However, in principle there should be a (perhaps very small?) component due to the inner magnetic momentum of neutrons [1], right? After all, they are made of q

However, in principle there should be a (perhaps very small?) component due to the inner magnetic momentum of neutrons [1], right? After all, they are made of quarks, which have nonzero charge. [1] https://en.wikipedia.org/wiki/Neutron_magnetic_moment https://en.wikipedia.org/wiki/Neutron_magnetic_moment