Magnetic properties of a triangle double-layer graphene nanoisland: a Monte Carlo study Wei Wang, Hao-Jia Wu, Pei-Nan Xie, Jia-Hui Lv and Zhou Peng Eur. Phys. J. Plus, 135 7 (2020) 605 Published online: 28 July 2020 DOI: 10.1140/epjp/s13360-020-00627-x