T.B.Massalski. Binary Alloy Phase Diagrams.

ASM International, 1990.

T.B.Massalski. Binary Alloy Phase Diagrams.

ASM International, 1990.

P.Villars, L.D.Calvert. Pearson´s Handbook of Crystallographic Data for Intermetallic Phases. ASM International, v.1 a v.4, 1997.

P.Villars, L.D.Calvert. Pearson´s Handbook of Crystallographic Data for Intermetallic Phases. ASM International, v.1 a v.4, 1997.

Grupos espaciais

International Tables for X-ray crystallography 230 grupos

Grupos espaciais

Ex: P4mm (#99)

Wyckoff

position8g x, y, z -x, -y, z -x, y, z x, -y, z

y, x, z -y, -x, z -y, x, z y, -x, z

4f x, 1/2, z -x, 1/2, z 1/2, x, z 1/2, -x, z

4e x, 0, z -x, 0, z 0, x, z 0, -x, z

4d x, x, z -x, -x, z -x, x, z x, -x, z

2c 1/2, 0, z 0, 1/2, z

1b 1/2, 1/2, z

1a 0, 0, za b

c

PowderCell 2 .0

átomo posição

Wyckoff

x y z

A 1a 0 0 0,15

B 1b 1/2 1/2 0,4

C 2c 1/2 0 0,6

D 4f 0,8 1/2 0,3

International Tables for X-ray crystallography

ABC2D4

BDEC – Base de Dados de Estruturas Cristalinas (CAPES)

fichas JCPDS ICDD – International Centre for Diffraction Data

d (Å) I (%)

3,046 100

2,638 30

1,866 30

1,591 22

4,309 10

Exercício – amostra X

d (Å) I (%)

3,046 100

2,638 30

1,866 30

1,591 22

4,309 10

Método Hanawalt