Magnesium diboride
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Magnesium diboride is the inorganic compound with the formula MgB2. It is a dark gray, water-insoluble solid. The compound has attracted attention because it becomes superconducting at 39 K (−234 °C). In terms of its composition, MgB2 differs strikingly from most low-temperature superconductors, which feature mainly transition metals. Its superconducting mechanism is primarily described by BCS theory.
Quick Facts Identifiers, Properties ...
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ECHA InfoCard | 100.031.352 |
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Properties | |
MgB2 | |
Molar mass | 45.93 g/mol |
Density | 2.57 g/cm3 |
Melting point | 830 °C (1,530 °F; 1,100 K) (decomposes) |
Structure | |
Hexagonal, hP3 | |
P6/mmm, No. 191 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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