101 results match your criteria: "Beijing Center for Crystal Research and Development[Affiliation]"
Inorg Chem
November 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Noncentrosymmetry (NCS) is essential for a second-harmonic nonlinear-optical (NLO) crystal; however, the tailored synthesis of NCS materials has historically posed significant challenges because the adjacent dipole moments of constituted NLO-active units in the structure tend to align in opposite directions, resulting in the NLO effect being canceled as in a centrosymmetric (CS) crystal. In this work, we propose a polar-layer-driven strategy, wherein a polarization-layered framework is constructed to constrain the dipole moment to align in the same direction, thereby facilitating the formation of the NCS structure. Taking the layered structure CS KZnVO as a prototype compound, a novel vandate KZnVOBr (KZVB) was rationally synthesized via a multiple sites-oriented cosubstition method.
View Article and Find Full Text PDFInorg Chem
November 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, China.
Inorg Chem
October 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Long persistent luminescence (PersL) materials have revolutionized many fields of optoelectronics and photonics due to their applications in anticounterfeiting, information encryption, and in vivo bioimaging. Here, we reported a novel PersL crystal prepared by the heterovalent doping of Sb into perovskite tetragonal phase RbCdCl, comparing with the pristine non-perovskite orthorhombic phase analogue without PersL property. Surprisingly, under the UV light irradiation, the title crystals concurrently exhibit green ultralong PersL (>2400 s), high photoluminescence quantum yield (49.
View Article and Find Full Text PDFJ Fluoresc
September 2024
School of Optoelectronic and Information Technology, Zhongshan Torch Polytechnic, Zhongshan, 528436, China.
Oxide matrix red-emitting phosphors are deemed as excellent color converters for white light emitting diodes (WLEDs) and laser diodes (LDs). Manganese-doped MgAlO powder was synthesized by a solid-state reaction method at different sintering temperatures. Microstructure shows that grain size is mainly in the range of 0.
View Article and Find Full Text PDFInorg Chem
September 2024
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
A new quaternary Hg-based selenide KHgGeSe was successfully synthesized and characterized as an engaging infrared (IR) nonlinear optical (NLO) material, which crystallizes in the 2 space group of the noncentrosymmetric monoclinic crystal system. The crystal structure of KHgGeSe is characterized by the stacking of countless layers with K cations filling the interlayers. The UV-vis-NIR diffuse reflectance spectrum shows that KHgGeSe possesses an indirect band gap of 2.
View Article and Find Full Text PDFInorg Chem
August 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
A quaternary metal thioarsenate infrared (IR) nonlinear optical (NLO) compound NaSrAsS was successfully prepared by a high-temperature reaction method from stoichiometric agents. It crystallizes in the tetragonal 42 with the unit cell parameters = 10.0393(3) Å, = 6.
View Article and Find Full Text PDFInorg Chem
July 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Rare-earth ()-based frustrated magnets are fertile playgrounds for discovering exotic quantum phenomena and exploring adiabatic demagnetization refrigeration applications. Here, we report the synthesis, structure, and magnetic properties of a family of rare-earth cyanurates (CNO)(OH) ( = Gd-Lu) with an acentric space group 6̅2. Magnetic susceptibility χ() and isothermal magnetization () measurements manifest that (CNO)(OH) ( = Gd, Dy-Yb) compounds exhibit no magnetic ordering down to 2 K, while Tb(CNO)(OH) shows long-range magnetic ordering around 3.
View Article and Find Full Text PDFInorg Chem
June 2024
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Currently, oxychalcogenides with mixed-anion groups that integrate the property advantages of oxides (wide optical band gap) and chalcogenides [strong second harmonic generation (SHG) response] through chemical substitution engineering have attracted widespread interest and are considered to be important candidates for infrared (IR) nonlinear optical (NLO) materials. Herein, the first Hg-based oxychalcogenide SrHgGeOS with mixed anion [GeOS] units has been successfully synthesized through a spontaneous crystallization method, which exhibits a favorable balance between the strong SHG response (0.7 × AgGaS) and large optical band gap (2.
View Article and Find Full Text PDFInorg Chem
May 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Herein, a new centrosymmetric phase NaNbPO (referred to as CS-NaNbPO) was obtained by a molten salt method, which is a polymorph of niobium phosphate bronze NaNbPO. CS-NaNbPO displays high structural similarity to the noncentrosymmetric NaNbPO phase (referred to as NCS-NaNbPO): Distorted NbO octahedra are corner-coordinated to form ReO-type layers, which are further joined together by isolated PO tetrahedra. However, two polymorphous phases adopt different packings of structural units, resulting in distinct symmetries.
View Article and Find Full Text PDFInorg Chem
February 2024
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
A new noncentrosymmetric crystal Na(NbO)(PO) was successfully synthesized in the niobium phosphate system. Its structure characterizes isolated and highly distorted NbO octahedra joining with isolated PO groups to form a unit of a (NbPO) hexagonal star by sharing O atoms. In (NbPO) hexagonal stars, all Nb and P atoms are in a hexagonal star-like arrangement and all Na atoms are also in a hexagonal star-like arrangement, except for Na(3) and Na(10) atoms.
View Article and Find Full Text PDFInorg Chem
December 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Owing to the exterior self-trapped excitons (STEs) with adjustable fluorescence beams, low-dimensional ns-metal halides have recently received considerable attention in solid-state light-emitting applications. However, the photoluminescence (PL) mechanism in metal halides remains a major challenge in achieving high efficiency and controllable PL properties because the excited-state energy of ns conformational ions varies inhomogeneously with their coordination environments. Here, a novel zero-dimensional (0D) lead-free bismuth-based RbBiCl·0.
View Article and Find Full Text PDFChemistry
January 2024
Beijing Center for Crystal Research and Development Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing, 100190, China.
Magnetic refrigeration technology based on Gd-based paramagnets is expected to be applied to refrigeration in extremely low temperatures, thereby reducing the consumption of liquid helium. Here, we obtained a compound, Gd TeBO with high Gd concentration through element substitution. The Gd concentration in this compound is as high as 2.
View Article and Find Full Text PDFDalton Trans
November 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
An alkali rare-earth phosphate KRbSc(PO) was successfully obtained as a derivative of glaserite-type KNa(SO) by co-substitution of K(1)O → RbO, K(2)O → KO, NaO → ScO and SO → PO, while maintaining the original anionic framework. KRbSc(PO) exhibits a layered [Sc(PO)] framework built from ScO octahedra and PO tetrahedra, with K and Rb residing in the interlayers. Its isostructural lanthanide analogues KRbEr(PO) and KRbLu(PO), inspired by an elemental substitution strategy, were also prepared by a high-temperature solid state reaction.
View Article and Find Full Text PDFDalton Trans
October 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Much effort has been devoted to synthesizing nonlinear optical crystals with efficient second harmonic responses. Herein, a tantalum phosphate crystal NaTaPO with a moderate second harmonic response was obtained using self-fluxes of NaHPO and NaHPO. NaTaPO belongs to the c space group of monoclinic systems with cell parameters of = 8.
View Article and Find Full Text PDFDalton Trans
July 2023
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
A new complex rare earth borate KPbLuBO was prepared by the spontaneous crystallization method. KPbLuBO is crystallized in the chiral trigonal space group 32 with cell parameters = = 13.0893(3) Å, = 15.
View Article and Find Full Text PDFInorg Chem
July 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
A series of oxides with high rare earth contents, RETeBO (RE = La, Pr, Nd, Sm-Dy), were synthesized, and they all crystallize in the noncentrosymmetric space group 6 resembling that of a previously reported BiTeBO ( , , 14190-14193), which showed a very strong second harmonic generation (SHG) signal believed to come from all three structural units [BO], [TeO], and [BiO]. Surprisingly, compared with the isostructural compound BiTeBO, both theoretical calculations and powder SHG tests show that RETeBO has an abnormally small SHG effect (0.2 × KDP).
View Article and Find Full Text PDFInorg Chem
July 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Metal sulfides with diamond-like (DL) structures generally exhibit excellent mid-IR nonlinear-optical (NLO) properties. Here, CuGeS (CGS) as a member of the DL chalcogenides was synthesized by a high-temperature solid-state method, and the optical properties were carefully studied experimentally and theoretically. The results revealed that CGS has a large second harmonic generation (0.
View Article and Find Full Text PDFInorg Chem
July 2023
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Birefringent crystals are essential in the domains of linear and nonlinear optics that need light wave polarization control. Rare earth borate has become a popular study material for ultraviolet (UV) birefringence crystals due to its short cutoff edge in the UV area. RbBaScBO, a two-dimensional layered structure compound with the BO group, was effectively synthesized through spontaneous crystallization.
View Article and Find Full Text PDFInorg Chem
June 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Replacing alkali metals (K, Na atoms) by an alkaline-earth metal (Ba atom), α-BaSc(BO) (high-temperature phase) is successfully obtained by a molten salt method, taking BaKNaSc(BO) as the parent template. Although both of them exhibit similar layered structures composed of ScO and BO units, α-BaSc(BO) shows largely distorted ScO octahedra (Δ = 0.56) forced by the uniform tension of a larger space effect from BaO polyhedrons, rather than regular ScO octahedra like in BaKNaSc(BO).
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March 2023
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Rare earth borates, a subset of the essential nonlinear optical (NLO) materials, have sparked a significant amount of attention in recent years. In self-fluxing systems, two non-centrosymmetric scandium borates with classical BO groups, namely RbSrScBO (I) and RbCaScBO (II), were successfully discovered. Both I and II exhibit a short ultraviolet (UV) cutoff edge (<200 nm) and appropriate second-harmonic generation efficiency (∼0.
View Article and Find Full Text PDFInorg Chem
March 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
BaPbBe(BO)F (BPBBF), a previously unreported lead-containing beryllium borate fluoride, has been successfully grown through a high-temperature flux method. Its structure is solved by single-crystal X-ray diffraction (SC-XRD), and it is optically characterized via infrared, Raman, UV-vis-IR transmission, and polarizing spectra as well. SC-XRD data suggests that it can be indexed by a trigonal unit cell (space group 31) with lattice parameters = 4.
View Article and Find Full Text PDFMolecules
January 2023
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
The accurate evaluation of nonlinear optical (NLO) coefficient, the main parameter affecting light conversion efficiency, plays a crucial role in the development of NLO materials. The Kurtz-Perry powder technique can evaluate second-harmonic generation (SHG) intensity in pristine powder form, saving a significant amount of time and energy in the preliminary screening of materials. However, the Kurtz-Perry method has recently been subject to some controversy due to the limitations of the Kurtz-Perry theory and the oversimplified experimental operation.
View Article and Find Full Text PDFInorg Chem
February 2023
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Nonlinear optical (NLO) crystals, being the primary medium for laser wavelength conversion, are crucial in all-solid-state lasers. Borophosphates offer more structural varieties than pure borates and phosphates, and they have become popular as NLO crystal candidates. Through spontaneous crystallization, we acquired a noncentrosymmetric alkali metal borophosphate crystal material, KNaBPO (KNBPO).
View Article and Find Full Text PDFInorg Chem
December 2022
Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
In this paper, a revised structure determination of an already known compound CsNbOBO with new structural insights was performed and the detailed characterization of its optical properties was reported for the first time. CsNbOBO was synthesized by spontaneous crystallization. It crystallizes in the 2 space group, and the unit lattice parameters are = 7.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2023
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Nonlinear optical (NLO) crystal, which simultaneously exhibits strong second-harmonic-generation (SHG) response and desired optical anisotropy, is a core optical material accessible to the modern optoelectronics. Accompanied by strong SHG effect in a NLO crystal, a contradictory problem of overlarge birefringence is ignored, leading to low frequency doubling efficiency and poor beam quality. Herein, a series of rare earth cyanurates RE (C N O )(OH) (RE=Y, Yb, Lu) were successfully characterized by 3D electron diffraction technique.
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