Comprehensive experimental datasets of quasicrystals and their approximants.

Quasicrystals are solid-state materials that typically exhibit unique symmetries, such as icosahedral or decagonal diffraction symmetry. They were first discovered in 1984. Over the past four decades of quasicrystal research, around 100 stable quasicrystals have been discovered.

Best thermoelectric efficiency of ever-explored materials.

A thermoelectric device is a heat engine that directly converts heat into electricity. Many materials with a high figure of merit have been discovered in the anticipation of a high thermoelectric efficiency. However, there has been a lack of investigations on efficiency-based material evaluation, and little is known about the achievable limit of thermoelectric efficiency.

Electric Transport Properties of NaAlB with Covalent Frameworks.

A synthetic protocol was developed for obtaining a single phase of polycrystalline NaAlB with strongly connected intergrain boundaries. NaAlB has a unique crystal structure with a tunnel-like covalent framework of B that traps monovalent Na and trivalent Al ions. Owing to the atmospheric instability and volatility of Na, the synthesis of polycrystalline NaAlB and its physical properties have not been reported yet.

NaMgBSi: an icosa-hedral B cluster framework containing {Si} units.

Single crystals of a novel sodium-magnesium boride silicide, NaMgBSi [ = 10.1630 (3) Å, = 16.5742 (6) Å, space group (No.

Machine Learning to Predict Quasicrystals from Chemical Compositions.

Quasicrystals have emerged as the third class of solid-state materials, distinguished from periodic crystals and amorphous solids, which have long-range order without periodicity exhibiting rotational symmetries that are disallowed for periodic crystals in most cases. To date, more than one hundred stable quasicrystals have been reported, leading to the discovery of many new and exciting phenomena. However, the pace of the discovery of new quasicrystals has lowered in recent years, largely owing to the lack of clear guiding principles for the synthesis of new quasicrystals.

Phase stability and thermoelectric properties of semiconductor-like tetragonal FeAl.

Tetragonal FeAl is a high-pressure phase and is predicted to exhibit semiconductor-like behavior. We investigated the pressure and temperature synthesizing conditions of tetragonal FeAl, supported by X-ray diffractions, using synchrotron radiation during heating the sample under a pressure of 20 GPa. Based on the determined optimal conditions, we synthesized the bulk polycrystalline samples of tetragonal FeAl at 7.

Rechargeable magnesium-ion battery based on a TiSe2-cathode with d-p orbital hybridized electronic structure.

Rechargeable ion-batteries, in which ions such as Li(+) carry charges between electrodes, have been contributing to the improvement of power-source performance in a wide variety of mobile electronic devices. Among them, Mg-ion batteries are recently attracting attention due to possible low cost and safety, which are realized by abundant natural resources and stability of Mg in the atmosphere. However, only a few materials have been known to work as rechargeable cathodes for Mg-ion batteries, owing to strong electrostatic interaction between Mg(2+) and the host lattice.