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Manganese arsenide (MnAs) is an intermetallic compound, an arsenide of manganese.It forms ferromagnetic crystals with hexagonal (NiAs-type) crystal structure, which convert to the paramagnetic orthorhombic β-phase upon heating to 45 °C (113 °F).
These compounds are mainly of academic interest. For example, "sodium arsenide" is a structural motif adopted by many compounds with the A 3 B stoichiometry. Indicative of their salt-like properties, hydrolysis of alkali metal arsenides gives arsine: Na 3 As + 3 H 2 O → AsH 3 + 3 NaOH Nickel arsenide is a common impurity in ores of nickel.
Manganese(VII) compounds (1 C, 2 P) O. Organomanganese compounds (6 P) Pages in category "Manganese compounds" ... Manganese arsenide; Manganese disilicide; Manganese ...
Manganese(VII) oxide (manganese heptoxide) is an inorganic compound with the formula Mn 2 O 7. Manganese heptoxide is a volatile liquid with an oily consistency. It is a highly reactive and powerful oxidizer that reacts explosively with nearly any organic compound. It was first described in 1860. [1] It is the acid anhydride of permanganic acid.
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
Manganese has no satisfactory substitute in these applications in metallurgy. [53] Steelmaking, [74] including its ironmaking component, has accounted for most manganese demand, presently in the range of 85% to 90% of the total demand. [61] Manganese is a key component of low-cost stainless steel.
Manganese(IV) oxide is a blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules. The principal use for MnO 2 is for dry-cell batteries, such as the alkaline battery and the zinc–carbon battery. [6] Manganese(VII) oxide is dark green in its crystalline form.
Gallium manganese arsenide, chemical formula (Ga,Mn)As is a magnetic semiconductor. It is based on the world's second most commonly used semiconductor , gallium arsenide, (chemical formula GaAs ), and readily compatible with existing semiconductor technologies.