Journal of Materials Research


Lattice parameters and thermal expansion of GaN

Robert R. Reebera1 and Kai Wanga1

a1 Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907

Neutron powder diffraction methods with Rietveld analysis are utilized to determine GaN lattice parameters from 15 to 298.1 K. Using these measurements and literature data, we calculated the thermal expansion of gallium nitride (GaN) and predicted its higher temperature thermal expansion. The results are compared with available experimental data and earlier work.

(Received February 08 1999)

(Accepted October 26 1999)