The Main Fragment of the Own Magnetic Field of Magnetic Systems of Electrical Devices Is the Spin Magnetic Flux

It is noted that the spin magnetic flux of an electron, being the basis of the proper magnetic field of ferromagnets, has not yet been established. It is believed that the quantum of magnetic flux is created exclusively by Cooper pairs, that it is half the quantum of F. London and is not associated with the spins of electrons. The purpose of the study is to establish the spin magnetic flux of an electron. The problem here is that the generally accepted concept of electron spin does not allow it to be calculated, which is due to the uncertainty of the electron structure. The task of the work, therefore, is to accept additional temporary (working) assumptions.