CRYSTAL-STRUCTURES OF THE HIGH-TEMPERATURE FORMS OF LN(2)SI(2)O(7) (LN=LA, CE, PR, ND, SM) REVISITED

Date

1994-11-01

Author

TAS, AC
AKINC, M

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The crystal structures of the high-temperature forms of light lanthanide pyrosilicates (disilicates), i.e., (La-to-Sm)(2)Si2O7, have been studied with powder X-ray diffraction on the quenched samples. These compounds have monoclinic structures with the space group P2(1)/n rather than orthorhombic structures. In the research of the last two decades, the smallness of the monoclinic angles (90.1 degrees-91 degrees) has possibly obscured the revelation of the true structural nature of these compounds. New XRD patterns are suggested for the studied lanthanide pyrosilicates exhibiting the monoclinic characteristics of the unit cells.

Subject Keywords

Materials Chemistry, Ceramics and Composites

URI

https://hdl.handle.net/11511/65444

Journal

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

DOI

https://doi.org/10.1111/j.1151-2916.1994.tb04532.x

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

A. TAS and M. AKINC, “CRYSTAL-STRUCTURES OF THE HIGH-TEMPERATURE FORMS OF LN(2)SI(2)O(7) (LN=LA, CE, PR, ND, SM) REVISITED,” JOURNAL OF THE AMERICAN CERAMIC SOCIETY, pp. 2968–2970, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65444.