Europium(II)_selenide

Europium monoselenide

Europium monoselenide

Chemical compound

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

Quick Facts Names, Identifiers ...

Synthesis

  • Heating stoichiometric amounts of pure substances in a vacuum ampoule at 800 °C:[2]
Eu + Se → EuSe
  • Heating of europium(II) oxalate with an excess of selenium in a hydrogen current:
EuC2O4 + Se + H2 → EuSe + H2O + CO2 + CO

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.

References

  1. [1]
    "Europium Selenide". American Elements. Retrieved 3 April 2023.
  2. [2]
    Klemm, Wilhelm; Senff, Heinz (5 May 1939). "Messungen an zwei- und vierwertigen Verbindungen der seltenen Erden. VIII. Chalkogenide des zweiwertigen Europiums". Zeitschrift für anorganische und allgemeine Chemie (in German). 241 (2–3): 259–263. doi:10.1002/zaac.19392410212. ISSN 0863-1786. Retrieved 3 April 2023.
  3. [3]
    McGuire, T. R.; Shafer, M. W. (1 March 1964). "Ferromagnetic Europium Compounds". Journal of Applied Physics. 35 (3): 984–988. Bibcode:1964JAP....35..984M. doi:10.1063/1.1713568. ISSN 0021-8979. Retrieved 3 April 2023.
  4. [4]
    Subhadra, K. G.; Raghavendra Rao, B.; Sirdeshmukh, D. B. (1 June 1992). "X-ray determination of the Debye-Waller factors and Debye temperatures of europium monochalcogenides". Pramana. 38 (6): 681–683. Bibcode:1992Prama..38..681S. doi:10.1007/BF02875064. ISSN 0973-7111. S2CID 123290263. Retrieved 3 April 2023.
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