Dendrite crystal morphology evolution mechanism of β-BaB2O4 crystal

Abstract

Existence of [B 3 -O 6 ] 3− hexagonal ring growth unit in melt solution of β-BaB 2 O 4 crystal was proved by the results of high temperature Raman measurements. A morphology evolution process of β-BaB 2 O 4 crystal was observed by a high temperature in-situ observation device. The crystal morphology varied with the supersaturation of growth melt solution. The mechanism of β-BaB 2 O 4 crystal morphology evolution was analyzed through the growth unit model. crystal morphology, Growth unit model: BBO crystal, Raman measurement

Nonvolatile photorefractive properties in triply doped stoichiometric Mg:Fe:Mn:LiTaO3crystals

“…[12,16] Fixing diffraction efficiency η s is more than six-times greater than that of near-stoichiometric LiTaO 3 crystals doped with Mn. [22][23][24][25][26][27][28][29] Time/s Photorefractive properties of the doped LiTaO 3 crystals depend mainly on its photorefractive sensitive centers. In the Mg:Fe:Mn:SLiTaO 3 crystals, Fe and Mn play the dominant role.…”