Elastic Properties of TbCoGa5 under Magnetic Field

The elastic properties of TbCoGa 5 single crystal were investigated by the measurement of the elastic constants under magnetic fields. The results of the measurement are consistent with successive component-separated magnetic orderings in TbCoGa 5 . The elastic properties in high magnetic fields indicate that the spin system is strongly affected by the quadrupole moment system in TbCoGa 5 . Such a mutual influence assumes an important role in the occurrence of the successive component-separated magnetic transitions.