  We have studied the generation of magnetic fields by the Biermann mechanism
in the pair-instability supernovae explosions of the first stars. The Biermann
mechanism produces magnetic fields in the shocked region between the bubble and
interstellar medium (ISM), even if magnetic fields are absent initially. We
have performed a series of two-dimensional magnetohydrodynamic simulations with
the Biermann term and estimate the amplitude and total energy of the produced
magnetic fields. We find that magnetic fields with amplitude
$10^{-14}-10^{-17}$ G are generated inside the bubble, though the amount of
magnetic fields generated depend on specific values of initial conditions. This
corresponds to magnetic fields of $10^{28}-10^{31}$ ergs per each supernova
remnant, which is strong enough to be the seed magnetic field for a galactic
and/or interstellar dynamo.
