We developed a new environment-sensing device based on the opto-ionic-electronic phenomena of an octahedral molybdenum metal (Mo₆) cluster. When the Mo₆ cluster is electrochemically deposited on a transparent electrode in an organic solvent containing a trace amount of water, the water permeates the deposited film. During the process, some ligand species that stabilize the frame structure of the Mo₆ cluster are substituted with hydroxyl groups, and the negatively charged frame structure of the Mo₆ cluster unit is stabilized by hydronium counterions. As a result, the transparent film of the Mo₆ cluster fabricated by this method exhibits ionic-electronic mixed conduction of the hydronium ion. The ionic conduction greatly changes depending on the temperature and humidity in the atmosphere, and the electrical conductivity greatly changes depending on the wavelength and intensity of the irradiated light. These unique multisensing properties present new possibilities for environmental sensing applications.

The easy-magnetization axis of mordenite zeolite was determined using commercially available mordenite powder. The well-dispersed suspension of the powder was consolidated by slip casting in a 12-T static magnetic field. The thick bulk deposit was cut into a dice in order to investigate the XRD patterns from the mutually orthogonal surfaces of the consolidated mordenite compacts, the normal lines of which surfaces were parallel and perpendicular to the applied magnetic field. The easy-magnetization axis of mordenite was determined to be the b axis based on the XRD measurements.

Textured Nd₂NiO_4+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 Nd₂NiO_4+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 Nd₂NiO_4+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.

The magneto-orientation of mordenite zeolite during slip casting processes in a 12 T strong magnetic field was investigated using a commercial powder. When the as-received commercial powder was used, no orientation was observed. On the other hand, the mordenite zeolite was preferentially b-axis-oriented in the compacted disk prepared from powder classified by sedimention. Particle size distribution measurements revealed that agglomerated secondary particles larger than 2.8 μm in size were removed by the sedimentation classification.