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Phase Formation, Crystal Orientations and Epitaxy in Bi2O3/TiO2/SiO2 (/Nd2O3) Glass-Ceramics


Four glasses in the Bi2O3/TiO2/SiO2 and Bi2O3/TiO2/SiO2/Nd2O3 systems are melted and poured into graphite moulds where they show spontaneous crystallization during cooling. The crystal phases α-Bi2Ti4O11, Bi4-xNdxTi3O12, Bi2Si1-yTiyO5, TiO2 and probably Bi2Ti2O7 are shown to crystallize using X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDXS) and electron backscatter diffraction (EBSD). A previously unknown miscibility of Bi2SiO5 and Bi2TiO5 is indicated. Oriented layers of monoclinic α-Bi2Ti4O11, Bi4-xNdxTi3O12 and Bi2Si1-yTiyO5 are observed. A perfectly epitaxial relationship between Bi4-xNdxTi3O12 and Bi2Si1-yTiyO5 is proven by EBSD. Crystals with the compositions Bi2Si1-yTiyO5 with y=0.33, 0.5 and 0.66 are detected.

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Publication details

The article was received on 21 Mar 2017, accepted on 18 Apr 2017 and first published on 19 Apr 2017

Article type: Paper
DOI: 10.1039/C7CE00542C
Citation: CrystEngComm, 2017, Accepted Manuscript
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    Phase Formation, Crystal Orientations and Epitaxy in Bi2O3/TiO2/SiO2 (/Nd2O3) Glass-Ceramics

    W. Wisniewski, S. Slavov, C. Rüssel and Y. Dimitriev, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE00542C

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