Deep learning enables rapid identification of a new quasicrystal from multiphase powder diffraction patterns

…, N Miyao, A Ishikawa, R Tamura, S Ohhashi… - Advanced …, 2024 - Wiley Online Library
Since the discovery of the quasicrystal, approximately 100 stable quasicrystals are identified.
To date, the existence of quasicrystals is verified using transmission electron microscopy; …

Formation and structure of 1/1 cubic approximants in the Cd-Mg-Ce system: The identification of a new structural variant

F Labib, N Fujita, H Takakura, S Ohhashi… - Journal of Alloys and …, 2023 - Elsevier
The stability region of the 1/1 cubic crystalline approximant to icosahedral quasicrystal in the
Cd-Mg-Ce system was investigated in detail. The partial isothermal section of the ternary …

Icosahedral quasicrystals and their cubic approximants in the Cd-Mg-RE (RE= Y, Sm, Gd, Tb, Dy, Ho, Er, Tm) systems

F Labib, N Fujita, S Ohhashi, AP Tsai - Journal of Alloys and Compounds, 2020 - Elsevier
The formation and stability of icosahedral quasicrystals and their cubic approximants in the
Cd-Mg-RE (RE = Y, Sm, Gd, Tb, Dy, Ho, Er, Tm) systems are studied in detail, with a focus on …

Magnetic properties of icosahedral quasicrystals and their cubic approximants in the Cd–Mg–RE (RE= Gd, Tb, Dy, Ho, Er, and Tm) systems

…, N Fujita, T Yamada, S Ohhashi… - Journal of Physics …, 2020 - iopscience.iop.org
A systematic investigation has been performed to elucidate effects of rare earth type and
structural complexity on magnetic properties of icosahedral quasicrystal (iQC) and their cubic …

Formation and crystallographic orientation study of quasicrystal, 2/1 and 1/1 approximants in Cd–Mg–Y system using electron backscatter diffraction (EBSD)

F Labib, S Ohhashi, AP Tsai - Philosophical Magazine, 2019 - Taylor & Francis
A partial isothermal ternary phase diagram of the Cd–Mg–Y system including icosahedral
quasicrystal (i-QC) and 1/1 approximant (APP) was obtained at 673 K. The stability of the i-QC …

[HTML][HTML] Highly tuneable icosahedral orders in complex Al-Pd-W-Fe alloys

M Aoyama, S Ohhashi, H Takakura, Y Iwasaki… - Journal of Alloys and …, 2025 - Elsevier
We report the formation of novel complex intermetallics in Al-Pd-W-Fe alloys with varying
icosahedral orders. The quaternary system is akin to the Al-Pd-Cr-Fe and Al-Pd-Mo-Fe systems…

Fabrication and optical properties of nanocomplexes composed of metal nanoparticles and organic dyes

A Masuhara, S Ohhashi, H Kasai, S Okada… - Journal of Nonlinear …, 2004 - World Scientific
We have prepared nanocomplexes composed of silver or gold nanoparticles as a core and
merocyanine or phthalocyanine as a shell portion by the co-reprecipitation method. From …

Disordered structures of the TM− Mg− Zn 1/1 quasicrystal approximants (TM= Hf, Zr, or Ti) and chemical intergrowth

CP Gómez, S Ohhashi, A Yamamoto… - Inorganic Chemistry, 2008 - ACS Publications
The structures of three quasicrystal approximant phases in the TM−Mg−Zn (TM = Hf, Zr, Ti)
systems with the analyzed compositions Hf 5 Mg 18 Zn 77 , Zr 5 Mg 18 Zn 77 , and Ti 5.5 Mg …

Structural-transition-driven antiferromagnetic to spin-glass transition in Cd–Mg–Tb 1/1 approximants

…, N Fujita, T Yamada, S Ohhashi… - Journal of Physics …, 2020 - iopscience.iop.org
The magnetic susceptibility of the 1/1 approximants to icosahedral quasicrystals in a series
of Cd 85− x Mg x Tb 15 (x= 5, 10, 15, 20) alloys was investigated in detail. The occurrence of …

HAADF-STEM observation of unique quasicrystalline precipitates from solid solution in Mg-Cd-Yb system

S Ohhashi, K Saitoh, A Kato, AP Tsai - Materials Characterization, 2021 - Elsevier
We found that solid-solution and aging treatments could promote precipitation of fine quasicrystal
(Qc) particles in the Mg matrix of the Mg-Cd-Yb system. Precipitated Qc particles in the …