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Phase Composition and Microstructure of Ca1–3xLn2xTiO3 (Ln=La, Nd, Sm) Ceramics

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Abstract:

Ca1–3xLn2xTiO3 (Ln=La, Nd, Sm; x=0.13, 0.20) ceramics were investigated systematically to dicuss the influences of sintering temperature, compositions, Ln3+ ions on its sintering property, crystal structure and microstructure. The results show that the dense ceramics were obtained in the sintering temperature range of 1300~1350 °C and the relative density reached over 97%. Sintering temperature was 50~150 °C lower than previous reports. Single orthogonal perovskite structure phase was formed except that a little secondary phase Sm2Ti2O7 was detected by XRD analysis when x=0.20 and Ln=Sm. The growth pattern of Ca1–3xLn2xTiO3 grains was terracing growth.

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Periodical:

Advanced Materials Research (Volumes 430-432)

Pages:

36-40

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.430-432.36

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Online since:

January 2012

Authors:

Bing Liang Liang, Yun Long Ai, Xing Hua Zheng, De Ping Tang, Fei He

Keywords:

Average Electronegativity Difference, Ca1–3xLn2xTiO3, Microstructure, Tolerance Factor

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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