Crystal Growth, Structure, and Diverse Magnetic Behaviors in Frustrated Triangular Lattice REBO3 (RE = Tb-Yb)

Triangular lattice (TL) materials are a rich playground for investigating exotic quantum spin states and related applications in quantum computing and quantum information. Millimeter-level single crystals of REBO3 (RE = Tb-Yb) with a nearly perfect RE-based TL have been successfully grown via a high-temperature flux method and structurally characterized via single-crystal X-ray diffraction. These 113-type materials crystallize in a monoclinic crystal system with a C2/c space group. Anisotropic magnetism and dominant antiferromagnetic interactions are found for the above materials based on DC magnetic susceptibility measurements. The comprehensive low-temperature specific heat data of REBO3 (RE = Tb-Tm) are characterized on single crystals for the first time, which exhibit diverse magnetic behaviors. Specifically, two weak-field-induced transitions could be found in the case of DyBO3 based on the specific heat measurements. Our results suggest that REBO3 (RE = Tb-Yb) is a TL magnetic system for investigating potential quantum magnetism.

White Light Emission and Enhanced Color Stability in a Single-Component Host

Eu³⁺ ion can be effectively sensitized by Ce³⁺ ion through an energy-transfer chain of Ce³⁺-(Tb³⁺) _n-Eu³⁺, which has contributed to the development of white light-emitting diodes (WLEDs) as it can favor more efficient red phosphors. However, simply serving for WLEDs as one of the multicomponents, the design of the Ce³⁺-(Tb³⁺) _n-Eu³⁺ energy transfer is undoubtedly underused. Theoretically, white light can be achieved with extra blue and green emissions released from Ce³⁺ and Tb³⁺. Herein, the design of the white light based on these three multicolor luminescence centers has been realized in GdBO₃. It is the first time that white light is generated via accurate controls on the Ce³⁺-(Tb³⁺) _n-Eu³⁺ energy transfer in such a widely studied host material. Because the thermal quenching rates of blue, green, and red emissions from Ce³⁺, Tb³⁺, and Eu³⁺, respectively, are well-matched in the host, this novel white light exhibits superior color stability and potential application prospect.

Tb3+- and Yb3+-doped novel KBaLu(MoO4)3 crystals with disordered chained structure showing down- and up-conversion luminescence

Tb³⁺/Yb³⁺ co-doped KBaLu(MoO₄)₃ with a highly disordered structure consisting of chains induces high color purity of primary green luminescence.

Dual-mode, tunable color, enhanced upconversion luminescence and magnetism of multifunctional BaGdF5:Ln3+ (Ln = Yb/Er/Eu) nanophosphors

BaGdF₅:Yb³⁺,Er³⁺/Eu³⁺ nanophosphors were prepared by a hydrothermal method, and the energy transfer, color-tunable dual-mode emissions and magnetic properties were studied, which could have promising applications in the fields of LEDs, MRI, biolabels, and so on.

A novel apatite, Lu5(SiO4)3N:(Ce,Tb), phosphor material: synthesis, structure and applications for NUV-LEDs

Crystal structure and luminescence properties of novel lutetium containing nitride–apatite Lu₅(SiO₄)₃N:Ce³⁺,Tb³⁺.