Lithium iodate (LiIO₃) is a negative uniaxial crystal for nonlinear, acousto-optical and piezoelectric applications. It has been utilized for 347 nm ruby lasers.

Properties

Mohs hardness The Mohs scale ( ) of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fair ...

of lithium iodate is 3.5–4. Its linear

thermal expansion Thermal expansion is the tendency of matter to increase in length, area, or volume, changing its size and density, in response to an increase in temperature (usually excluding phase transitions). Substances usually contract with decreasing temp ...

coefficient at is 2.8·10⁻⁵/°C (a-axis) and 4.8·10⁻⁵/°C (c-axis). Its transition to β-form begin at and it is irreversible.

References

Lithium salts Iodates Nonlinear optical materials {{Inorganic-compound-stub