Trivalent dysprosium ion-doped fluoro tantalum barium borophosphate glass composition, comprises diboron trioxide, phosphorus pentoxide, titanium dioxide, strontium carbonate, barium fluoride, tantalum oxide, dysprosium oxide, and lithium carbonate, synthesized via melt-quenching technique
	PANJANATHAN V; SANKAR J I
	2024-12-18
专利权人	SAVEETHA ENG COLLEGE (SAVE-Non-standard)
申请日期	2024-12-18
专利号	IN202441100331-A
成果简介	NOVELTY - Trivalent dysprosium ion (Dy3+)-doped fluoro tantalum barium borophosphate glass composition, comprises 40 wt.% diboron trioxide (B2O3), 30 wt.% phosphorus pentoxide (P2O5), 5 wt.% titanium dioxide (TiO2), 10 wt.% strontium carbonate (SrCO3), 4 wt.% barium fluoride (BaF2), 5 wt.% tantalum oxide (Ta2O3), 1 wt.% dysprosium oxide (Dy2O3), and 5 wt.% lithium carbonate (Li2CO3), synthesized via melt-quenching technique. USE - Trivalent dysprosium ion-doped fluoro tantalum barium borophosphate glass composition used in sensing and magnetic devices. ADVANTAGE - The trivalent dysprosium ion (Dy3+)-doped fluoro tantalum barium borophosphate glass composition exhibit enhanced structural, optical, photoluminescent, magnetic, and gamma radiation shielding properties, where structural properties are confirmed by X-ray diffraction (XRD) analysis, revealing its amorphous nature and the presence of borate tetrahedra (BO4), phosphate units (PCL), and metal-oxygen bonds as analyzed through Fourier Transform Infrared (FTIR) and Raman spectroscopy; optical properties are characterized by a wide optical band gap, extinction coefficient, refractive index, and optical conductivity, determined through ultraviolet (UV)-Visible spectroscopy; and photoluminescent properties of Dy3+ions are analyzed through photoluminescence (PL) spectroscopy, showing strong emission bands in the visible region corresponding to blue (2H9/2→ 6H15/2) and yellow ('F9/2→ 6H13/2) transitions, with CIE chromaticity coordinates confirming color purity and applicability in solid-state lighting. The Dy3+ions exhibit paramagnetic behavior, as demonstrated by Electron Spin Resonance (ESR) spectroscopy, providing insights into the electronic spin state and g-factor of the doped ions. The composition enhances gamma radiation shielding efficiency idue to the presence of high-atomic-number components, Ta2O3and BaF2, as confirmed by parameters such as mass attenuation coefficient, half-value layer (HVL), mean free path (MFP), and tenth value layer (TVL) calculated using Phy-X software, and provides an environmentally friendly, lead-free alternative for radiation shielding applications, with additional multifunctional capabilities for use in optoelectronics, solid-state lighting, photonic devices, and magnetic sensors. The inclusion of SrCO3and Li2CO3optimizes the mechanical strength, thermal stability, and structural durability of the glass material. The borophosphate glasses doped with tantalum and barium provide a unique combination of high-density structure, good optical transparency, and robust mechanical properties, making them suitable used in radiation protection applications. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method of synthesizing the Dy3+-doped fluoro tantalum barium borophosphate glass composition, which involves: (1) mixing raw materials comprising boric oxide (B2O3), phosphoric oxide (PzOs), titanium dioxide (TiOz), strontium carbonate (SrCCb), barium fluoride (BaFz), tantalum oxide (Ta2O3), dysprosium oxide (Dy2O3), and lithium carbonate (Li2CO3) in appropriate weight percentages; (2) melting the mixture at a temperature between 1100℃ and 1350℃ to obtain a homogenous molten state; (3) quenching the molten mixture by rapid cooling to form the amorphous glass; (4) annealing the glass at a temperature below its glass transition temperature to relieve internal stresses and ensure structural stability.
IPC 分类号	C09K-011/70 ; C23C-014/35 ; G01N-021/35 ; G01N-021/3563 ; G01N-033/28
国家	印度
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/13978
专题	中国科学院新疆生态与地理研究所
作者单位	SAVEETHA ENG COLLEGE (SAVE-Non-standard)
推荐引用方式 GB/T 7714	PANJANATHAN V,SANKAR J I. Trivalent dysprosium ion-doped fluoro tantalum barium borophosphate glass composition, comprises diboron trioxide, phosphorus pentoxide, titanium dioxide, strontium carbonate, barium fluoride, tantalum oxide, dysprosium oxide, and lithium carbonate, synthesized via melt-quenching technique. IN202441100331-A[P]. 2024.

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