CuIn₃Se₅

a

c

c/a

Δ(c/a)

A

5.76

11.52

2.0015

+0.0015

B

5.72

11.43

1.9995

−0.0005

C

5.65

11.295

1.999

−0.0010

D

5.62

11.262

2.0032

+0.0032

E

5.59

11.28

2.016

+0.0160