Structure and Properties of Boron-Very-Rich Boron Carbides: B12 Icosahedra Linked through Bent CBB Chains

Breaking the icosahedra in boron carbide.

Findings of laser-assisted atom probe tomography experiments on boron carbide elucidate an approach for characterizing the atomic structure and interatomic bonding of molecules associated with extraordinary structural stability. The discovery of crystallographic planes in these boron carbide datasets substantiates that crystallinity is maintained to the point of field evaporation, and character...

Thermal conductivity behavior of boron carbides.

Knowledge of the thermal conductivity of boron carbide is necessary o evaluate its potential for high temperature thermoelectric energy conversion applications. We have measured the thermal diffusivity of hot -pressed boron carbide B1_xCx samples as a function of composition (0.1 < x < 0.2), temperature (300 K to 1700 K) and temperature cycling. These data in concert with density and specific h...

Lattice Vibrations, MIR and FIR Optical Properties of Boron and Icosahedral Boron-Rich Borides

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Lattice Vibrations, MIR and FIR Optical Properties of Boron and Icosahedral Boron-Rich Borides I. Alpha-Rhombohedral Structure Group

General remarks on the structure and the lattice vibrations o f the different structure groups o f boron and icosahedral boron-rich borides are made. In detail, the lattice vibrations o f the alpha-rhombohedral boron structure group are systematically investigated by group theory. Reflectivity spectra o f boroncarbide o f different chemical com position and preparation and o f B60 were measured...

Conductivities and Seebecis Coefficients of Boron Carbides: “softening-bipolaron” Hopping