curie temperature. 0.74BiFe1-xGaxO3-0.26BaTiO3 (x=0~0.05) lead-free piezoceramics were fabricated by traditional sintering methods, and effect of Ga content on the structures and electrical performances was investigated. Results show that a composition-driven phase transition from rhombohedral (R) to pseudocubic (pC) is identified as x increases from 0 to 0.05. The ceramics show symmetries of R at x≤0.01 and pC at 0.04≤x≤0.05, and the MPB with R-pC coexistence is detected in the composition range of 0.02≤x≤0.03. The Curie temperature of the piezoceramics decreases slightly owing to increased tolerance factor t with the increment of Ga content. In particular, the high Curie temperature ~515 °C and improved piezoelectric property of piezoelectric coefficient d33 of ~127 pC/N are obtained in the ceramics near MPB.

    Reference
    Related
    Cited by
Get Citation

[Yi Wenbin, Lu Zhenya, Liu Xingyue, Huang Du, Jia Zhi, Chen Zhiwu, Wang Xin, Zhu Huixiang. Composition-Driven Phase Transition and Electrical Perfor-mances of 0.74BiFe1- x Ga x O3-0.26BaTiO3 High Temperature Lead-Free Piezoceramics[J]. Rare Metal Materials and Engineering,2022,51(2):374~377.]
DOI：10.12442/j. issn.1002-185X.20210623

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:July 14,2021
  • Revised:September 28,2021
  • Adopted:October 27,2021
  • Online: March 03,2022
  • Published: February 28,2022

Total visitors：

Address：96 weiyanglu, xi'an,Shaanxi, P.R.China Postcode：710016 ServiceTel：0086-26-86231117

E-mail：rmme@c-nin.com

Copyright:Rare Metal Materials and Engineering ® 2025 All Rights Reserved Support:Beijing E-Tiller Technology Development Co., Ltd. ICP: