The improvement of phase-change properties on Ge2Sb2Te5 using the superlattice-like structure Long Zheng, Yifeng Hu, Liangjun Zhai, Xiaoqin Zhu, Weihua Wu, Jianzhong Xue and Jianhao Zhang Eur. Phys. J. Appl. Phys., 80 3 (2017) 30101 Published online: 20 November 2017 DOI: 10.1051/epjap/2017170262