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Crystal structure of boron-rich metal borides

Index Crystal structure of boron-rich metal borides

Metals, and specifically rare-earth elements (RE), form numerous chemical complexes with boron. [1]

55 relations: Allotropes of boron, Aluminium, Antiferromagnetism, Atomic radius, Boride, Boron, Boron carbide, Carbon, Coulomb's law, Crystal structure, Cubic crystal system, Cuboctahedron, Diamond, Diamond cubic, Electrical resistivity and conductivity, Electron deficiency, Electron diffraction, Electron microscope, Ethane, Europium, Extrinsic semiconductor, Gadolinium, Graphite, Hexagonal crystal family, Icosahedron, Ionic radius, Lutetium, Magnesium diboride, Metal, Molybdenum, Monochromator, Neodymium, Nitrogen, Octahedron, Orthorhombic crystal system, Platinum, Polyhedron, Raman scattering, Rare-earth element, Scandium, Seebeck coefficient, Silicon, Space group, Synchrotron, Terbium, Tetragonal crystal system, Tetrahedron, Thermal conductivity, Thermoelectric materials, Transmission electron microscopy, ..., Variable-range hopping, X-ray, X-ray crystallography, Yttrium borides, Zone melting. Expand index (5 more) »

Allotropes of boron

Boron can be prepared in several crystalline and amorphous forms.

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Aluminium

Aluminium or aluminum is a chemical element with symbol Al and atomic number 13.

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Antiferromagnetism

In materials that exhibit antiferromagnetism, the magnetic moments of atoms or molecules, usually related to the spins of electrons, align in a regular pattern with neighboring spins (on different sublattices) pointing in opposite directions.

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Atomic radius

The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding cloud of electrons.

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Boride

A boride is a compound between boron and a less electronegative element, for example silicon boride (SiB3 and SiB6).

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Boron

Boron is a chemical element with symbol B and atomic number 5.

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Boron carbide

Boron carbide (chemical formula approximately B4C) is an extremely hard boron–carbon ceramic, and covalent material used in tank armor, bulletproof vests, engine sabotage powders, as well as numerous industrial applications.

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Carbon

Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.

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Coulomb's law

Coulomb's law, or Coulomb's inverse-square law, is a law of physics for quantifying the amount of force with which stationary electrically charged particles repel or attract each other.

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Crystal structure

In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.

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Cubic crystal system

In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube.

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Cuboctahedron

In geometry, a cuboctahedron is a polyhedron with 8 triangular faces and 6 square faces.

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Diamond

Diamond is a solid form of carbon with a diamond cubic crystal structure.

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Diamond cubic

The diamond cubic crystal structure is a repeating pattern of 8 atoms that certain materials may adopt as they solidify.

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Electrical resistivity and conductivity

Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current.

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Electron deficiency

Electron deficiency occurs when a compound has too few valence electrons for the connections between atoms to be described as covalent bonds.

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Electron diffraction

Electron diffraction refers to the wave nature of electrons.

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Electron microscope

An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination.

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Ethane

Ethane is an organic chemical compound with chemical formula.

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Europium

Europium is a chemical element with symbol Eu and atomic number 63.

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Extrinsic semiconductor

An extrinsic semiconductor is one that has been doped, that is, into which a doping agent has been introduced, giving it different electrical properties than the intrinsic (pure) semiconductor.

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Gadolinium

Gadolinium is a chemical element with symbol Gd and atomic number 64.

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Graphite

Graphite, archaically referred to as plumbago, is a crystalline allotrope of carbon, a semimetal, a native element mineral, and a form of coal.

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Hexagonal crystal family

In crystallography, the hexagonal crystal family is one of the 6 crystal families, which includes 2 crystal systems (hexagonal and trigonal) and 2 lattice systems (hexagonal and rhombohedral).

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Icosahedron

In geometry, an icosahedron is a polyhedron with 20 faces.

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Ionic radius

Ionic radius, rion, is the radius of an atom's ion in ionic crystals structure.

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Lutetium

Lutetium is a chemical element with symbol Lu and atomic number 71.

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Magnesium diboride

Magnesium diboride (MgB2) is a simple ionic binary compound that has proven to be an inexpensive and useful superconducting material.

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Metal

A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard when in solid state, opaque, shiny, and has good electrical and thermal conductivity.

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Molybdenum

Molybdenum is a chemical element with symbol Mo and atomic number 42.

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Monochromator

A monochromator is an optical device that transmits a mechanically selectable narrow band of wavelengths of light or other radiation chosen from a wider range of wavelengths available at the input.

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Neodymium

Neodymium is a chemical element with symbol Nd and atomic number 60.

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Nitrogen

Nitrogen is a chemical element with symbol N and atomic number 7.

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Octahedron

In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces, twelve edges, and six vertices.

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Orthorhombic crystal system

In crystallography, the orthorhombic crystal system is one of the 7 crystal systems.

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Platinum

Platinum is a chemical element with symbol Pt and atomic number 78.

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Polyhedron

In geometry, a polyhedron (plural polyhedra or polyhedrons) is a solid in three dimensions with flat polygonal faces, straight edges and sharp corners or vertices.

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Raman scattering

Raman scattering or the Raman effect is the inelastic scattering of a photon by molecules which are excited to higher vibrational or rotational energy levels.

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Rare-earth element

A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.

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Scandium

Scandium is a chemical element with symbol Sc and atomic number 21.

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Seebeck coefficient

The Seebeck coefficient (also known as thermopower, thermoelectric power, and thermoelectric sensitivity) of a material is a measure of the magnitude of an induced thermoelectric voltage in response to a temperature difference across that material, as induced by the Seebeck effect.

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Silicon

Silicon is a chemical element with symbol Si and atomic number 14.

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Space group

In mathematics, physics and chemistry, a space group is the symmetry group of a configuration in space, usually in three dimensions.

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Synchrotron

A synchrotron is a particular type of cyclic particle accelerator, descended from the cyclotron, in which the accelerating particle beam travels around a fixed closed-loop path.

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Terbium

Terbium is a chemical element with symbol Tb and atomic number 65.

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Tetragonal crystal system

In crystallography, the tetragonal crystal system is one of the 7 crystal systems.

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Tetrahedron

In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners.

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Thermal conductivity

Thermal conductivity (often denoted k, λ, or κ) is the property of a material to conduct heat.

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Thermoelectric materials

Thermoelectric materials show the thermoelectric effect in a strong or convenient form.

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Transmission electron microscopy

Transmission electron microscopy (TEM, also sometimes conventional transmission electron microscopy or CTEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image.

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Variable-range hopping

Variable-range hopping, or Mott variable-range hopping, is a model describing low-temperature conduction in strongly disordered systems with localized charge-carrier states.

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X-ray

X-rays make up X-radiation, a form of electromagnetic radiation.

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X-ray crystallography

X-ray crystallography is a technique used for determining the atomic and molecular structure of a crystal, in which the crystalline atoms cause a beam of incident X-rays to diffract into many specific directions.

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Yttrium borides

Yttrium boride refers to a crystalline material composed of different proportions of yttrium and boron, such as YB2, YB4, YB6, YB12, YB25, YB50 and YB66.

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Zone melting

Zone melting (or zone refining or floating zone process or travelling melting zone) is a group of similar methods of purifying crystals, in which a narrow region of a crystal is melted, and this molten zone is moved along the crystal.

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References

[1] https://en.wikipedia.org/wiki/Crystal_structure_of_boron-rich_metal_borides

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