The most prevalent trace gases do not generally
nucleate new aerosols (or even condense onto existing ones), because they are too volatile (i.e. they have a high saturation vapor pressure and thus evaporate readily).
«It's an exciting property to have in a material because you could conceivably use the different magnetic orientations to encode data in a novel kind of magnetic memory, or to
nucleate new kinds of superconducting states that might be useful in a quantum computer.»