Study of Nb-Zn-Mn Co-Doped Ba(Ti,Zr)O₃ Ceramics

Abstract:

The surface coating processing technique was utilized to modify hydrothermally synthesized Ba(Zr0.10Ti0.90)O3 (BZT) with Nb-organic compound and Zn-organic compound and Mn-organic in organmetallic precursor (Nb-EDTA and Zn-EDTA and Mn-EDTA), which were coated on the powders uniformly. The sintering temperature was decreased and dense ceramics were obtained with well-developed grain growth at 1300 0 C. With increasing the amount of (Nb2/3Zn1/3) from 0 to 1.3 mol%, the Curie temperature was monotonously lowered from 85 0C to 20 0C. The corresponding dielectric maximum decreased first and then increase. The shift rate of the phase transition point of (Nb2/3Zn1/3) codoped BZT was -48.5 0 C/mol%. With increasing of the amount of Mn, the Curie point temperature was lowered greatly, accompanied by a decrease in the corresponding dielectric maximum and an enhancement of the ferroelectric relaxor characteristic.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 791-796
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.791
• Online since: June 2012
• Authors: Yue Hui Wang, Jian Hong Shen
• Keywords: Barium Titanate Zirconium, Dielectric Property, Microstructure, Nb-Zn-Mn Co-Doped

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DOI: 10.31857/s0016-752564121247-1260-18364