Spatially reconfigurable antiferromagnetic states in topologically rich free-standing nanomembranes von Jani, H, Harrison, J, Hooda, S, Prakas, S, Nandi, P, Hu, J, Zeng, Z, Lin, J, Godfrey, C, Omar, G, Butcher, T A, Raab, J, Finizio, S, Thean, A V-Y, Ariando, A, Radaelli, P G