Barium Boride

Barium boride (BaB2) is a binary compound consisting of barium and boron. It has a crystalline structure with a hexagonal symmetry and a lattice constant of approximately 0.3434 nm.

Barium boride is a refractory material that exhibits excellent high-temperature stability and chemical resistance. It can be synthesized through various methods, including reaction of barium and boron in a graphite crucible at high temperatures or by reacting barium metal with boron carbide.

The physical properties of barium boride include a melting point of approximately 2200°C, a density of 4.52 g/cm3, and a hardness of 9 on the Mohs scale. It is insoluble in water and most acids but can react with strong oxidizing agents.

Barium boride also exhibits interesting electronic properties. It is a superconductor with a critical temperature of approximately 2.8 K and a critical magnetic field of approximately 15 T. It has been studied for its potential applications in electronic devices such as Josephson junctions and high-temperature superconductors.

In summary, barium boride is a refractory binary compound with a hexagonal crystal structure. It exhibits excellent high-temperature stability and chemical resistance and possesses interesting electronic properties as a superconductor.