Europium monoselenide explained

Europium monoselenide is a binary inorganic compound of europium and selenium with the chemical formula EuSe.^[1] The compound forms black crystals.

Synthesis

• Heating stoichiometric amounts of pure substances in a vacuum ampoule at 800 °C:^[2]

• Heating of europium(II) oxalate with an excess of selenium in a hydrogen current:

Physical properties

Europium monoselenide forms black (or brown) crystals of cubic syngony, spatial group Fm3m, cell parameters a = 0.6185 nm, Z = 4.^{[3] [4]}

Ferromagnetic at curie temperature 7 K.

Notes and References

1. Web site: Europium Selenide . . 3 April 2023 . en.
2. Klemm . Wilhelm . Senff . Heinz . Messungen an zwei- und vierwertigen Verbindungen der seltenen Erden. VIII. Chalkogenide des zweiwertigen Europiums . Zeitschrift für anorganische und allgemeine Chemie . 5 May 1939 . 241 . 2–3 . 259–263 . 10.1002/zaac.19392410212 . 3 April 2023 . de . 0863-1786.
3. McGuire . T. R. . Shafer . M. W. . Ferromagnetic Europium Compounds . . 1 March 1964 . 35 . 3 . 984–988 . 10.1063/1.1713568 . 1964JAP....35..984M . 3 April 2023 . 0021-8979.
4. Subhadra . K. G. . Raghavendra Rao . B. . Sirdeshmukh . D. B. . X-ray determination of the Debye-Waller factors and Debye temperatures of europium monochalcogenides . Pramana . 1 June 1992 . 38 . 6 . 681–683 . 10.1007/BF02875064 . 1992Prama..38..681S . 123290263 . 3 April 2023 . en . 0973-7111.