Journal Article resistive switching Review 2D materials Oxides Research Support, Non-U.S. Gov't adjustable photoconductivity arithmetic domain walls flexible magnetic devices flexible magnetosensitive materials high order–disorder transition temperature human–machine interaction information demodulating intensity of the magnetization ion migration ion‐gated transistor mechanical regulations metal-insulator transitions nanochannels nanoconfinement nanoionic memristor nanomagnetism neuromorphic nanoionics non-volatile memory oxygen ion migration single‐phase multiferroic synapse and neuron wearable electronics ε‐Fe2O3 nanosheets