Recent advances on second-order NLO materials based on metal iodates

Hu, Chun‐Li; Mao, Jiang‐Gao

doi:10.1016/j.ccr.2015.01.005

Cited by 299 publications

(158 citation statements)

References 139 publications

(234 reference statements)

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“…This and the consistency of DFT calculations further support the crystal structure here reported. In terms of functional properties, it is worth mentioning that the new polymorph of LiZn(IO 3 ) 3 crystallized in a polar space group (P2 1 ) and is therefore a potential material for SHG with similar functionalities as LiIO 3 and Zn(IO 3 ) 2 [47]. The P2 1 space group belongs to class 2 for which eight (respectively 4) nonzero SHG coefficients are to be considered without (respectively with) Kleinman's symmetry.…”

Section: Crystal Structurementioning

confidence: 99%

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

et al. 2019

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Synthesis and characterization of anhydrous LiZn(IO3)3 powders prepared from an aqueous solution are reported. Morphological and compositional analyses were carried out by using scanning electron microscopy and energy-dispersive X-ray measurements. The synthesized powders exhibited a needle-like morphology after annealing at 400 °C. A crystal structure for the synthesized compound was proposed from powder X-ray diffraction and density-functional theory calculations. Rietveld refinements led to a monoclinic structure, which can be described with space group P21, number 4, and unit-cell parameters a = 21.874(9) Å, b = 5.171(2) Å, c = 5.433(2) Å, and  = 120.93(4)°. Density-functional theory calculations supported the same crystal structure. Infrared spectra were also collected, and the vibrations associated with the different modes were discussed. The non-centrosymmetric space group determined for this new polymorph of LiZn(IO3)3, the characteristics of its infrared absorption spectrum, and the observed second-harmonic generation suggest it is a promising infrared non-linear optical material.

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Section: Crystal Structurementioning

confidence: 99%

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

et al. 2019

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“…[7][8][9] Metal iodates currently attract extensive research interest due to their potential outstanding SHG response. [10] Up to now,several effective synthetic routes have been reported for exploring the NCS metal iodates featuring novel crystal structures and remarkable SHG performance,s uch as condensing IO 3 À and IO 4 3À units to form polyiodates, [11][12][13] combining six-or five-coordinate d 0 transition metal (TM) cations (e.g.T i 4+ ,V 5+ ,M o 6+ ,a nd Nb 5+ ) [14][15][16][17][18][19][20][21][22] or metal cations (e.g. Bi 3+ and Pb 2+ ) [23][24][25][26] having as tereochemically active lone-pair (SCALP) with iodates,a nd introducing fluoride anions into iodates.…”

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confidence: 99%

A Facile Route to Nonlinear Optical Materials: Three‐Site Aliovalent Substitution Involving One Cation and Two Anions

et al. 2019

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Tw om ixed-metal gallium iodate fluorides,n amely, a-and b-Ba 2 [GaF 4 (IO 3 ) 2 ](IO 3 )(1 and 2), have been designed by the aliovalent substitutions of a-a nd b-Ba 2 [VO 2 F 2 (IO 3 ) 2 ]-(IO 3 )( 3 and 4)i nvolving one cationic and two anionic sites. Both 1 and 2 display large second-harmonic generation responses ( % 6 KH 2 PO 4 (KDP)), large energy band gaps (4.61 and 4.35 eV), wide transmittance ranges ( % 0.27-12.5 mm), and high relevant laser-induced damage thresholds (29.7 and 28.3 AgGaS 2 ,r espectively), whichi ndicates that 1 and 2 are potential second-order nonlinear optical materials in the ultraviolet to mid-infrared. Our studies propose that three-site aliovalent substitution is af acile route for the discovery of good NLO materials.Noncentrosymmetric (NCS) oxide materials have extensively excited academic interest owing to their probable properties with applications in second-order nonlinear optics (NLO) as well as in pyroelectrics,f erroelectrics,a nd piezoelectrics. [1][2][3][4][5][6] To the best of our knowledge,a ne xcellent second-order NLO material should feature al arge second harmonic generation (SHG) coefficient, ahigh relevant laserinduced damage threshold (LDT), appropriate optical transmittance range,m oderate birefringence for achieving phase matching,and good thermal stability.Inaddition, it should be free of moisture and accessible by af acile synthetic method. [7][8][9] Metal iodates currently attract extensive research interest due to their potential outstanding SHG response. [10] Up to now,several effective synthetic routes have been reported for exploring the NCS metal iodates featuring novel crystal structures and remarkable SHG performance,s uch as condensing IO 3 À and IO 4 3À units to form polyiodates, [11][12][13] combining six-or five-coordinate d 0 transition metal (TM) cations (e.g.T i 4+ ,V 5+ ,M o 6+ ,a nd Nb 5+ ) [14][15][16][17][18][19][20][21][22] or metal cations (e.g. Bi 3+ and Pb 2+ ) [23][24][25][26] having as tereochemically active lone-pair (SCALP) with iodates,a nd introducing fluoride anions into iodates. [27][28][29][30][31][32] Anumber of excellent SHG materials have been discovered, for instance,NaI 3 O 8 , [11] Cs 2 I 4 O 11 , [13] Li 2 M(IO 3 ) 6 (M = Ti 4+ ,Sn 4+ ,Ge 4+ ), [33][34][35] A(VO) 2 O 2 (IO 3 ) 3 (A = K, Rb,C s, NH 4 ), [15,20] AMoO 3 IO 3 (A = Rb,C s), [14] BaNbO-(IO 3 ) 5 , [17] BiOIO 3 , [23] PbPt(IO 3 ) 6 , [25] Bi(IO 3 )F 2 , [28] and KBi 2 -(IO 3 ) 2 F 5 , [30] which can produce very strong SHG effects (> 10 KH 2 PO 4 (KDP)).Recently,anumber of new NCS crystals were obtained by the aliovalent substitution of known parent compounds to produce materials with strong SHG response. [36][37][38][39][40][41] For example,S e IV O 3 2À has typically been used as as urrogate for I V O 3 À ,w ith substitution of the oxo anion by ah alide anion (usually fluoride anion) to maintain charge balance.T he first bismuth selenite fluoride,B iFSeO 3 ,w ith the strongest SHG performance of all metal selenites,was designed by aliovalent substitution of laye...

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“…Recently, numerous famous NLO crystals have been discovered and have effectively solved the generation of UV-visible light [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. However, for the mid-far infrared (IR) region (3-20 µm), outstanding IR NLO materials have been discovered less, and only a few (chalcopyrites AgGaS 2 , AgGaSe 2 , and ZnGeP 2 ) have been commercially applied [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A High Laser Damage Threshold and a Good Second-Harmonic Generation Response in a New Infrared NLO Material: LiSm3SiS7

Zhen

Nian

et al. 2016

Crystals

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A series of new infrared nonlinear optical (IR NLO) materials, LiRe 3 MS 7 (Re = Sm, Gd; M = Si, Ge), have been successfully synthesized in vacuum-sealed silica tubes via a high-temperature solid-state method. All of them crystallize in the non-centrosymmetric space group P6 3 of the hexagonal system. In their structures, LiS 6 octahedra connect with each other by sharing common faces to form infinite isolated one-dimensional ∞ [LiS 3 ] n chains along the 6 3 axis. ReS 8 polyhedra share edges and corners to construct a three-dimensional tunnel structure with ∞ [LiS 3 ] n chains located inside. Remarkably, LiSm 3 SiS 7 shows promising potential as one new IR NLO candidate, including a wide IR transparent region (0.44-21 µm), a high laser damage threshold (LDT) (3.7 × benchmark AgGaS 2 ), and a good NLO response (1.5 × AgGaS 2 ) at a particle size between 88 µm and 105 µm. Dipole-moment calculation was also used to analyze the origin of NLO responses for title compounds.

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Recent advances on second-order NLO materials based on metal iodates

Cited by 299 publications

References 139 publications

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

A Facile Route to Nonlinear Optical Materials: Three‐Site Aliovalent Substitution Involving One Cation and Two Anions

A High Laser Damage Threshold and a Good Second-Harmonic Generation Response in a New Infrared NLO Material: LiSm3SiS7

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