Properties and Modification of Bismuth-Layered Structure Ferroelectric Materials and Application in Sports

Table 1

32 crystallographic point groups.

T	Th	O	Td	Oh
C4	S4	C4h	D4	C4v	D2d	D4h
D2	C2v	D2h
C2	Cs	C2h
C1	Ci
C3	S6	D3	C3v	D3d
C6	C3h	C6h	D6	C6v	D3h	D6h