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- Hiroyuki Takakura, CÃ©sar GÃ³mez, Akiji Yamamoto, Marc de Boissieu, An Pang Tsai
- Nature materials
- 2007

Icosahedral quasicrystals (i-QCs) are long-range ordered solids that show non-crystallographic symmetries such as five-fold rotations. Their detailed atomic structures are still far from completelyâ€¦ (More)

- Akiji Yamamoto
- Acta crystallographica. Section A, Foundations ofâ€¦
- 2004

The consideration of two approximants of the first stable dodecagonal Ta-Te quasicrystal shows that the five-dimensional (5D) space group of the dodecagonal phase is P12m2(12(5)mm) and the structureâ€¦ (More)

- Yuichi Michiue, Akiji Yamamoto, Masahiko Tanaka
- Acta crystallographica. Section B, Structuralâ€¦
- 2006

A generalized approach is proposed for the structure description of the homologous series Ga(4)Ti(m-4)O(2m-2) with crystallographic shear (CS) structures based on that of rutile. A (3 +â€¦ (More)

- Akiji Yamamoto
- Acta crystallographica. Section A, Foundations ofâ€¦
- 2010

An analytical expression is derived for the short-range order (SRO) magnetic neutron diffuse scattering intensity in quasicrystals, and it is applied to a fictitious model of spin-orientationâ€¦ (More)

- Akiji Yamamoto
- Science and technology of advanced materials
- 2008

Recently a software package for the structure analysis of quasicrystals has been released, giving a better environment for determining quasicrystal structures. Therefore we can analyze theirâ€¦ (More)

- CÃ©sar GÃ³mez, Satoshi Ohhashi, Akiji Yamamoto, An Pang Tsai
- Inorganic chemistry
- 2008

The structures of three quasicrystal approximant phases in the TM-Mg-Zn (TM = Hf, Zr, Ti) systems with the analyzed compositions Hf5Mg18Zn77, Zr5Mg18Zn77, and Ti5.5Mg17.5Zn77 have been synthesized,â€¦ (More)

- Akiji Yamamoto
- Acta crystallographica. Section A, Foundations ofâ€¦
- 2005

Patterns with octagonal and icosahedral symmetries obtained from periodic two-dimensional (2D) 8-grids and three-dimensional (3D) 12-grids by the dual method are shown to be superstructures of theâ€¦ (More)

- Masahiko Tanaka, Yoshio Katsuya, Akiji Yamamoto
- The Review of scientific instruments
- 2008

A new large radius imaging plate diffraction camera for high-resolution and high-throughput synchrotron x-ray powder diffraction by means of multiple exposures has been developed for an insertionâ€¦ (More)

- Akiji Yamamoto
- Acta crystallographica. Section A, Foundations ofâ€¦
- 2010

A theory for the diffuse scattering intensity owing to short-range order (SRO) in quasicrystals is given. The diffuse scattering intensity can be calculated based on higher-dimensional cluster modelsâ€¦ (More)

- Akiji Yamamoto
- Physical review letters
- 2004

A section method for projected structures of icosahedral quasicrystals (IQCs) is given. A structure projected along a specified direction can be calculated directly from a six-dimensional periodicâ€¦ (More)