The optical material, the wave length sensing element, the ferroelectric fluoride monocrystal, and production method of the ferroelectric fluoride monocrystal

摘要

The transparency it is constituted from ferroelectric fluoride vis-a-vis the light of ultraviolet, visible and the infrared wave length territory, polarization reversal the optical material which is possible. Monocrystal rearing direction is the range below the 20 from each direction inside a axis, the b axis and c axis of the crystal axis, agree with monocrystal rearing direction and the temperature gradient direction inside the territory where the monocrystal is grown, or the ferroelectric which was reared with the environment where the angle which both form is below the 20 fluoride monocrystal. The raw materials and the carbon make where the seed crystal of ferroelectric fluoride which contain fluorine based chemical compound are accommodated or arranging the container of the metal make in the hot territory, the raw materials which it made melt to the low temperature territory with the melted process which makes the raw materials melt and the container by moving gradually from the hot territory the grain growth process which it crystallizes grows from the point of seed crystal below-mentioned general formula which possesses production method of the ferroelectric which is displayed with (1) fluoride monocrystal.Ba_{1 y} (Mg_{1 xZn x}) _1+yF4 (1)[In formula, x and y fills up each one 0 x 1 and 0.2 y 0.2. ]