  Some special features of magnetically deformed multi-electron atoms in the
crustal region of strongly magnetized neutron stars (magnetars) are studied
with the relativistic version of semi-classical Thomas-Fermi model. An
analytical solution of Poisson's equation with cylindrical symmetry is
obtained. The variation of atomic dimension with magnetic field strength is
also studied. An expression for atomic quadrupole moment, appears because of
magnetic deformation is derived. The effect of atomic quadrupole-quadrupole
interaction in the equation of state of crustal matter of magnetar is briefly
discussed.
