Synthesis of GaN nanorods using Tantalum catalyst by magnetron sputteringHong Li, Chengshan Xue, Huizhao Zhuang, Jinhua Chen, Zhaozhu Yang and Lixia QinEur. Phys. J. Appl. Phys., 40 2 (2007) 129-131DOI: https://doi.org/10.1051/epjap:2007146