The dissipation of toroidal magnetic fields and spin?down evolution of young and strongly magnetized pulsars

Magnetars are a kind of pulsars powered mainly by superhigh magnetic fields. They popular sources with many unsolved issues in themselves, but also linked to various high energy phenomena, such as QPOs, giant flares, fast radio bursts and super-luminous supernovae. In this work, we first review our recent works on the dissipation toroidal fields magnetars rotationally pulsars, then spin-down evolution young strongly magnetized especially magnetars. We present an interesting important relation between magnetization parameter, field magnetar crust. Finally, introduce two progress: explain "anti-gltich" events thermal plastic flow model revisit expression braking index $n$, which is independent second derivative spin frequency pulsar give some proposals for future work.