  We investigate the generation of the entanglement in a cavity magnomechanical
system, which consists of three modes: a magnon mode, a microwave cavity mode
and a mechanical vibration mode, the couplings of the magnon-photon and the
magnon-phonon are achieved by the magnetic dipole interaction and the
magnetostrictive interaction, respectively. By introducing a squeezing of the
magnon mode, the magnon-photon and the magnon-phonon entanglements are
significantly enhanced compared with the case without inserting the magnon
squeezing. We find that an optimal parameter of the squeezing exists, which
yields the maximum entanglement. This study provides a new idea for exploring
the properties of quantum entanglement in the the cavity magnomechanical
systems, and may have some potential applications in the quantum state
engineering.
