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Boron Phosphide
Boron phosphide (BP) (also referred to as boron monophosphide, to distinguish it from boron subphosphide, B12P2) is a chemical compound of boron and phosphorus. It is a semiconductor. History Crystals of boron phosphide were synthesized by Henri Moissan as early as 1891. Appearance Pure BP is almost transparent, n-type crystals are orange-red whereas p-type ones are dark red. Chemical properties BP is not attacked by acids or boiling aqueous alkali water solutions. It is only attacked by molten alkalis. Physical properties BP is known to be chemically inert and exhibit very high thermal conductivity. Some properties of BP are listed below: *lattice constant 0.45383 nm *coefficient of thermal expansion 3.65 /°C (400 K) *heat capacity CP ~ 0.8 J/(g·K) (300 K) *Debye temperature = 985 K *Bulk modulus 152 GPa *relatively high microhardness of 32 GPa (100 g load). *electron and hole mobilities of a few hundred cm2/(V·s) (up to 500 for holes at 300 K) *high thermal conductivity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zincblende (crystal Structure)
In crystallography, the cubic (or isometric) crystal system is a crystal system where the Crystal_structure#Unit_cell, unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals. There are three main varieties of these crystals: *Primitive cubic (abbreviated ''cP'' and alternatively called simple cubic) *Body-centered cubic (abbreviated ''cI'' or bcc) *Face-centered cubic (abbreviated ''cF'' or fcc, and alternatively called Close-packing_of_equal_spheres, ''cubic close-packed'' or ccp) Each is subdivided into other variants listed below. Although the ''unit cells'' in these crystals are conventionally taken to be cubes, the primitive_cell, primitive unit cells often are not. Bravais lattices The three Bravais lattices in the cubic crystal system are: The primitive cubic lattice (cP) consists of one Lattice_(group), lattice point on each corner of the cube; this means each simple cubic unit cell has in total one latt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
