Crystal growth and spectral properties of pure and Co2+-doped Mg3B2O6 crystal

Wang, Hongyan; Jia, Guohua; Wang, Yan; You, Zhenyu; Li, Jianfu; Zhu, Zhaojie; Yang, Fugui; Wei, Yanping

doi:10.1016/j.optmat.2006.08.007

Cited by 13 publications

(17 citation statements)

References 12 publications

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“…In reaction (2), the product formed was a white gel-like solid Mg(OH) 2 , which showed an irregular flakelet structure in the SEM image. As the temperature increased to 320°C, Mg(OH) 2 reacted with BO 2 H to produce MgBO 2 (OH), as indicated in reaction (3). In this process, the irregular flakelet disappeared, and short columnar-like particles were observed.…”

Section: Resultsmentioning

confidence: 88%

“…2 Recently, Co 2+ -doped Mg 3 B 2 O 6 crystal grown by the Czochralski technique has been proposed to be a promising candidate for tunable laser applications and solidstate devices operating in visible-infrared spectral regions. 3 In the past few decades, one-dimensional nanostructured materials have been intensively investigated owing to their fascinating and unique chemical and physical properties as compared to their bulk counterparts. 4,5 Several nanostructured forms of magnesium borate have been obtained, such as nanowires/nanorods, nanotubes, and nanobelts.…”

Section: Introductionmentioning

confidence: 99%

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New Synthetic Route and Characterization of Magnesium Borate Nanorods

Zhang

et al. 2008

Crystal Growth & Design

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In the current research, we have successfully fabricated single-crystalline triclinic Mg 2 B 2 O 5 and orthorhombic Mg 3 B 2 O 6 nanorods by a solvothermal method under supercritical conditions. Detailed microstructures of as-synthesized products were characterized by X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy, and X-ray photoelectron spectroscopy. It was found that the morphology and phase of the products were strongly dependent on the reaction conditions, such as the ratio of Mg/B, temperature, reaction time, and solvent media. The formation process of Mg 2 B 2 O 5 nanorods was illustrated based on SEM observations of the different reaction stages. This technique may also have great potential in realizing other nanostructured materials.

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

New Synthetic Route and Characterization of Magnesium Borate Nanorods

Zhang

et al. 2008

Crystal Growth & Design

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“…MgO with stoichiometric amount of H 3 The specific surface area was calculated using the following equation: S ¼ 6 dt where d is the density, t is the crystallite size.…”

Section: M1mentioning

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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“…In the past decades, synthesis of magnesium borates are of considerable interest because of their many potential applications in different fields including thermo-luminescence applications, and luminescent material for cathode ray tube screens. [1][2][3][4][5][6][7][8][9][10] Mg 3 (BO 3 ) 2 , kotoite, that was discovered by Watanabe (1939), is an uncommon mineral, which included 62.78% of MgO and 35.20% of B 2 O 5 . This mineral typically formed in the contact zone of magnesium-rich skarn borate deposites.…”

Section: Introductionmentioning

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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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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Crystal growth and spectral properties of pure and Co2+-doped Mg3B2O6 crystal

Cited by 13 publications

References 12 publications

New Synthetic Route and Characterization of Magnesium Borate Nanorods

New Synthetic Route and Characterization of Magnesium Borate Nanorods

Effect of magnesium source on the fabrication of kotoite Mg₃B₂O₆ ceramic

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

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Crystal growth and spectral properties of pure and Co2+-doped Mg3B2O6 crystal

Cited by 13 publications

References 12 publications

New Synthetic Route and Characterization of Magnesium Borate Nanorods

New Synthetic Route and Characterization of Magnesium Borate Nanorods

Effect of magnesium source on the fabrication of kotoite Mg3B2O6 ceramic

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

Contact Info

Product

Resources

About

Effect of magnesium source on the fabrication of kotoite Mg₃B₂O₆ ceramic

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