  Magnetars have already been a potential candidate as gravitational wave
sources that could be detected by current and future terrestrial as well as
ground based gravitational wave detectors. In this article, we focus on the
gravitational wave emission from the distorted rotating neutron stars. The
deformation is assumed to be symmetric around an axis that is perpendicular to
the rotation axis. The form is applied in the context of a neutron star whose
magnetic field has been deformed on its own. By introducing the effects from
all magnetars in the Universe, based on various proposed magnetic field
configurations, such as poloidal, toroidal; stochastic gravitational wave
background (SGWB) can be generated. We choose to figure out exactly how the
observations of the stochastic gravitational-wave background should be used to
understand much more about physics correlated with the magnetar behaviour,
based on the restriction on the eccentricity of the magnetar.
