Ferrielectricity

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Abstract
A new group of materials has been found exhibiting ferroelectric behavior. It was found that this behavior appears in a mixture of antiferroelectric compounds (sodium vanadate and sodium niobate; also sodium niobate and silver niobate) neither of which exhibits this phenomenon at low field strength in their pure states. Coercivity as well as polarization is composition dependent. The onset of the ferroelectric state is a function of applied field, which in some compositions is considerably higher than the coercive field. Switching transients of a form not previously reported are exhibited by these materials.