Английская Википедия:Europium(III) nitride
Шаблон:Chembox Europium(III) nitride is a binary inorganic compound of europium and nitrogen with the chemical formula Шаблон:Chem2.[1]
Synthesis
Europium(III) nitride can be produced via the reaction of elemental europium in an ammonia stream in corundum boats in silica glass tubes. The reaction takes place at 700 °C.[2]
In this reaction, europium is oxidized and the hydrogen in ammonia is reduced.
Physical properties
Europium(III) nitride shows Van Vleck paramagnetism[3] and crystallizes in the rock salt structure with a = 501.779(6) pm.[4][5][6] Thin films of rare earth nitrides, including europium(III) nitride, tend to form oxides in the presence of oxygen.[7] The enthalpy of formation of EuN is: ΔH0 = 217.6±25.1 kJ/mol.[8] The band gap for europium(III) nitride was calculated to be 2.08 eV.[9]
Europium(III) nitride forms black crystals and reacts with water.
Uses
EuN is a semiconductor.[10]
References
Шаблон:Europium compounds Шаблон:Nitrides
