Type II twinning in devitrite,Na2Ca3Si6O16 |
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| Authors: | Kevin M. Knowles Callum N.F. Ramsey |
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| Affiliation: | 1. Department of Materials Science and Metallurgy , University of Cambridge , Pembroke Street, Cambridge CB2 3QZ , UK kmk10@cam.ac.uk;3. Department of Materials Science and Metallurgy , University of Cambridge , Pembroke Street, Cambridge CB2 3QZ , UK |
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| Abstract: | Nanometre-scale twins found in the triclinic crystalline phase devitrite, Na2Ca3Si6O16, are shown to exhibit the relatively rare form of twinning, Type II twinning, in which the crystal structure of one of the parts is related to the crystal structure of the other by a rotation of 180° about η 1?=?[1?0?0]. Although formally, the twin plane K 1 is irrational, it is in essence (0?1?0). |
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| Keywords: | crystallography devitrite transmission electron microscopy twinning |
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