Adjective
displacive (comparative more displacive, superlative most displacive)
That involves or causes displacement
Ferroelectric phase transitions are often characterized as either displacive (such as BaTiO 3 ) or order-disorder (such as NaNO 2 ), though often phase transitions will demonstrate elements of both behaviors. Source: Internet
The transition caused by ionic polarizations in crystals is called a displacive phase transition. Source: Internet