CERAMICS INTERNATIONAL
·
2026
·
IF 6
Zhenjun Qing,Yuexi Zheng,Haiyan Li
A series of Y 3+ -substituted NaSm 1-x Y x (MoO 4 ) 2 (x = 0.05–0.20) ceramics were synthesized via a conventional solid-state method. Y 3+ substitution significantly enhanced the microwave dielectric properties by modulating the crystal structure, microstructure, and chemical bond characteristics. Rietveld refinement confirmed that all samples adopted a single-phase tetragonal scheelite structure (space group I 4 1 /a). Lattice parameters decreased monotonically with increasing x, while the packing fraction increased from 60.80% to 61.00%, indicating lattice densification. All samples achieved relative densities exceeding 95.9%. Notably, Y 3+ doping simultaneously improved the quality factor and temperature stability: Q × f increased from 39,500 GHz to 52,400 GHz, while | τ f | decreased from 38.7 ppm/°C to 22.3 ppm/°C. The optimal properties were obtained at x = 0.20, with ε r = 12.4, Q × f = 52,400 GHz, and τ f = −22.3 ppm/°C. Raman analysis revealed a negative correlation between the FWHM of the ∼886 cm −1 mode and Q × f , confirming reduced lattice anharmonicity. P–V–L bond theory demonstrated that the enhanced ionicity, lattice energy, and bond energy of the Na/Sm/Y–O bonds contributed to the improved ε r , Q × f and | τ f |, respectively. The low sintering temperature of 900 °C makes this composition highly promising for LTCC substrate applications.
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JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Jing Li,Xiaojie Jin,Lijuan Wang,Xiaoqing Zhou,Long Qiu,Xiaowei Huang,Yongxiu Li
Nano ceria abrasive is a key material for ultra-precision chemical mechanical polishing (CMP) of advanced integrated circuits and optical components. Ion doping is an effective method to improve the surface Ce 3+ content and chemical polishing effect. In this study, Y 3+ doped CeO 2 nanoabrasives were prepared by regulating the crystallization process of rare earth (RE) carbonate precursor based on the morphology inheritance between the precursors and the calcined products. In order to reduce the crystallization rate of cerium carbonate, the crystallization inert region with NH 4 HCO 3 to Ce 3+ molar ratio of 6 and reaction temperature of 60 °C was selected for precipitation reaction, and Y 3+ , a heavy RE with a large ion radius difference from Ce 3+ , was introduced into the precipitation system. The crystallization rate of cerium carbonate decreases obviously when Y 3+ doping content reaches 8 mol%, and amorphous nanoscale cerium carbonates begin to form. Using them as precursors, Y 3+ doped CeO 2 nanoabrasives with doping content of 8 mol%–20 mol% were prepared by calcination, and their physicochemical properties and polishing performance on K9 glass were studied. The prepared Y 3+ doped CeO 2 nanoabrasives have quasi-spherical morphology and the size is (50±15) nm. With Y 3+ doping amount increasing from 8 mol% to 20 mol%, the surface Ce 3+ concentration of the abrasive particles slightly increases from 20.0% to 21.7%, while the Young’s modulus decreases from 9.44 to 5.85 GPa. The sample with Y 3+ doping content of 10 mol% has the best performance in K9 polishing, with material removal rate of (234.0±4.0) nm/min and surface arithmetic mean height ( S a roughness) of (0.304±0.018) nm.
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NANO
·
2019
·
IF 1.293
Renxin Xu,Huan Yang,Huajun Sun,Jing Zhou,Zhijun Yue,Xinhua Gao
Mg 0 . 2 Mn 0 . 8 Y x Fe 2 − x O 4 ( x = 0 . 0 0 0 , 0.025, 0.050 and 0.075) nanocrystalline is synthesized via hydrothermal technique. Single cubic spinel phase is confirmed by XRD and the formation of Mg 0 . 2 Mn 0 . 8 Y x Fe 2 − x O 4 is verified by EDS. The average size of the nanoferrites is around 80 nm, which is examined by TEM image. Y 3 + substituted Mg-Mn nanoferrites exhibit low saturation magnetization ( M s ) and coercivity ( H c ) . Especially, the nanoferrites with x = 0 . 0 7 5 show the lowest M s and H c of 46.96 emu/g and 12.04 Oe, respectively. The ferrite composites present that the resistivity and the magnetic loss are less than 4 . 5 × 1 0 7 Ω ⋅ cm and 0.7 in the range of 2–18 GHz, respectively. The low coercivity and high resistivity indicate that the addition of Y 3 + contributes to the synthesis of the excellent soft magnetic materials.
研究领域:
材料科学
·
电磁学
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Li Lv,Junzhong Wang,Wei Wang,Limin Han
In this paper, Y 3+ ions doped CaMoO 4 :Eu 3+ with controlled microstructures were prepared via a hydrothermal method . All samples were fully characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), UV–vis diffuse reflectance spectroscopy, and photoluminescence measurement. The luminescent performance improvement aroused by doping was systematically investigated after inducing Y 3+ as co-doping ions in CaMoO 4 :Eu 3+ lattice. It is found that the lattice of Y 3+ doped CaMoO 4 :Eu 3+ nanocrystals contracted with increasing the Y 3+ concentration, resulting in a red shift of 1 A 1 → 1 T 1 transition from the valence band to the conduction band. Meanwhile, excitation band at 300 nm corresponding to the typical 1 A 1 → 1 T 1 transition also shifted to lower energy, originating from the charge-transfer between MoO 4 2− group and Eu 3+ ions. When the Y 3+ doping concentration was less than 0.05, the quantum efficiency of Y 3+ doped CaMoO 4 :Eu 3+ nanocrystals was all superior to pure CaMoO 4 :Eu 3+ nanocrystals, which can be assigned to the lattice structure contraction, co-doping effect, doping concentration variation. However, as the content of Y 3+ ions further increasing, Y 3+ ion should act as a luminescence killer, and therefore resulting in a nonradiative de-excitation.
研究领域:
材料科学
·
光学
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Xin Zhang,Jiayi Zhang
Ultra-thin copper foil is critical for high-density circuits and lithium-ion battery current collectors, yet surface roughness, brittleness, and inhomogeneous grains limit performance. This study demonstrates that rare-earth yttrium ions (Y 3+ ) in acidic copper sulfate electrolyte optimize microstructure and enhance properties of electrodeposited copper foil. At 0.6 mg/L Y 3+ , grain refinement (0.4–0.9 μm), intensified (220) plane (T C = 1.85), and minimized surface defects were achieved via adsorption-mediated growth inhibition. The optimized foil exhibited 63 % lower corrosion current density (0.47 μA/cm 2 ) and 3.5 times higher charge transfer resistance versus Y 3+ -free counterparts. Y 3+ suppresses dendritic growth while promoting preferential orientation, reconciling high strength, corrosion resistance, and interfacial stability. This work provides a novel rare-earth-based strategy for manufacturing high-performance copper foils in advanced electronics and energy storage.
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JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Yuwen Zeng,Yiyang Xv,Junwei Pan,Rongfei Wei,Xiangling Tian,Fangfang Hu,Hai Guo
The pursuit of broadband near-infrared (NIR) phosphors with superior luminescent efficiency and thermal stability is vital for next-generation NIR light sources. Leveraging a synergistic strategy of cation substitution and Cr 3+ content modulation, a series of Y 3- x Sc x Ga 3- y MgSiO 12 : y Cr 3+ phosphors were designed, exhibiting enhanced NIR emission covering 650–1000 nm, with a broadened full-width at half maximum and a controllable redshift in emission peak. Notably, the synthesized phosphor achieves an internal quantum efficiency of 66.9% and retains 79.5% of its initial emission intensity at 423 K. When integrated with a 450 nm blue light-emitting diode (LED) chip, the resulting NIR LED delivers a high photoelectric conversion efficiency of 9.87% at 10 mA and an output power of 48.58 mW at 300 mA. These results highlight the great potential of this phosphor for multifunctional NIR applications, including bio-imaging, night vision, and nondestructive testing.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Nana Xu,Jingyu Li,Danchi Zhou,Han Luo,Yuanbing Li
Silica nanofibers often suffer from structural collapse at elevated temperatures, limiting their high-temperature applications. To address this challenge, we develop a novel multiphase nanofibers system by incorporating yttrium silicate nanocrystals into an amorphous SiO 2 matrix. Through precise control of the SiO 2 /Y 2 O 3 molar ratio, optimized nanofibers are fabricated via electrospinning combined with a sol-gel process. Comprehensive characterization (XRD, SEM, XPS, BET and TEM) confirmed the formation of a homogeneous composite structure, with the 7:1 SiO 2 /Y 2 O 3 molar ratio exhibiting optimal performance. The resulting nanofibers demonstrate significantly enhanced thermal stability compared to pure SiO 2 fibers, maintaining structural integrity at temperatures up to 1300 °C. Furthermore, the composite nanofibers exhibit superior thermal insulation property, with a thermal conductivity of only 0.122 W·m -1 ·K -1 at 1000 °C. Flame exposure tests reveal exceptional heat resistance, with the backside temperature remaining below 67 °C despite direct 1300 °C flame impingement. This work provides a promising strategy for designing high-performance thermal insulation materials for extreme environments.
研究领域:
材料科学
·
纳米技术
·
热工学
·
无机化学
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Shengjie Jiang,Yong Lin He,Weiming Yang,Hongyu Guo,Fafu Yang
This paper reports the first fluorescent sensor that can simultaneously detect multiple rare earth metal ions (Y 3+ , Yb 3+ , Sc 3+ and Ce 3+ ) in a variety of rare earth metal ions. The Schiff base TPE-A was synthesized in 85% yield by the condensation reaction of formyltetrastyrene with 4-aminoantipyrine. Long wavelength fluorescence of TPE-A was observed at 500–650 nm in both MeOH and MeCN solutions. In methanol, it showed a highly selective response to Y 3+ with a fluorescence color change from red to yellow-green, while it exhibited fluorescence quenching for Yb 3+ . Additionally, it exhibited a selective sensing ability for Sc 3+ in MeCN solution with a fluorescence color change from red to yellow, and a fluorescence quenching effect for Ce 3+ . In addition, it can detect these four rare earth metal ions simultaneously by fluorescence changes with the assistance of EDTA-2Na. It can be used as a fluorescence sensor for MeOH (Y 3+ and Yb 3+ ) and MeCN (Sc 3+ and Ce 3+ ), respectively. The ICT effect of the TPE-A probe on Y 3+ was investigated using femtosecond transient absorption spectroscopy and quantum chemical calculations. The detection limits of Y 3+ , Yb 3+ , Sc 3+ and Ce 3+ were 1.6 × 10 −8 mol/L, 1.04 × 10 −7 mol/L, 8.35 × 10 −8 mol/L and 1.31 × 10 −8 mol/L, respectively, as deduced from Job's plots, spectral titrations, and ESI-MS. And the detection of measured water in MeCN was realized by TPE-A-Sc 3+ hybrid system. This implies an efficient and simple method for the simultaneous analysis of trace rare earth metal elements (Y 3+ , Yb 3+ , Sc 3+ and Ce 3+ ) in complex environments.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Tianmiao Sun,Ziheng Zhang,Rangrang Fan,Daobin Zhu,Yuanyuan Fan,Yongtao Liu,Yong Li,Junshan Hu
Yb 2 WO 6 : Er 3+ , Y 3+ phosphors were successfully synthesized using the high-temperature solid-state method. • Y 3+ doping significantly enhances the upconversion luminescence intensity of Yb 2 WO 6 : Er 3+ phosphor. • The red and green emission intensities are increased by 2.17 and 2.20 times. • The maximum of relative sensitivity and absolute sensitivity is 6.97%·K⁻¹ at 450 K and 1.90%·K −1 at 523 K, respectively. Er 3+ and Y 3+ ions co-doped Yb 2 WO 6 phosphors were synthesized via a high-temperature solid-state method. Under 980 nm excitation, the Y 3+ -substituted Yb 2 WO 6 :Er 3+ phosphors exhibit green emission near 545 nm and red emission near 657 nm, assigned to the Er 3+ 4 S 3/2 → 4 I 15/2 and 4 F 9/2 → 4 I 15/2 transitions, respectively. At the optimum Y 3+ content of x = 0.20, the red and green emission intensities are 2.17 and 2.20 times those of the Y 3+ -free sample, respectively. Yb 3+ ions act as the primary sensitizers by absorbing 980 nm photons and transferring energy to Er 3+ . Sequential Yb 3+ →Er 3+ energy-transfer steps, together with phonon-assisted relaxation among Er 3+ levels, populate the 4 S 3/2 and 4 F 9/2 emitting states. The enhanced upconversion emission and the measured temperature-dependent fluorescence-intensity ratio indicate that the phosphor is a potential candidate for non-contact optical thermometry over 298–523 K. S R reaches its maximum value of 6.97%·K −1 at 450 K. while S A attains its maximum of 1.90%·K −1 at 523 K. Download: Download high-res image (167KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Qiyuan Zhu,Yuhang Yang,Jiling Song,Jiqiang Wu,Jianbing Guo
Developing functional separators capable of simultaneously suppressing lithium dendrite growth and enabling compatibility with high-voltage cathodes is critical for realizing long-cycle-life lithium metal batteries. Herein, a synergistic bulk–interface regulation strategy is achieved via a coatable Y3+/Zn2+ codoped LATP/PVDF-HFP composite coating applied onto a commercial polypropylene (PP) separator. Y3+/Zn2+ codoped Li1.3Al0.275Y0.025Ti1.7(PO4)3 (LAYTP-Zn) is synthesized via a solid-state route and uniformly integrated with PVDF-HFP to form a conformal coating with strong interfacial adhesion. Y3+/Zn2+ incorporation induces lattice expansion of LATP, thereby broadening bulk Li+ transport pathways. In addition, Zn2+ regulates interfacial chemistry by enhancing electrolyte dissociation and anchoring anions through Lewis acid interactions, while also promoting the formation of polar β-phase PVDF-HFP, collectively increasing the Li+ transference number to 0.79. In addition, the polymer matrix serves as a physical barrier that mitigates direct interfacial side reactions. The coordinated regulation of bulk ion conduction and interfacial ion distribution enables a more uniform Li+ flux and facilitates the formation of a LiF-enriched and mechanically robust interphase, thereby suppressing dendrite nucleation and growth. As a result, Li||Li symmetric cells exhibit stable cycling for over 3000 h at 1 mA·cm–2 and 1 mAh·cm–2. Furthermore, Li||LFP and Li||NCM811 half-cells deliver capacity retentions of 91.2% after 800 cycles at 1 C and 95.1% after 200 cycles at 0.5 C, respectively, while maintaining stable operation up to 4.73 V. This work provides a scalable separator design that integrates bulk transport optimization with interfacial regulation, offering a practical pathway toward high-performance lithium metal batteries.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Zuodong Liu,Tingting Xiong,Chengwei Zhang,Qiyue Pan,Guo Zhang,Rui Liu,Yongsheng Yu,Peng Liu,Qiangshan Jing
A series of SrF 2 phosphors co-doped with Er 3+ and Y 3+ possessing regular polygon shapes were fabricated after calcination as-synthesized particles at 600 °C for 2 h. the crystal structure and morphology of the Er, Y:SrF 2 phosphors were identified. By incorporating the non-active Y 3+ ions as buffers into Er:SrF 2 phosphors, intense green up-conversion luminescence with modulating emission colors from reddish-yellow towards the greenish area is achieved. The two-photon up-conversion mechanism was also identified by the quadratic dependence between the luminescence intensities and 808 nm excitation source powers. The up-conversion luminescence characteristics indicate that Y 3+ buffers significantly enhance the 2 H 11/2 / 4 S 3/2 → 4 I 15/2 transitions, leading to an approximately five-fold increase in the luminescence intensities ratio R(g/r) of the green to red emissions in Er:SrF 2 phosphors.
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Nanomaterials
·
2024
·Vol. 14
·期 8
·696
·
IF 4.4
Lingyu Liu,Fengchen Zhou,Yuxiang Zhang,Yanhua Sun,Shixing Zhang,Kun Cai,Ruichong Qiu,Yi Lin,Wenjun Fa,Zihua Wang
A new sol-gel method that employs cation exchange from an aqueous metal ion solution with H+ions of granulated alginic acid was developed for synthesizing high-purity Y2O3nanoparticles. In this study, the cation exchange kinetics of H+~Y3+in aqueous solution were analyzed using on-line pH technology and off-line inductively coupled plasma-atomic emission spectrometry (ICP-AES) analysis. Pseudo 2nd-order models were utilized to evaluate the parameters of the kinetics, suggesting that the concentration of H+~Y3+involved in the cation exchange reaction was 1:1.733. Further, a comprehensive understanding of the Y-ALG calcination process was developed using thermo-gravimetric analysis, along with results obtained from differential scanning calorimetry (TGA/DSC). A detailed analysis of the XRD Rietveld refinement plots revealed that the crystallite sizes of Y2O3nanoparticles were about 4 nm (500 °C) and 15 nm (800 °C), respectively. Differential pulse voltammetry (DPV) was employed to investigate the electrochemical oxidation of catechol. The oxidation peak currents of catechol at Y2O3(500 °C)/GCE and Y2O3(800 °C)/GCE showed two stages linear function of concentration (2.0~20.0 × 10−6mol/L, 20.0~60.0 × 10−6mol/L). The results indicated that the detection limits were equal to 2.4 × 10−7mol/L (Y2O3(500 °C)/GCE) and 7.8 × 10−7mol/L (Y2O3(800 °C)/GCE). The study not only provided a method to synthesize metal oxide, but also proposed a promising on-line pH model to study cation exchange kinetics.
研究领域:
材料科学
·
化学工程
·
分析化学
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