Elastic moduli and hardness of η-Ta2N3 from nanoindentation measurementsJudith Bourguille, Ovidiu Brinza, Florent Tétard, Sergey Nikitin and Andreas ZerrEPL, 111 1 (2015) 18006DOI: https://doi.org/10.1209/0295-5075/111/18006