Data of high intensity peak of XRD at different temperatures

θ (degree)

β (radian) (´10⁻³)

Particle size (nm)

GBCO—30˚C

13.451

5.46

25.42

GBCO—500˚C

15.963

5.22

27.64

GBCO—850˚C

16.217

4.13

33.60

GBCO—900˚C

19.245

3.80

36.52