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Pb2+-stabilized Ruddlesden–Popper (Sr1− xPbx)3Ti2O7 ceramics

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Abstract

Pb2+-doped (Sr1− xPbx)3Ti2O7 (SPT) ceramics were fabricated by a solid state reaction. The stability and lattice structure of Sr3Ti2O7 and Sr4Ti3O10 Ruddlesden–Popper (RP) phases were studied as a function of Pb2+ content and sintering atmosphere. X-ray diffraction indicates that SrO(SrTiO3)n RP phase formation is sensitive to the Sr:Ti ratio of the raw materials and is a complex circularly iterative process. When the PbO concentration is less than x = 0.03, pure Sr3Ti2O7 can be obtained. Sr4Ti3O10 was found to be the main phase in the SPT samples for x ≥ 0.075. Pb2+ stabilizes SrO(SrTiO3)n RP phases by substitution for Sr2+ which reduces the lattice stress of the RP phase. It was observed that SrO vaporization losses at high temperature can be compensated by the decomposition of the intermediate SrPbO3 phase at lower temperature.

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ACKNOWLEDGMENTS

The author would like to thank Nichole Wonderling from the Materials Characterization Lab in the Materials Research Institute at Penn State for Rietveld refinement discussions. Dr. F. Gao was supported by the Foundation of China Scholarship Council during his stay at The Pennsylvania State University.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Pennsylvania State University, State College, PA, 16802, USA

    Feng Gao, Yunfei Chang, Stephen F. Poterala, Elizabeth Kupp & Gary L. Messing

  2. State Key Laboratory of Solidification Processing, School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, China

    Feng Gao

  3. Condensed Matter Science and Technology Institute & School of Science, Harbin Institute of Technology, Harbin, Heilongjiang, 150080, China

    Yunfei Chang

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  1. Feng Gao
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Correspondence to Gary L. Messing.

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This author was an editor of this journal during the review and decision stage. For the JMR policy on review and publication of manuscripts authored by editors, please refer to http://www.mrs.org/jmr-editor-manuscripts/.

A previous error in this article has been corrected, see https://doi.org/10.1557/jmr.2016.202.

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Gao, F., Chang, Y., Poterala, S.F. et al. Pb2+-stabilized Ruddlesden–Popper (Sr1− xPbx)3Ti2O7 ceramics. Journal of Materials Research 31, 1456–1465 (2016). https://doi.org/10.1557/jmr.2016.164

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