Optical and dielectric properties of lithium iodate based on the IR reflection and raman scattering spectra

(H3O)Li2(IO3)3: crystal structure and IR spectrum

“…Metal iodates are well-known and have garnered significant attention from researchers due to their important functionalities. These include electricity, dielectricity, piezoelectricity, ferroelectricity, pyroelectricity, SHG, and luminescence [1][2][3][4][5][6]. This can be attributed to the pentavalent iodine, which has stereochemically active lone pair electrons in the 5s2 orbital, resulting in an asymmetric coordination geometry.…”

“…The hydrothermal method of obtaining metal iodates is mainly known in the literature. A large number of metal iodates were discovered, such as LiIO 3 [1], α-La(IO 3 ) 3 , La(IO 3 ) 3 (H 2 O), La(IO 3 ) 3 (HIO 3 ), Ln(IO 3 ) 3 (HIO 3 ) y (Ln = La, Pr, Nd, Sm, Eu, Ce, y = 1 or 1.33) [4,5], Bi 2 (IO 4 )(IO 3 ) 3 [6], M(IO 3 ) 2 (HIO 3 ) (M = Ca, Sr) [7], KIO 3 (HIO 3 ) [8], α and β-Rb(IO 3 )(HIO 3 ) [9], Al(H 2 O) 6 (IO 3 ) 3 (HIO 3 ) [9] and Be(IO 3 ) 2 (HIO 3 ) 2 (6H 2 O) [10]. Metal iodates reveal the diversity of structures, which may be attributed to variable intermolecular interactions between I and O atoms.…”

“…Among these, only the hexagonal modification of lithium iodate (α-LiIO 3 ) crystal demonstrates nonlinear optical, pyroelectric, piezoelectric, ferroelectric, and acousto-optic properties. This crystal is used in optoelectronic and quantum electronic devices and other technologies [1][2][3]. Along with the development of technologies, there is an increasing demand for crystals and subsequently higher requirements for their properties.…”

Determination of energy band gap of α-LiIO3 doped with L-Arginine and L-Nitroarginine amino acids using diffuse reflectance spectroscopy

“…In recent years, large-scale work was performed to enhance the properties of applied crystals (lithium iodate, lithium niobate, triglycine acetate, triglicine sulfate (TGS)) using various substances as dopants [3][4][5][6][7][8][9][10][11]. In this work, the 𝛼-LiIO 3 crystal is chosen as the object of the study because 𝛼-LiIO 3 has exhibited piezoelectric, nonlinear, ferroelectric and pyroelectric properties and has been applied in optoelectronic and quantum electronic devices [12][13][14]. Despite extensive research on the 𝛼-LiIO 3 crystal, studies on its bandgap have remained theoretical until now [15].…”