  The prospect of all electrically controlled writing of ferromagnetic bits is
highly desirable for developing scalable and energy-efficient spintronics
devices. In the present work, we perform micromagnetic simulations to
investigate the electric field-induced strain mediated magnetization switching
in artificial spin ice (ASI) based multiferroic system, which is proposed to
have a significant decrease in Joule heating losses compared to electric
current based methods. As the piezo electric strain-based system cannot switch
the magnetization by $180^\circ$ in ferromagnets, we propose an ASI
multiferroic system consisting of the peanut-shaped nanomagnets on
ferroelectric substrate with the angle between the easy axis and hard axis of
magnetization less than $90^\circ$. Here the piezoelectric strain-controlled
magnetization switching has been studied by applying the electric field pulse
at different angles with respect to the axes of the system. Remarkably,
magnetization switches by $180^\circ$ only if the external electric field pulse
is applied at some specific angles, close to the anisotropy axis of the system
( $\sim 30^\circ - 60^\circ$). Our detailed analysis of the demagnetization
energy variation reveals that the energy barrier becomes antisymmetric in such
cases, facilitating the complete magnetization reversal. Moreover, we have also
proposed a possible magnetization reversal mechanism with two sequential
electric field pulses of relatively smaller magnitude. We believe that the
present work could pave the way for future ASI-based multiferroic system for
scalable magnetic field-free low power spintronics devices.
