  We report formation of magnetic textures in the ferromagnetic (FM) phase of
La$_{1-x}$Sr$_x$MnO$_3$ for $x =$ 0.125; these textures are magnetic bubbles,
magnetic stripe domains, and forced FM states. In situ Lorentz microscopy (LM)
observations show that magnetic bubbles exist in the FM insulating phase
accompanying the formation of the charge$/$orbital ordering (CO$/$OO).
Furthermore, stable magnetic bubbles still exist in an intermediate temperature
region between the CO$/$OO ($T_{CO} =$ 155 K) and FM ($T_c =$ 190 K) transition
temperatures. These magnetic bubbles are believed to originate from the
magnetocrystalline anisotropy and the dipole-dipole interaction in the FM
phase. Based on in situ LM observations as a function of both temperature and
the strength of the external magnetic field applied, a magnetic
field-temperature phase diagram is constructed, exhibiting the stabilizing
regions of the magnetic bubbles in the FM phase of
La$_{0.875}$Sr$_{0.125}$MnO$_{3}$.
