Alkaline-Alkaline Earth Fluoride Carbonate Crystals ABCO₃F (A = K, Rb, Cs; B = Ca, Sr, Ba) as Nonlinear Optical Materials

Abstract

A new series of alkaline-alkaline earth fluoride carbonates (KSrCO(3)F, RbSrCO(3)F, KCaCO(3)F, RbCaCO(3)F, CsCaCO(3)F, and Cs(3)Ba(4)(CO(3))(3)F(5)) were synthesized by spontaneous crystallization with molten fluxes. Their crystal structures, except for Cs(3)Ba(4)(CO(3))(3)F(5), exhibit the stacking of [AF](∞) (A = K, Rb, Cs) and [B(CO(3))](∞) (B = Ca, Sr) layers, and the coplanar alignment of [CO(3)] triangles. The results from the UV-vis diffuse reflectance spectroscopy study of the powder samples indicated that the short-wavelength absorption edges were all below 200 nm, except for Cs(3)Ba(4)(CO(3))(3)F(5), which is about 210 nm. Second-harmonic generation (SHG) on polycrystalline samples was measured using the Kurtz and Perry technique, which indicated that these carbonates are all phase-matchable materials in both visible and the UV region, and their measured SHG coefficients were about 3.33, 3.33, 3.61, 1.11, 1.11, and 1.20 times as large as that of d(36) (KDP), respectively.

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

“…There is a medium-weak band at 680−775 cm -1 , which corresponds to the bending vibration of δ-(OCO) of (CO 3 ) 2-groups. 27 Figure 2. Coordination environments of Eu (a) and Na (b) atoms.…”

Optical absorption and heating rate dependent glass transition in vanadyl doped calcium oxy-chloride borate glasses

“…Rojas et al [21] reported that calcium borate glasses are useful for application as thermo luminescent dosimeter. Non-linear optical (NLO) properties of the alkaline earth materials were studied by Zou et al [22] and found that these materials are suitable for non linear optical and ultraviolet applications. The above literature survey suggests that the alkaline earth oxy-halide borate glasses are of technological importance.…”

Study of growth condition and characterization of bisthiourea–zinc acetate (BTZA) crystal grown in silica gel

“…Ultraviolet (UV) nonlinear optical (NLO) crystals can be considered as a clean energy source for processing of materials, and also play an important role in laser science and technology [3]. Many efforts have been directed towards understanding the relationship between the composition, structure, and NLO properties of crystals, which are critical in the development of new NLO crystals [4].…”