Synthesis, crystal structure, spectrum properties, and electronic structure of a novel non-centrosymmetric borate, BiCd3(AlO)3(BO3)4

Chen, Xuean; Yin, Hui; Chang, Xinan; Zang, Hegui; Xiao, Weiqiang

doi:10.1016/j.jssc.2010.09.030

Cited by 23 publications

(10 citation statements)

References 44 publications

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“…The vibrational bands observed between 1200 and 1600 cm −1 are assigned as the first region which is corresponding to the asymmetric stretching relaxation of the B–O bond of trigonal BO 3 units. The second region is located between 800 and 1200 cm −1 and is due to the B–O bond stretching of tetrahedral BO 4 units and the last band around 700 cm −1 is due to the bending of B–O–B linkages in the borate network . The structure of the B 2 O 5 group consists of two nonidentical BO 3 triangles with one common oxygen atom.…”

Section: Resultsmentioning

confidence: 98%

“…The second region is located between 800 and 1200 cm À1 and is due to the B-O bond stretching of tetrahedral BO 4 units and the last band around 700 cm À1 is due to the bending of B-O-B linkages in the borate network. [46][47][48][49][50] The structure of the B 2 O 5 group consists of two nonidentical BO 3 triangles with one common oxygen atom. For this reason, the infrared spectrum of Mg 2 B 2 O 5 can be interpreted on the basis of these two, nonÀidentical joined triangles.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, structural characterization, and photoluminescence properties of Eu³⁺‐doped Mg_3‐_xEu_x(BO₃)₂ phosphor

Morkan¹,

Gül²

2018

Int J Applied Ceramic Tech

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Eu3+‐doped Mg3‐xEux(BO3)2 (x = 0.000, 0.005, 0.010, 0.020, 0.050, and 0.100) phosphors were synthesized for the first time by solution combustion synthesis method, which is a fast synthesis method for obtaining nano‐sized borate powders. The optimization of the synthesis conditions of phosphor materials was performed by TG/DTA method. These phosphors were characterized by XRD, FTIR, SEM‐EDX, and photoluminescence, PL analysis. The XRD analysis exhibited that all of the prepared ceramic compounds have been crystallized in orthorhombic structure with space group Pnnm. Also, the influence of europium dopant ions on unit cell parameters of host material was analyzed using Jana2006 program and the crystalline size was determined by Debye‐Scherrer's formula. The luminescence properties of all Eu3+‐doped samples were investigated by excitation and emission spectra. The excitation spectra of Mg3‐xEux(BO3)2 phosphors show characteristic peak at 420 nm in addition to other characteristic peaks of Eu3+ under emission at 613 nm. The emission spectra of Eu3+‐doped samples indicated most intensive red emission band dominated at 630 nm belonging to 5D0→7F2 magnetic dipole transition. Furthermore, the optimum or quenching concentration of Eu3+ ion has been determined as x = 0.010 showed the maximum emission intensity when it was excited at 394 nm.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Synthesis, structural characterization, and photoluminescence properties of Eu³⁺‐doped Mg_3‐_xEu_x(BO₃)₂ phosphor

Morkan¹,

Gül²

2018

Int J Applied Ceramic Tech

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“…The bands detected between 1200 and 1600 cm À1 are corresponding to the first region which is due to asymmetric stretching relaxation of the B-O bonds of trigonal BO 3 units. The second region is located between 800 and 1200 cm À1 , and is due to the B-O bond stretching of tetrahedral BO 4 units and the last band at around 700 cm À1 is due to the bending [26][27][28][29][30] On the other hand, the structure of the B 2 O 5 group consists of two nonidentical BO 3 triangles with one common oxygen atom. For this reason, the infrared spectrum of Mg 2 B 2 O 5 can be interpreted on the basis of these two nonÀidentical joined triangles.…”

Section: Resultsmentioning

confidence: 99%

Effect of magnesium source on the fabrication of kotoite Mg₃B₂O₆ ceramic

Morkan

Gül

Morkan

et al. 2018

Int J Applied Ceramic Tech

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The effect of magnesium source on the fabrication of kotoite, Mg3B2O6, ceramic has been investigated by high temperature solid‐state reaction route based on the calcination of different magnesium sources, containing magnesium oxide, magnesium carbonate, magnesium sulfate, and magnesium nitrate with boric acid. The X‐ray powder diffraction results showed that single‐phase kotoite, Mg3B2O6, was synthesized using MgNO3.6H2O and 5 wt.% excess of H3BO3 powders as starting materials at 900°C for 48 hours. Mg3B2O6 obtained, is well crystallized, in orhorhombic crystal structure with lattice parameters of a = 5.399(9), b = 8.424(6), and c = 4.506(5) Å. Jana2006 refinement of this product shows excellent fit of the experimental data with software data, GOF= 1.33. The crystallite size of the product was calculated as 40.50 nm using Debye‐Scherrer's equation. The existence of BO3 triangles were detected by FTIR measurements of Mg3B2O6. The thermal properties were studied in the temperature range of 20°C to 1400°C by TG/DTA. The results showed that thermal stability of Mg3B2O6 is detected about 1380°C. Scanning electron microscopy was employed for observation of microstructure. The microstucture of obtained ceramic samples strongly depended on the magnesium source on the fabrication of Mg3B2O6 ceramic.

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“…Note that tetrahedral, trigonal bipyramidal, and octahedral oxygen coordination geometries have been previously reported for the Al atoms in the aluminium oxides. Among them, AlO 5 trigonal bipyramids are rare, but have been found in the structure of SrO (Al 2 O 3 ) 6 [28], while AlO 4 tetrahedra and AlO 6 octahedra are more popular: the former have been encountered in BaAl 2 B 2 O 7 [8] as well as K 3 AlB 8 O 15 [29] and the latter observed in AlBO 3 [30], TmAl 3 (BO 3 ) 4 [31], and BiCd 3 (AlO) 3 (BO 3 ) 4 [32]. The Al atom is located on a crystallographic 3 axis, thereby giving a single Al-O bond distance of 1.895(3) Å , which is comparable to those found in AlBO 3 (average Al-O = 1.923 Å ) and TmAl 3 (BO 3 ) 4 (average Al-O = 1.901 Å ), where AlO 6 groups have also been observed [30,31].…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Crystal Structure, and Spectrum Properties of a New Quaternary Borate NaSr7AlB18O36 with the Cyclic B18O36 18− Group, Notation of 6 × (3[2Δ + 1T])

Chen

Chang

et al. 2014

J Chem Crystallogr

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A new sodium strontium aluminoborate, NaSr 7 AlB 18 O 36 , has been synthesized by high-temperature solution reaction at 860°C. Its crystal structure was established by single-crystal X-ray diffraction technique: the space group R " 3c (No. 167), cell parameters a = 11.356(2) Å , c = 36.655 (7) Å , V = 4093.7(12) Å 3 , and Z = 6. It is isostructural with Sr 8 MgB 18 O 36 and the crystal structure consists of the cyclic B 18 O 36 18-building unit of corner-sharing twelve BO 3 triangles and six BO 4 tetrahedra. Each B 18 O 36 18-group is bonded to six octahedrally coordinated Al 3? centers via Al-O bonds to generate a 3D 3 1 [Al(B 18 O 36 )] 15-framework that has intersecting open channels occupied by Sr 2? /Na ? cations.The IR spectrum has further confirmed that the compound contains low symmetric BO 3 and BO 4 groups; UV-Vis diffuse reflectance spectrum revealed an optical band gap of about 3.65 eV; while solid-state fluorescence spectrum exhibited a broad emission band with the emitted main peak localized at about 533.3 nm and shoulder at 420 nm upon excitation by laser of 325 nm.

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Synthesis, crystal structure, spectrum properties, and electronic structure of a novel non-centrosymmetric borate, BiCd3(AlO)3(BO3)4

Cited by 23 publications

References 44 publications

Synthesis, structural characterization, and photoluminescence properties of Eu³⁺‐doped Mg_3‐_xEu_x(BO₃)₂ phosphor

Synthesis, structural characterization, and photoluminescence properties of Eu³⁺‐doped Mg_3‐_xEu_x(BO₃)₂ phosphor

Effect of magnesium source on the fabrication of kotoite Mg₃B₂O₆ ceramic

Synthesis, Crystal Structure, and Spectrum Properties of a New Quaternary Borate NaSr7AlB18O36 with the Cyclic B18O36 18− Group, Notation of 6 × (3[2Δ + 1T])

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Synthesis, crystal structure, spectrum properties, and electronic structure of a novel non-centrosymmetric borate, BiCd3(AlO)3(BO3)4

Cited by 23 publications

References 44 publications

Synthesis, structural characterization, and photoluminescence properties of Eu3+‐doped Mg3‐xEux(BO3)2 phosphor

Synthesis, structural characterization, and photoluminescence properties of Eu3+‐doped Mg3‐xEux(BO3)2 phosphor

Effect of magnesium source on the fabrication of kotoite Mg3B2O6 ceramic

Synthesis, Crystal Structure, and Spectrum Properties of a New Quaternary Borate NaSr7AlB18O36 with the Cyclic B18O36 18− Group, Notation of 6 × (3[2Δ + 1T])

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Synthesis, structural characterization, and photoluminescence properties of Eu³⁺‐doped Mg_3‐_xEu_x(BO₃)₂ phosphor

Synthesis, structural characterization, and photoluminescence properties of Eu³⁺‐doped Mg_3‐_xEu_x(BO₃)₂ phosphor

Effect of magnesium source on the fabrication of kotoite Mg₃B₂O₆ ceramic