Plasma sputter-type negative ion source deposition of zirconium nitride on aluminum substrate - Cosiñero, Hannah Shamina O.; Tuico, Anthony R.; Patricio, Floyd Willis I.; Viernes, Meryll Angelica J.; Aves, Ron Darell A.; Ramos, Henry J. (Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress, 2015)