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Title: Improvement in synthesis of (K 0.5Na 0.5)NbO 3 powders by Ge 4+ acceptor doping

In this study, the effects of doping with GeO 2 on the synthesis temperature, phase structure and morphology of (K 0.5Na 0.5)NbO 3 (KNN) ceramic powders were studied using XRD and SEM. The results show that KNN powders with good crystallinity and compositional homogeneity can be obtained after calcination at up to 900°C for 2 h. Introducing 0.5 mol.% GeO 2 into the starting mixture improved the synthesis of the KNN powders and allowed the calcination temperature to be decreased to 800°C, which can be ascribed to the formation of the liquid phase during the synthesis.
Authors:
 [1] ;  [2] ;  [1]
  1. North China Electric Power Univ., Beijing (China)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Frontiers of Materials Science
Additional Journal Information:
Journal Volume: 10; Journal Issue: 4; Journal ID: ISSN 2095-025X
Publisher:
Springer
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; lead-free piezoelectrics; potassium sodium niobate; synthesis; acceptor doping
OSTI Identifier:
1356911

Zhao, Yajing, Chen, Yan, and Chen, Kepi. Improvement in synthesis of (K0.5Na0.5)NbO3 powders by Ge4+ acceptor doping. United States: N. p., Web. doi:10.1007/s11706-016-0362-8.
Zhao, Yajing, Chen, Yan, & Chen, Kepi. Improvement in synthesis of (K0.5Na0.5)NbO3 powders by Ge4+ acceptor doping. United States. doi:10.1007/s11706-016-0362-8.
Zhao, Yajing, Chen, Yan, and Chen, Kepi. 2016. "Improvement in synthesis of (K0.5Na0.5)NbO3 powders by Ge4+ acceptor doping". United States. doi:10.1007/s11706-016-0362-8. https://www.osti.gov/servlets/purl/1356911.
@article{osti_1356911,
title = {Improvement in synthesis of (K0.5Na0.5)NbO3 powders by Ge4+ acceptor doping},
author = {Zhao, Yajing and Chen, Yan and Chen, Kepi},
abstractNote = {In this study, the effects of doping with GeO2 on the synthesis temperature, phase structure and morphology of (K0.5Na0.5)NbO3 (KNN) ceramic powders were studied using XRD and SEM. The results show that KNN powders with good crystallinity and compositional homogeneity can be obtained after calcination at up to 900°C for 2 h. Introducing 0.5 mol.% GeO2 into the starting mixture improved the synthesis of the KNN powders and allowed the calcination temperature to be decreased to 800°C, which can be ascribed to the formation of the liquid phase during the synthesis.},
doi = {10.1007/s11706-016-0362-8},
journal = {Frontiers of Materials Science},
number = 4,
volume = 10,
place = {United States},
year = {2016},
month = {11}
}