Artikel: Thulium monoselenide GudangMovies21 Rebahinxxi

• Source: Thulium monoselenide

Thulium monoselenide is a mixed valence compound of selenium and thulium with the chemical formula TmSe.




Preparation


Thulium monoselenide can be prepared by directly reacting thulium and selenium:

Tm + Se → TmSe




Properties


Thulium monoselenide forms reddish-brown cubic crystals, space group Fm3m, unit cell parameters a = 0.5640 nm, Z = 4, and a structure similar to that of sodium chloride.
The compound melts congruently at 2060 °C, and at 1100 °C and 1730 °C, phase transitions occur in the compound. The Néel temperature of thulium monoselenide is 1.85–2.8 K.




References

Kata Kunci Pencarian:

• Thulium monoselenide
• Thulium selenide
• Praseodymium monoselenide
• Holmium
• Lutetium
• Cubic crystal system
• Samarium monochalcogenides
• Erbium
• Praseodymium
• Germanium