Structures related to those of spinel and the ß-phase, and a possible mechanism for the transformation olivine ↔ spinel

B. G. Hyde, T. J. White, M. O'Keeffe, A. W. S. Johnson

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The structures of intermediate phases, such as the ß-phase, are shown to be readily derived from that of spinel (y) by the regular insertion of anti-phase boundaries (apbs) or mirror planes parallel to (010) of the body-centered tetragonal unit cell of the latter [[unk)]10) planes of the face-centred cubic cell]. The process leads eventually to a hypothetical structure, ω, from which y, ß, etc. can be derived by similar apbs. Unit layers parallel to (0[unk]2) in the ω structure are identical to those parallel to (001) in olivine (a, setting Pnma). A simple mechanism is proposed for the transformation α ω. Further transformation to ß etc. and y requires only slip, to generate apbs.

Original languageGerman
Pages (from-to)53-62
Number of pages10
JournalZeitschrift fur Kristallographie - New Crystal Structures
Volume160
Issue number1-2
DOIs
Publication statusPublished - 1982
Externally publishedYes

Cite this

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abstract = "The structures of intermediate phases, such as the {\ss}-phase, are shown to be readily derived from that of spinel (y) by the regular insertion of anti-phase boundaries (apbs) or mirror planes parallel to (010) of the body-centered tetragonal unit cell of the latter [[unk)]10) planes of the face-centred cubic cell]. The process leads eventually to a hypothetical structure, ω, from which y, {\ss}, etc. can be derived by similar apbs. Unit layers parallel to (0[unk]2) in the ω structure are identical to those parallel to (001) in olivine (a, setting Pnma). A simple mechanism is proposed for the transformation α ↔ ω. Further transformation to {\ss} etc. and y requires only slip, to generate apbs.",
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Structures related to those of spinel and the ß-phase, and a possible mechanism for the transformation olivine ↔ spinel. / Hyde, B. G.; White, T. J.; O'Keeffe, M.; Johnson, A. W. S.

In: Zeitschrift fur Kristallographie - New Crystal Structures, Vol. 160, No. 1-2, 1982, p. 53-62.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Structures related to those of spinel and the ß-phase, and a possible mechanism for the transformation olivine ↔ spinel

AU - Hyde, B. G.

AU - White, T. J.

AU - O'Keeffe, M.

AU - Johnson, A. W. S.

PY - 1982

Y1 - 1982

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AB - The structures of intermediate phases, such as the ß-phase, are shown to be readily derived from that of spinel (y) by the regular insertion of anti-phase boundaries (apbs) or mirror planes parallel to (010) of the body-centered tetragonal unit cell of the latter [[unk)]10) planes of the face-centred cubic cell]. The process leads eventually to a hypothetical structure, ω, from which y, ß, etc. can be derived by similar apbs. Unit layers parallel to (0[unk]2) in the ω structure are identical to those parallel to (001) in olivine (a, setting Pnma). A simple mechanism is proposed for the transformation α ↔ ω. Further transformation to ß etc. and y requires only slip, to generate apbs.

KW - Olivine

KW - Phase transformations

KW - Spinel

KW - Spinelloid

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U2 - 10.1524/zkri.1982.160.1-2.53

DO - 10.1524/zkri.1982.160.1-2.53

M3 - Article

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SP - 53

EP - 62

JO - Zeitschrift fuer Kristallographie - Crystalline Materials

JF - Zeitschrift fuer Kristallographie - Crystalline Materials

SN - 2196-7105

IS - 1-2

ER -