Chapter VI-B ferroelectric materials

The majority of investigators reporting in 1957 concerned themselves with barium titanate either as single crystals or in ceramics. However, the old stand-by Rochelle salt and some of the more recent materials such as guanidine aluminum sulphate hexahydrate received some attention. The present survey was not intended to include literature which dealt primarily with piezoelectric behavior, but due to the close relationship between ferroelectric and piezoelectric phenomena, the inclusion of considerable literature relating to the latter was inevitable.