1. Magnetically driven ferroelectricity is also caused by inhomogeneous magnetoelectric interaction. 2. This frustration leads to breaking symmetry which leads to ferroelectricity . 3. Pyroelectricity is also a necessary consequence of ferroelectricity . 4. These materials are said to exhibit ferroelectricity . 5. Proper ferroelectricity now forms in domains. 6. In 1974, R . B . Meyer predicted ferroelectricity in chiral smectic liquid crystals by pure symmetry conditions. 7. From the soft mode theory of ferroelectricity , this occurs when a ferroelectric instability is stabilized by quantum fluctuations. 8. At 760 K, the material undergoes a second order phase transition to a tetragonal perovskite structure which exhibits ferroelectricity . 9. However, partially filled " d " shell on the B-site reduces the tendency of perovskites to display ferroelectricity . 10. In addition, charge ordered ferroelectricity is suggested in Fe 3 O 4 and ( Pr, Ca ) MnO 3.
