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Homogeneous liquid: Molar free energy: G 1,L Average composition: X 1 Phase fractions: f L = 1

B atoms. A atoms. Homogeneous liquid: Molar free energy: G 1,L Average composition: X 1 Phase fractions: f L = 1. Spontaneous. B atoms. A atoms. L. S. Two-phase system: solid and liquid: Molar free energy: G sep Average composition: X 1 Composition of solid phase: X S

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Homogeneous liquid: Molar free energy: G 1,L Average composition: X 1 Phase fractions: f L = 1

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  1. B atoms A atoms Homogeneous liquid: Molar free energy: G1,L Average composition: X1 Phase fractions: fL = 1 Spontaneous B atoms A atoms L S Two-phase system: solid and liquid: Molar free energy: Gsep Average composition: X1 Composition of solid phase: XS Composition of liquid phase: XL Phase fractions: fL = ? fS = ? S

  2. Free energy of pure B: GL G GS Tm,B T

  3. ALL Diagrams for animation T > Tm,B > Tm,A

  4. T > Tm,B > Tm,A

  5. T = Tm,B > Tm,A

  6. Tm,B > T1 > Tm,A XS XL

  7. Tm,B > T1 > T2 > Tm,A XS XL

  8. T > Tm,B > Tm,A T = Tm,B > Tm,A Tm,B > T1 > Tm,A Tm,B > T1 > T2 > Tm,A Tm,B > T2 > T3 > Tm,A Tm,B > T = Tm,A

  9. G1,L Gsep GS G GL Gsep,S Gsep,S XS XL X1 XB

  10. GS G GL C B A XS XL X1 XB

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