Patent ID: 7911927

Claim:
A layered Bi compound nanoplate comprising an Aurivillius layered Bi Compound single crystal having a composition expressed by formula: (Bi 2 O 2 )A m−1 B m O 3m+1 , where A is Sr, Ba, Ca or Bi, B is Ti, Ta or N and m≧1, wherein the layered Bi compound nanoplate has its composition expressed by Bi 4 Ti 3 O 12 and its crystal structure that is a perovskite slab type layered structure and is in the form of a rectangular solid having three independent sides in [1-10], [001] and [110] directions of said crystal structure and of which the sides in the [110] and [1-10] directions have a length of about 1 μm and the side in the [001] direction has a length of about 300 nm or the sides in the [110] and [001] directions have a length of about 1 μm and the side in the [1-10] direction has a length of about 300 nm.