Several RT FE/AFE Organicsfrom BI

What are the organics?

BI

• Chemical formula: C7H6N2

• Crystal structure: Pna21

MBI

• Chemical formula: C8H8N2

• Crystal structure: Pn

• Room temperature ferroelectricity.

• PS is ~5μC/cm2 , polarization in a and c.

• Layer by layer.

a

c

a

b

TFMBI

• Chemical formula: C8H5F3N2

• Crystal structure: P21/c

• Room temperature antiferroelectricity.

• Polarization along a.

a

c

View from B direction in CA, BI, MBI and TFMBI

CA

TFMBI

MBI

BI

View from c direction of CA and MBI

CA

MBI

MBI deviceSolution shearing

polarization