Synthesis and dielectric properties of cubic GaN nanoparticles

Cubic GaN nanoparticles were synthesized directly from reactions of metal G a and NH4I in liquid ammonia in an autoclave at about 300 degreesC. The inf luence of the reacting temperature, the kind, and content of mineralizer on the synthesis of pure cubic GaN was studied. Dielectric properties of the GaN nanoparticles were measured on LRC meters under the frequency range of 120 Hz to 10 MHz and the temperature range of 23 to 650 degreesC. It is fou nd that there are three characteristics of the dielectric behavior for the nanoparticles of cubic GaN. (C) 2001 Elsevier Science Ltd. All rights reser ved.