Escobar Cano, GiamperGiamperEscobar CanoMatsuda, MotohideMotohideMatsudaZhao, ZhijunZhijunZhaoSteinbach, FrankFrankSteinbachBreidenstein, BerndBerndBreidensteinPetersen, HilkeHilkePetersenGraff, AndreasAndreasGraffWidenmeyer, MarcMarcWidenmeyerWeidenkaff, AnkeAnkeWeidenkaffFeldhoff, ArminArminFeldhoff2025-05-072025-05-072025https://publica.fraunhofer.de/handle/publica/48737710.1002/advs.2024112512-s2.0-105001652544Textured Nd2NiO4+δ bulk ceramic membranes are fabricated via slip casting in a 0.9 T magnetic field generated by neodymium magnets. This process aligns the oxide grains with their easy-magnetization c-axis parallel to the applied magnetic field. Depending on the magnetic field's direction relative to the slip casting, grains orient either with their a,b-plane or c-axis parallel to the normal direction of the disk-shaped ceramic, thus aligning with the oxygen permeation direction. Without the magnetic field, a non-textured bulk membrane is formed. The microstructure and texture of the ceramic membranes are meticulously analyzed using advanced techniques, including X-ray diffraction, scanning and transmission electron microscopy, as well as related methods. Evaluation of the texturing effect on the oxygen permeation performance shows that the a,b-plane textured Nd2NiO4+δ bulk membrane achieves the highest oxygen permeation fluxes between 1023-1223 K. Additionally, it demonstrates impressive CO₂ stability, maintaining effective performance for at least 140 h due to preferential oxygen transport along the a,b-plane. These characteristics make Nd2NiO4+δ an auspicious material for industrial applications as an oxygen transport membrane, outperforming more susceptible perovskite-based materials. Magnetic alignment thus proves to be an effective method for achieving membrane texturing, enabling precise regulation of oxygen transport properties.entrueanisotropymagnetic orientationneodymium nickel oxideoxygen transport membranesRuddlesden-Popper oxidestextured ceramicsjournal article