International journal of minerals, metallurgy and materials 29(10), 1901-1907 (2022). doi:10.1007/s12613-022-2440-5 Ma, Y.; Souza Filho, I.R.; Zhang, X.; Nandy, S.; Barriobero-Vila, P.; Requena, G.; Vogel, D.; Rohwerder, M.; Ponge, D.; Springer, H.; Raabe, D.: Hydrogen-based direct reduction of iron oxide at 700°C: Heterogeneity at pellet and microstructure scales. In: International Journal of Minerals, Metallurgy and Materials. Vol. 29 (2022) 10, 1901-1907. (DOI: /10.1007/s12613-022-2440-5) International Journal of Minerals, Metallurgy and Materials