来源：ACS PublicationsRare-earth-ion-doped disordered crystals are an effective route to spectral broadening. In this study, high-quality Nd:Lu(x)Y(3-x)Ga5O12 composite laser crystals were grown using the Czochralski method. The crystal dimensions were Ø30 × 90 mm2, and the structure of the Nd:LuYGG crystal was characterized using X-ray diffraction (XRD), XRC, scanning electron microscope (SEM), and ICP-MS. Raman spectroscopy was performed to identify vibrational modes, with the maximum phonon energy determined to be 762.1 cm–1. Absorption, fluorescence spectra, and fluorescence lifetim...
Release time:
2026
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06
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Effect of Charge Compensation in the Structure, Energetics, and Dopant Distribution in Rare-Earth Element-Doped Zircon Revealed from First-Principles Calculation 来源：ACS PublicationsThe energetics of rare-earth element (REE)-substituted zircon (ZrSiO4) is investigated by combining classical molecular static and density functional theory (DFT)-based calculations. Two charge balancing mechanisms, (1) 2ZrZr× → 2REEZr′ + VO•• and (2) ZrZr ×+ SiSi×→ REEZr′ + PSi• (REE = La, Gd, and Yb), are considered. Substitutions of REE3+ increase the overall unit cell volume of zircon proportional...
Release time:
2026
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来源：ACS PublicationsTo enhance the corrosion resistance of epoxy coatings, a three-dimensional (3D) network-like europium–nickel-co-doped zinc oxide (Eu–Ni–ZnO) was synthesized via a combustion method. The unique 3D network structure physically blocks corrosive medium penetration by creating a tortuous diffusion pathway. Electronic coupling between Eu3+ 4f and Ni2+ 3d orbitals forms “charge carrier traps” that promote charge carrier separation. Oxygen vacancies further capture electrons from anodic dissolution to suppress cathodic reduction. Additionally, Ni3+ provides a strong oxidizing capabi...
Release time:
2026
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Highly Water-Dispersible Upconverting GdPO4Er3+Yb3+ Nanophosphors for Optical, Magnetic, Magnetic Hyperthermia, Anticounterfeit, and In Vitro and Ex-Vivo Multimodal Applications来源：ACS PublicationsHighly water-dispersible Er3+/Yb3+-activated GdPO4 nanophosphors were synthesized via a polyol-mediated coprecipitation route. In situ X-ray diffraction reveals a thermally induced phase transformation from hexagonal to monoclinic symmetry upon annealing between 50 and 900 °C, accompanied by a morphology evolution from nanorods to dumbbell-like structures as confirmed by HRTEM (high resolution tr...
Release time:
2026
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