Electron microscopy of boundary structure in calcium zirconate

V. P. Dravid; M. R. Notis; C. E. Lyman

doi:10.1007/BF01132061

Electron microscopy of boundary structure in calcium zirconate

V. P. Dravid^*, M. R. Notis, C. E. Lyman

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Various types of boundary in orthorhombic calcium zirconate (CaZrO₃) were examined using conventional transmission electron microscopy (CTEM), high-resolution electron microscopy (HREM), selected-area diffraction (SAED) and convergent-beam electron diffraction (CBED). Two types of interface, namely δ-boundaries and coherent twin boundaries were identified and analysed. The δ-boundaries were studied using CTEM, SAED and CBED; the twin boundaries were investigated using the additional technique of HREM. Pseudosymmetric twinning was observed in CaZrO₃ where the two domains were related to each other by either a 180° or a 90° rotation about an axis perpendicular to (101). A different type of twin boundary, where the adjacent domains were related by a 180° rotation about the normal to (100), was also noted. The observations are compared with previous studies on other ABO₃-type compounds isostructural with CaZrO₃.

Original language	English (US)
Pages (from-to)	4546-4549
Number of pages	4
Journal	Journal of Materials Science
Volume	22
Issue number	12
DOIs	https://doi.org/10.1007/BF01132061
State	Published - Dec 1987

ASJC Scopus subject areas

Mechanics of Materials
Ceramics and Composites
Mechanical Engineering
Polymers and Plastics
General Materials Science
Materials Science (miscellaneous)

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10.1007/BF01132061

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title = "Electron microscopy of boundary structure in calcium zirconate",

abstract = "Various types of boundary in orthorhombic calcium zirconate (CaZrO3) were examined using conventional transmission electron microscopy (CTEM), high-resolution electron microscopy (HREM), selected-area diffraction (SAED) and convergent-beam electron diffraction (CBED). Two types of interface, namely δ-boundaries and coherent twin boundaries were identified and analysed. The δ-boundaries were studied using CTEM, SAED and CBED; the twin boundaries were investigated using the additional technique of HREM. Pseudosymmetric twinning was observed in CaZrO3 where the two domains were related to each other by either a 180° or a 90° rotation about an axis perpendicular to (101). A different type of twin boundary, where the adjacent domains were related by a 180° rotation about the normal to (100), was also noted. The observations are compared with previous studies on other ABO3-type compounds isostructural with CaZrO3.",

author = "Dravid, {V. P.} and Notis, {M. R.} and Lyman, {C. E.}",

year = "1987",

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doi = "10.1007/BF01132061",

language = "English (US)",

volume = "22",

pages = "4546--4549",

journal = "Journal of Materials Science",

issn = "0022-2461",

publisher = "Springer Netherlands",

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TY - JOUR

T1 - Electron microscopy of boundary structure in calcium zirconate

AU - Dravid, V. P.

AU - Notis, M. R.

AU - Lyman, C. E.

PY - 1987/12

Y1 - 1987/12

N2 - Various types of boundary in orthorhombic calcium zirconate (CaZrO3) were examined using conventional transmission electron microscopy (CTEM), high-resolution electron microscopy (HREM), selected-area diffraction (SAED) and convergent-beam electron diffraction (CBED). Two types of interface, namely δ-boundaries and coherent twin boundaries were identified and analysed. The δ-boundaries were studied using CTEM, SAED and CBED; the twin boundaries were investigated using the additional technique of HREM. Pseudosymmetric twinning was observed in CaZrO3 where the two domains were related to each other by either a 180° or a 90° rotation about an axis perpendicular to (101). A different type of twin boundary, where the adjacent domains were related by a 180° rotation about the normal to (100), was also noted. The observations are compared with previous studies on other ABO3-type compounds isostructural with CaZrO3.

AB - Various types of boundary in orthorhombic calcium zirconate (CaZrO3) were examined using conventional transmission electron microscopy (CTEM), high-resolution electron microscopy (HREM), selected-area diffraction (SAED) and convergent-beam electron diffraction (CBED). Two types of interface, namely δ-boundaries and coherent twin boundaries were identified and analysed. The δ-boundaries were studied using CTEM, SAED and CBED; the twin boundaries were investigated using the additional technique of HREM. Pseudosymmetric twinning was observed in CaZrO3 where the two domains were related to each other by either a 180° or a 90° rotation about an axis perpendicular to (101). A different type of twin boundary, where the adjacent domains were related by a 180° rotation about the normal to (100), was also noted. The observations are compared with previous studies on other ABO3-type compounds isostructural with CaZrO3.

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Electron microscopy of boundary structure in calcium zirconate

Abstract

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