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  Intergrowth structure of alpha-phase in beta-type TmAlB4 compound studied by high-angle annular detector dark-field scanning transmission electron microscopy

Yubuta, K., Mori, T., Leithe-Jasper, A., Borrmann, H., Grin, Y., Okada, S., et al. (2014). Intergrowth structure of alpha-phase in beta-type TmAlB4 compound studied by high-angle annular detector dark-field scanning transmission electron microscopy. Journal of Solid State Chemistry, 219, 274-279. doi:10.1016/j.jssc.2014.07.038.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-2494-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9C74-4
Genre: Journal Article

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 Creators:
Yubuta, Kunio1, Author
Mori, Takao1, Author
Leithe-Jasper, Andreas2, Author              
Borrmann, Horst3, Author              
Grin, Yuri4, Author              
Okada, Shigeru1, Author
Shishido, Toetsu1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
3Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863410              
4Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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 Abstract: Nanostructure of a ThMoB4-type (beta-type) TmAlB4 compound, in which YCrB(4)type (alpha-type) domains are locally intergrown, is studied by high-angle annular detector dark-field scanning transmission electron microscopy (HAADF-STEM). Z-contrast images by HAADF-STEM directly represent the arrangements of Tm atoms located at centers of heptagonal atomic columns of B atoms as bright dots, and give us detailed information of intergrowth of type domains in the matrix of the beta-type phase, which coherently occurs. Structural and bonding analyses for beta-TmAlB4 point out the closeness in atomic interactions and energy of the alpha- and beta-type structures which support the easy formation of such nanostructure intergrowths. From combination between HAADF-STEM and electronic structure calculation, a detailed local crystal structure with intrinsic building defects is effectively revealed. (C) 2014 Elsevier Inc. All rights reserved.

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 Dates: 2014-08-062014-08-30
 Publication Status: Published in print
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Title: Journal of Solid State Chemistry
Source Genre: Journal
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Publ. Info: Orlando, Fla. : Academic Press
Pages: - Volume / Issue: 219 Sequence Number: - Start / End Page: 274 - 279 Identifier: ISSN: 0022-4596
CoNE: /journals/resource/954922646045