Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1491729 | Materials Research Bulletin | 2009 | 4 Pages |
Abstract
A TmAlB4 crystal with a ThMoB4-type (β-type) structure phase related to a hexagonal AlB2-type structure was studied by electron diffraction and high-resolution electron microscopy. A high-resolution image clearly exhibits an intergrown lamellar structure of a YCrB4-type (α-type) phase in the matrix of the β-type phase in TmAlB4 crystal. The lamellar structure can be characterized by a tiling of deformed hexagons, which are a common structure unit in the α-type and β-type structures. The intergrown nanostructure is considered to be attributed to the origin of low temperature anomalies in physical properties.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Kunio Yubuta, Takao Mori, Andreas Leithe-Jasper, Yuri Grin, Shigeru Okada, Toetsu Shishido,