Magnetocapacitance is a property of somedielectric, insulating materials, and metal–insulator–metal heterostructures that exhibit a change in the value of theircapacitance when an externalmagnetic field is applied to them. Magnetocapacitance can be an intrinsic property of some dielectric materials, such asmultiferroic compounds like BiMnO3,[1] or can be a manifest of properties extrinsic to the dielectric but present in capacitance structures like Pd, Al2O3, and Al.[2]