Rj. Wagner et al., SUBMILLIMETER EPR EVIDENCE FOR THE AS ANTISITE DEFECT IN GAAS (REPRINTED FROM SOLID-STATE COMMUN, VOL 36, PG 15-17, 1980), Solid state communications, 88(11-12), 1993, pp. 887-889
A new EPR spectrum has been observed in semi-insulating GaAs with a su
bmillimeter laser magnetic resonance spectrometer. The spectrum is iso
tropic with g = 2.04 +/- 0.01 at nu = 11.236 cm-1. The hyperfine inter
action parameter Absolute value of A (I = 3/2) is 0.090 +/- 0.001 cm-1
. The spectrum is attributed to the As antisite defect in GaAs and the
parameters are compatible with the P antisite defect in GaP.