antiphase ordering, lithium aluminate, surface phases
Antiphase domains are seen in single crystal gamma lithium aluminate (gamma-LiAlO2) with 16.7 nm periodicity in the <110> direction. Alternate domains have a (1/2)  shift. Beta phase lithium aluminate (beta-LiAlO2) is seen to form on the surface of the as-received wafers with an epitaxial strain limited relationship with the bulk gamma phase. The orthorhombic beta phase aligns with the a and b axes (0.528 and 0.630 nm) matching with the tetragonal gamma phase's a and c axes (0.5168 and 0.6268 nm). The gamma and beta phases are seen to have different etch rates. The beta phase converts back to the gamma phase above 450°C.
Original Publication Citation
Vanfleet, R. R., J. A. Simmons, D. W. Hill, M. M. C. Chou, and B. H. Chai."Antiphase ordering and surface phases in lithium aluminate." Journal of Applied Physics 14 (28).
BYU ScholarsArchive Citation
Vanfleet, Richard R.; Simmons, J. A.; Hill, D. W.; Chou, M. M. C.; and Chai, B. H., "Antiphase ordering and surface phases in lithium aluminate" (2008). All Faculty Publications. 152.
Physical and Mathematical Sciences
Physics and Astronomy
© 2008 American Institue of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at http://link.aip.org/link/?JAPIAU/104/093530/1
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