Standard Gibbs free energies of formation for Cu–Dy intermetallic compounds.

Intermetallic compound	Formula	T/K	ΔG⊖f/kJ mol−1
Cu5Dy	ΔG⊖f(Cu5Dy) = −3FΔE4	773	−111.75 ± 1.16
		803	−109.72 ± 2.61
		833	−109.14 ± 1.45
		863	−108.27 ± 2.03
Cu9/2Dy		773	−108.01 ± 1.19
		803	−105.89 ± 2.61
		833	−105.23 ± 1.42
		863	−104.42 ± 1.91
Cu2Dy		773	−76.96 ± 1.65
		803	−75.21 ± 2.45
		833	−74.27 ± 1.92
		863	−73.59 ± 1.81
CuDy		773	−52.95 ± 1.84
		803	−51.65 ± 2.38
		833	−50.31 ± 1.83
		863	−49.68 ± 1.92