Ceramics International最新文献

{"title":"Analyses of Lorentz-type negative dielectric, optical and magnetic behaviours in Ba0.9La0.1TiO3/Cobalt ceramic","authors":"Arifur Rahman Bhuiyan ,&nbsp;Zahid Hasan ,&nbsp;Hasan Khaled Rouf ,&nbsp;Mohammad Khurshed Alam ,&nbsp;Md Razibul Hasan ,&nbsp;Mohammed Nazrul Islam Khan","doi":"10.1016/j.ceramint.2025.03.311","DOIUrl":"10.1016/j.ceramint.2025.03.311","url":null,"abstract":"<div><div>Perovskite samples of Ba_0.9La_0.1Ti_(1-x)Co_xO₃ [x = 0.0–0.10 in the step of 0.02] were synthesized using the solid-state reaction (SSR) method. The impact of cobalt (Co) contents (x) on the optical, magnetic, dielectric, and structural characteristics was thoroughly investigated. The X-ray diffractometer (XRD) analysis indicates a lower degree of tetragonal structure with sharp diffraction peaks, which turns the tetragonal phase to a cubic phase with Co contents. With the increase of Co concentration, the XRD peaks (dominant plane 101) shift toward smaller angles, suggesting an increase in unit cell volume and lattice size. The formation of the TiO₆ octahedron is verified using Fourier transformation infrared spectroscopy (FTIR) analysis, which reveals absorption bands at 518 cm⁻¹ and 356 cm⁻¹, indicating Ti–O stretching (υ₁) and bending vibrations (υ₂), respectively. The materials were analyzed for their morphological structure using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The UV–visible spectra reveal the presence of a prominent absorbance peak in the ultraviolet area, as well as a bandgap energy ranging from 3.09eV to 3.83eV, which varies depending on the doping concentrations. Magnetic measurement showed weak ferromagnetic behaviour of the samples at fixed temperatures of 5K and 300K; when x = 0, magnetic saturation of the samples occurs at both temperatures. However, when 'x' is increased, all the samples become saturated at higher temperatures but do not saturate at low temperatures. The measurements of dielectric constants indicate that at high frequencies, a negative dielectric constant of Lorentzian nature exists. The dielectric transition occurs along with insulator-conductor conversion in Ba_0.9La_0.1TiO₃/Cobalt ceramic. These findings open up scopes for utilizing this ferroelectric material in many applications, such as microwave filters, resonant cavities, electromagnetic wave absorption, and radio frequency devices.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26293-26308"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Densification and mechanical properties of high-entropy diboride ceramics sintered using Ni activation","authors":"Bin Li ,&nbsp;Jialin Sun ,&nbsp;Shurong Ning ,&nbsp;Xiao Li ,&nbsp;Jun Zhao","doi":"10.1016/j.ceramint.2025.03.217","DOIUrl":"10.1016/j.ceramint.2025.03.217","url":null,"abstract":"<div><div>High-entropy diboride ceramics (HEBs) represent a novel and promising category within the realm of ultra-high temperature ceramics (UHTCs). Due to their exceptional performance in extreme service conditions, HEBs have emerged as the preferred choice for thermal structural components and thermal protection systems. However, the robust nature of covalent bonding, coupled with a low self-diffusion coefficient, presents significant challenges for the densification of HEBs. In addition, the inferior fracture toughness of HEBs severely hinders their promotion in large-scale applications as thermal structures and thermal protection materials. Currently, research on HEBs both domestically and internationally is still insufficient. Therefore, there is an urgent need for in-depth studies aimed at improving the densification and fracture toughness of HEBs. In this study, dense (Hf_0.2Zr_0.2Ti_0.2Ta_0.2Cr_0.2)B₂ and (Hf_0.2Zr_0.2Ti_0.2Ta_0.2Mo_0.2)B₂ ceramics were successfully prepared with Ni metal as an additive. It was demonstrated that the incorporation of 10 wt% Ni led to an enhancement in the relative densities of the two HEBs, achieving values of 97.24 % and 96.83 %, respectively. This improvement is likely attributable to the development of a Ni-B based liquid phase during the sintering process, which facilitated the densification of the ceramic by effectively wetting the grain boundaries. The fracture toughness of the two materials also reached maximum values of 6.76 MPa m^1/2 and 6.43 MPa m^1/2 when the Ni addition was 10 wt%. This enhancement in fracture toughness is attributed to the pinning effect exerted by the dispersed Ni particles within the ceramic matrix, which inhibits crack propagation.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25332-25339"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The outstanding high-temperature oxidation resistance of SiC joint achieved via ultrafast high-temperature joining using FeCoCrNiCu high entropy alloy","authors":"Long Zhou,&nbsp;Chun Li,&nbsp;Chenghao Zhang,&nbsp;Xiaoqing Si,&nbsp;Junlei Qi,&nbsp;Jian Cao","doi":"10.1016/j.ceramint.2025.03.222","DOIUrl":"10.1016/j.ceramint.2025.03.222","url":null,"abstract":"<div><div>In this paper, the SiC ceramic was successfully joined using FeCoCrNiCu high entropy alloy via the ultrafast high-temperature joining. UHJ is a novel joining approach using electrically heated carbon felts for ultra-fast sample heating via conduction and radiation. The sample could be rapidly heated to 1430 °C in 0.5 s. The joints are mainly composed of metal silicide, Cr(s,s), Cu₅Si and amorphous carbon. The effects of preparation current and holding time on microstructure evolution and high-temperature mechanical properties of joints are investigated. C particle content increases with current and time. The samples prepared at 40 A-45 s exhibit the best mechanical properties. The maximum shear strengths of the joints at room temperature and 1000 °C were 54 MPa and 33 MPa, respectively. The oxidation resistance of the joints is systematically studied at the high temperature of 1000 °C for 10 h. C particles are oxidized to CO₂ during oxidation, leaving holes in the reactive layer that provide channels for oxygen infiltration. The Cr and Si elements in the brazing seam center diffuse towards high oxygen partial pressure. After oxidation, the typical microstructure of the joint turns out to be CrO₂+(NiCoFe)Si/Si-O compound/(NiFeCoCu)₂Si/Si-O compound/CrO₂+(NiCoFe)Si. The oxidized joint features an excellent shear strength of 47 MPa. The increase in strength of the oxidized joint is related to the compressive stress generated by the oxidation.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25379-25398"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The fabrication and insulation performance of TiO2 coating with reticulated porous structure for HTS magnet coils","authors":"Yao Wang ,&nbsp;Yamin Li ,&nbsp;Bing Xu ,&nbsp;Jiaying Ren ,&nbsp;Kangkang Wang ,&nbsp;Liang Zhang ,&nbsp;Zhixian He ,&nbsp;Wen Zhang ,&nbsp;Shengnan Zhang","doi":"10.1016/j.ceramint.2025.03.214","DOIUrl":"10.1016/j.ceramint.2025.03.214","url":null,"abstract":"<div><div>Titanium dioxide (TiO₂) ceramic coating, characterized by high thermal conductivity and remarkable chemical stability, leading to extensive application in providing electrical insulation within superconducting coils. However, the development of such ceramic insulation coatings to facilitate the preparation of high-performance superconducting magnets is extremely challenging, due to the complex heat treatment process of bismuth system high temperature superconductivity (HTS) wires. A novel strategy for fabricating a porous TiO₂ insulation layer with a three-dimensional (3D) reticular architecture based on highly dispersed ceramic slurry has been reported herein. To enhance the structural strength and oxygen permeability of the coating, polyethylene glycol and oligomeric ethyl silicate were introduced as modifiers to construct a grid-like porous framework. The as-prepared insulation coating possesses micron-sized pore and crack structures. The high-temperature stability of the insulation layer and its compatibility with the heat treatment of Ag-sheathed Bi-2223 wire was verified by measuring the effect of coating on the critical current. X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray spectroscopy (EDS) show that this insulation coating with a thickness of approximately 25 μm can significantly inhibit the diffusion of metal sheath components and Bi. In addition, the TiO₂ insulation coating has also been successfully prepared on Bi-2223 tape by a reel-to-reel coating system. The results indicates that the TiO₂ insulation coating has great application potential as an insulation material for HTS magnets and provides new insights for the development of effective insulation material for Bi-2212 wires.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25310-25323"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the origins of conductivity enhancement in graphite-like carbon/ZnO:C hybrid ceramics prepared via carbothermal reduction: An XPS investigation","authors":"Alireza Farahi","doi":"10.1016/j.ceramint.2025.03.133","DOIUrl":"10.1016/j.ceramint.2025.03.133","url":null,"abstract":"<div><div>In this study, the carbothermal reduction (CTR) technique was employed to incorporate carbon atoms into the ZnO matrix. X-ray photoelectron spectroscopy (XPS) measurements on the sputter-cleaned cross section of the reduced sample revealed that most carbon atoms were arranged in a highly conductive sp² graphite-like (GLC) configuration. The formation mechanism of GLC within the pores, along with the effects of temperature and pressure on this process, was studied using thermodynamic calculations. In addition to the formation of GLC, the CTR reaction was found to facilitate the substitution of C dopants at both Zn and O sites. The effects of C incorporation on charge transport properties were also investigated. The electrical conductivity of the GLC/ZnO:C ceramic reached 2.39 S/cm, which was nearly 6000 times higher than that of the undoped ZnO ceramic. These findings provide valuable insights into the chemical composition and enhanced electrical conductivity of carbothermally reduced ZnO ceramics. Furthermore, they elucidate the effects of carbon contamination on the chemical and electrical properties of ceramics fabricated in close proximity to external carbonaceous sources, such as graphite molds used in spark plasma sintering (SPS).</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24502-24510"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the high temperature mechanical properties of boron nitride nanosheet/CuTi composite by increasing grain growth activation energy","authors":"Yekun Yuan ,&nbsp;Zhiyi Ru ,&nbsp;Jianhong Yi ,&nbsp;Liang Liu ,&nbsp;Rui Bao ,&nbsp;Caiju Li ,&nbsp;Yichun Liu ,&nbsp;Fengxian Li ,&nbsp;Xin Kong ,&nbsp;Xiaofeng Chen","doi":"10.1016/j.ceramint.2025.03.208","DOIUrl":"10.1016/j.ceramint.2025.03.208","url":null,"abstract":"<div><div>In order to develop a new generation of high-strength, heat-resistant Cu material, boron nitride nanosheet (BNNS)/CuTi composite was fabricated using matrix alloying and powder metallurgy techniques. The interfacial three-dimensional structure (I-3DS) was constructed by solid-state interfacial reactions between BNNS and Ti, and the mechanically bonded 2D interface was transformed into a chemically bonded 3D interface, which significantly improved interface bonding strength. BNNS/CuTi composite exhibited outstanding mechanical properties, with an ultimate tensile strength of 480 ± 6 MPa at 573 K, which has high competitiveness among existing heat-resistant Cu materials. Experimental and simulation results showed that BNNS increased composite grain growth activation energy, effectively inhibit grain boundary migration and grain rotation during high temperature deformation, so as to improve high temperature stability. BNNS and I-3DS creatively break through the bottleneck restricting improvement of high temperature mechanical properties in Cu matrix composites (CMCs), and opens a window for development and application of a new generation of heat-resistant CMCs.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25258-25268"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of crystallization via heat treatment on the physicochemical and biological properties of Y-TZP ceramics modified by infiltration with different bioactive glasses","authors":"Qixuan He ,&nbsp;Yanping Qin ,&nbsp;Wenmin Zhang ,&nbsp;Jiandong Ye","doi":"10.1016/j.ceramint.2025.03.143","DOIUrl":"10.1016/j.ceramint.2025.03.143","url":null,"abstract":"<div><div>This study investigates the effects of crystallization via heat treatment on the physicochemical and biological properties of yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramics modified through the infiltration of bioactive glasses (BGs) with different compositions. Y-TZP ceramics underwent a dip-coating process to construct a porous surface layer, followed by BG sol infiltration and subsequent heat treatment. The results demonstrate that infiltration and heat treatment led to the formation of distinct crystalline phases within the BGs, while preserving the tetragonal phase of Y-TZP. Surface modification significantly enhanced protein adsorption, optimized ion release behavior, and promoted cell proliferation. Among the various BG compositions, Y-TZP ceramics infiltrated with 77S BG exhibited superior performance in promoting rapid osteogenic differentiation of mouse bone marrow mesenchymal stem cells (mBMSCs). These findings suggest that the construction of surface porous Y-TZP layer and the integration of BGs into Y-TZP ceramics hold potential for enhancing the bioactivity and clinical performance of dental implants.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24605-24617"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced piezoelectric response and Curie temperature of BiFeO3-BaTiO3 by substituting PbTiO3 for BaTiO3","authors":"Lingxian Sun,&nbsp;Chong Zhao,&nbsp;Xiangping Jiang,&nbsp;Chao Chen,&nbsp;Hehong Zhang,&nbsp;Benjin Xu,&nbsp;Han Xu,&nbsp;Yunkai Wu","doi":"10.1016/j.ceramint.2025.03.175","DOIUrl":"10.1016/j.ceramint.2025.03.175","url":null,"abstract":"<div><div>In this paper, ternary piezoelectric ceramics with PT gradually replacing BT, 0.65BF-(0.35-<em>x</em>)BT-<em>x</em>PT was successfully synthesized by traditional solid-state method. Achieving excellent performance when <em>x</em> = 0.08 (<em>d</em>₃₃ = 220 pC/N, <em>T</em>_C = 435 °C, <em>P</em>_r = 24.19 μC/cm²). To analyze the structural features of the ceramics, X-ray diffraction (XRD) and Raman spectroscopy were employed. Finally, the ferroelectricity of the sample was tested. The results indicate that the appropriate substitution of BT with PT results in a sample structure that coexists with the R phase and the pC phase at the MPB (Morphotropic Phase Boundary) structure, thereby achieving greater piezoelectric performance. With the increase of PT, the R phase increases and the content of pC phase decreases. The increase in the R phase leads to greater lattice distortion and a rise in the Curie temperature. An increase in PT causes a reduction in nanodomains and the formation of macrodomains. The domain structure with both macrodomains and nanodomains is also one of the reasons for the enhanced piezoelectric performance of the sample. A high <em>T</em>_c and a high <em>d</em>₃₃ also indicate that BF-BT-PT ceramics have broad application potential at high temperatures.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24945-24951"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bulk composite of silica and detonation nanodiamonds with partially removed sp2 shells","authors":"M.A. Korotkova ,&nbsp;V.S. Efimchenko ,&nbsp;V.E. Antonov ,&nbsp;O.I. Barkalov ,&nbsp;I.G. Fomina ,&nbsp;T.N. Fursova ,&nbsp;K.A. Gavrilicheva ,&nbsp;S.V. Zaitsev ,&nbsp;I.O. Gozhikova ,&nbsp;A.Ya. Vul' ,&nbsp;S.A. Lermontov","doi":"10.1016/j.ceramint.2025.03.197","DOIUrl":"10.1016/j.ceramint.2025.03.197","url":null,"abstract":"<div><div>Diamonds with impurity-vacancy centers are an attractive material for microphotonics and can be used, for example, as single photon emitters. Detonation nanodiamonds (DNDs) with intrinsic single nitrogen-vacancy (NV) centers are cheap and suitable for mass production. This paper proposes a way to overcome the two main properties of the DNDs: the tendency to agglomeration and the presence of a thick shell of sp²-hybridized carbon around each detonation nanodiamond particle. It is shown that SiO₂ aerogel with uniformly distributed single diamond nanocrystals compressed to 7.5 GPa at 250 °C irreversibly transforms into a dense and chemically inert material. Subsequent treatment of this material in a hydrogen atmosphere at 7.5 GPa and 600 °C passivates dangling bonds in the silica matrix and eliminates its parasitic luminescence. The hydrogenation also largely removes the sp² shells from DNDs and converts their neutral NV⁰ centers into more useable negatively charged NV⁻ centers. After each stage of preparing the dense DNDs/SiO₂ composite, the material was examined by X-ray diffraction and Infrared and Raman spectroscopy.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25160-25168"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced photoluminescence and energy transfer of Li+ co-doped GdPO4·H2O:Tb3+,Ce3+ green phosphors","authors":"Xiaoyan Meng ,&nbsp;Lirong Zhang ,&nbsp;Chengliang Zhong ,&nbsp;Yongqi Ruan ,&nbsp;Yingying Lv ,&nbsp;Jianlei Liu ,&nbsp;Zhenghui Zhu ,&nbsp;Siyan Peng ,&nbsp;Liusai Yang","doi":"10.1016/j.ceramint.2025.03.198","DOIUrl":"10.1016/j.ceramint.2025.03.198","url":null,"abstract":"<div><div>A series of luminescent emission-tunable Gd_{0.85-<em>x</em>}Tb_0.15PO₄·H₂O:<em>x</em>Ce³⁺ (<em>x</em> = 0–0.06) and Gd_{0.80-<em>y</em>}Tb_0.15Ce_0.05PO₄·H₂O:<em>y</em>Li⁺ (<em>y</em> = 0.01–0.06) phosphors have been successfully synthesized via hydrothermal method. The phase structure, morphology, elemental composition, surface absorption and luminescence properties of the samples were characterized by XRD, SEM, EDS, FT-IR and PL, respectively. The results show that all the synthesized samples are all pure hexagonal phase structure of GdPO₄·H₂O nanorods. The influence of Ce³⁺ and Li⁺ concentrations on the photoluminescence properties of the Li⁺ co-doped GdPO₄·H₂O:Tb³⁺,Ce³⁺ green phosphors have been thoroughly investigated. When Ce³⁺ and Li⁺ ions were co-doped into GdPO₄·H₂O:Tb³⁺, the excitation band red-shifted from 274 to 302 nm, and the emission intensity was enhanced up to approximately 30 times compared with that of Ce³⁺/Li⁺-free Gd_0.85Tb_0.15PO₄·H₂O because of the efficient energy transfer from Ce³⁺→Tb³⁺ in the GdPO₄·H₂O host. Moreover, the optimized Gd_0.76Tb_0.15Ce_0.05PO₄·H₂O:0.04Li⁺ phosphor has an internal quantum efficiency of 25.94 % and exhibits superior thermal stability (162.9 %@473 K). A new design strategy was proposed to enhance the crystallinity and luminescence intensity of GdPO₄·H₂O:Tb³⁺,Ce³⁺ green phosphor by inducing a flux or sensitizer through Li⁺ co-doping. These results indicate that the GdPO₄·H₂O:Tb³⁺,Ce³⁺,Li⁺ phosphor hold promising potential application as a UV-convertible phosphor for w-LEDs due to its wide excitation band in the ultraviolet region and effective generation of strong green emission.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25169-25181"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}