Magnetic frustration in double perovskite LaSrNiRuO6Xuedong Ou, Fengren Fan, Xiangtuo Chen, Tao Li, Lixiang Jiang, Alessandro Stroppa, Xiaoping Ouyang and Hua WuEPL, 123 5 (2018) 57003DOI: https://doi.org/10.1209/0295-5075/123/57003