Materials Research Bulletin最新文献_第5页

Structural and luminescence analysis of Li+/Na+ co-doped K7 CaGd2 (B5 O10)3:Tb3+ phosphors with enhanced green emission and thermal stability Li+/Na+共掺K7 CaGd2 (B5 O10)3:Tb3+荧光粉的结构和发光分析

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-14 DOI: 10.1016/j.materresbull.2026.114011

S. Yusan , M.B. Coban , U.H. Kaynar , I.G. Kaptanoglu , Abeer S. Altowyan , Jabir Hakami , H. Aydin , E.E. Karali , A. Canimoglu , N. Can

{"title":"Structural and luminescence analysis of Li+/Na+ co-doped K7 CaGd2 (B5 O10)3:Tb3+ phosphors with enhanced green emission and thermal stability","authors":"S. Yusan , M.B. Coban , U.H. Kaynar , I.G. Kaptanoglu , Abeer S. Altowyan , Jabir Hakami , H. Aydin , E.E. Karali , A. Canimoglu , N. Can","doi":"10.1016/j.materresbull.2026.114011","DOIUrl":"10.1016/j.materresbull.2026.114011","url":null,"abstract":"<div><div>Li⁺/Na⁺ co-doped K7CaGd2(B5O10)3:Tb3+ (KCGBO) green phosphors were synthesized via a microwave-assisted combustion method. XRD confirmed a pure rhombohedral phase (R32). Under 378 nm excitation, strong green emission at ∼544 nm (⁵D₄→⁷F₅) was observed, optimized at 3 wt% Tb³⁺ before quenching. Li⁺/Na⁺ co-doping enhanced luminescence through local field distortion and improved energy transfer. Judd–Ofelt analysis revealed superior radiative efficiency for Li⁺ co-doped samples (AJ = 1.12 × 10⁶ s⁻¹, τrad= 0.089 ms, G = 1.08 × 10–22 cm²). Thermal studies showed 82% intensity retention at 450 K with partial anti-thermal quenching and activation energy of ∼0.52 eV, indicating suppressed non-radiative losses. The results demonstrate that Li⁺/Na⁺ co-doping and optimized Tb³⁺ content synergistically improve emission efficiency and thermal stability, making KCGBO:Tb³⁺ a promising green phosphor for near-UV solid-state lighting.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"198 ","pages":"Article 114011"},"PeriodicalIF":5.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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The correlation between microstructure and grain boundary plane distribution of hot-deformed Nd-Fe-B magnets—From the perspective of the five parameter analysis method 热变形Nd-Fe-B磁体显微组织与晶界面分布的关系——基于五参数分析方法的视角

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-23 DOI: 10.1016/j.materresbull.2026.114027

Qian Li , Wenhui Wang , Sujie Tang , Yuan Teng , Hanxiao Zhou

{"title":"The correlation between microstructure and grain boundary plane distribution of hot-deformed Nd-Fe-B magnets—From the perspective of the five parameter analysis method","authors":"Qian Li , Wenhui Wang , Sujie Tang , Yuan Teng , Hanxiao Zhou","doi":"10.1016/j.materresbull.2026.114027","DOIUrl":"10.1016/j.materresbull.2026.114027","url":null,"abstract":"<div><div>Hot-deformed Nd-Fe-B magnets underpin many high-efficiency energy technologies because of their exceptional magnetic properties. Yet the microstructural origins of their strong anisotropy—particularly the influence of grain boundary structure and character—remain only partially resolved. In this work, we correlate grain boundary plane distributions to magnetic anisotropy along distinct crystallographic directions. Nanocrystalline Nd-Fe-B magnets were fabricated by spark plasma sintering, followed by hot pressing and hot deformation. Using electron backscatter diffraction coupled with five parameter analysis, we quantitatively mapped grain boundary orientations and microstructural features along the c-axis and in non-c-axis directions. The c-axis-aligned specimen shows a pronounced (001) texture, exhibiting a remanence of 12.5 kG and a maximum energy product of 34.9 MGOe—approximately 150% higher than values measured in the non-c-axis direction. Five parameter analysis further reveals that grain boundaries parallel to the c-axis are enriched in a characteristic 39°/(001) misorientation and cluster strongly near the (110) plane (multiples of random distribution, MRD = 7.4), whereas grain boundaries sampled along the non-c-axis direction are comparatively dispersed (MRD = 2.3). These observations suggest that the elevated remanence primarily reflects the strengthened c-axis texture, while the higher coercivity correlates with a continuous grain boundary network that suppresses domain-wall propagation. Collectively, our results provide a microstructural basis for designing anisotropic Nd-Fe-B magnets through deliberate texture control, offering both mechanistic insight and a practical route to improved permanent-magnet processing.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"198 ","pages":"Article 114027"},"PeriodicalIF":5.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Structural, chemical, and functional recovery of gamma-irradiated B4C microparticles through thermal annealing 伽玛辐照B4C微粒通过热退火的结构、化学和功能恢复

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-24 DOI: 10.1016/j.materresbull.2026.114028

Fatemeh Soltanifar , Ehsan Ebrahimibasabi , Mohammad Mahdi Shahidi

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Preparation and sodium storage mechanism of Sn-doped molybdenum trisulfide for high-performance sodium-ion battery anode 高性能钠离子电池负极用掺锡三硫化钼的制备及其储钠机理

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-23 DOI: 10.1016/j.materresbull.2026.114024

Yao Tang , Xinyu Wang , Long Xi , Ling Zhu , Huiyu Zhang , Jie Ma , Xiangsi Wu , Xianming Wu , Yonggang Huang , Xianwen Wu

{"title":"Preparation and sodium storage mechanism of Sn-doped molybdenum trisulfide for high-performance sodium-ion battery anode","authors":"Yao Tang , Xinyu Wang , Long Xi , Ling Zhu , Huiyu Zhang , Jie Ma , Xiangsi Wu , Xianming Wu , Yonggang Huang , Xianwen Wu","doi":"10.1016/j.materresbull.2026.114024","DOIUrl":"10.1016/j.materresbull.2026.114024","url":null,"abstract":"<div><div>The development of advanced anode materials is pivotal for sodium-ion batteries. Herein, we synthesized Sn-doped MoS3/carbon nanotube (SMS/CNT) composites via a simple one-step solvothermal method. CNTs enhance electrical conductivity and structural stability, while Sn2+ doping modulates MoS3’s electronic structure, lowering Na⁺ intercalation/deintercalation activation energy and accelerating ion diffusion. Ex situ XRD confirms that MoS3 forms NaxMoS3 during Na⁺ intercalation, and NaxMoSy generates in the Na⁺ deintercalation process. The intermediates of NaxMoSy enhance the electrochemical reversibility of MoS3 anode. When discharged at 0.5 A·g-1, SMS/CNT delivers a high capacity of 597 mAh·g-1 (66.0% retention after 150 cycles), and 183 mAh·g-1 is retained at 20 A·g-1. Besides, the SMS/CNT|| Na0.44MnO2 full cell exhibits excellent capacity and rate performance. This work provides a scalable route for high-performance metal sulfide anodes and supports the advancement of sodium ion batteries.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"198 ","pages":"Article 114024"},"PeriodicalIF":5.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Structural, physical, and mechanical properties of B2O3-BaO-CaO-PbO2-La2O3 glasses: Experimental and Monte Carlo simulation on the role of PbO2 / La2O3 on radiation shielding application B2O3-BaO-CaO-PbO2-La2O3玻璃的结构、物理和力学性能：PbO2 / La2O3在辐射屏蔽应用中的实验和蒙特卡罗模拟

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-22 DOI: 10.1016/j.materresbull.2026.114023

Shrikant Biradar , Manjunatha , K.A. Mahmoud , A.S. Bennal , M.I. Sayyed

{"title":"Structural, physical, and mechanical properties of B2O3-BaO-CaO-PbO2-La2O3 glasses: Experimental and Monte Carlo simulation on the role of PbO2 / La2O3 on radiation shielding application","authors":"Shrikant Biradar , Manjunatha , K.A. Mahmoud , A.S. Bennal , M.I. Sayyed","doi":"10.1016/j.materresbull.2026.114023","DOIUrl":"10.1016/j.materresbull.2026.114023","url":null,"abstract":"<div><div>This study investigates the structural, physical, mechanical, and radiation attenuation properties of (72-x-y) B2O3–19BaO-9CaO-xPbO2-yLa2O3, where x = 13, 17, 21, and 25 mol%; y = 1, 1.5, 2, and 2.5 mol%, which were produced via the fast-quenching method. XRD confirmed amorphous structures, while FTIR revealed BO4 to BO3 transitions and Pb-O/La-O vibrational bands. Mechanical analysis using the Makishima-Mackenzie model revealed a reduction in Young’s-modulus (82.610 to 66.884 GPa) and hardness (4.498 to 3.747 GPa), indicating reduced rigidity of the glasses. Radiation shielding performance improved with higher PbO2 and La2O3 content. The linear attenuation coefficient at 0.662 MeV rose from 0.329 to 0.457 cm-1. Monte Carlo simulations (MCNP-5) agreed well with experimental results, showing < ±6% deviation. The effective atomic number rose from 56.53 to 63.51, improving gamma-ray interaction probability. The radiation protection efficiency of 1 cm thick samples improved from 46.20% to 59.50% at 0.356 MeV. The findings suggest that PbO2/La2O3 incorporation enhances shielding effectiveness.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"198 ","pages":"Article 114023"},"PeriodicalIF":5.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Engineered gC3N4/NiSeO4.H2O integrated sheet like shaped interfaces for efficient oxygen evolution and hydrogen evolution reactions 工程gC3N4 / NiSeO4。水集成片状界面高效析氧和析氢反应

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-07 DOI: 10.1016/j.materresbull.2026.113994

Muhammad Abdul , Mostafa A. Ismail , Sana Ben Khalifa , Zeineb Klai , Saleh Chebaane , Abdul Rasheed Rashid , Suleyman I. Allakhverdiev

{"title":"Engineered gC3N4/NiSeO4.H2O integrated sheet like shaped interfaces for efficient oxygen evolution and hydrogen evolution reactions","authors":"Muhammad Abdul , Mostafa A. Ismail , Sana Ben Khalifa , Zeineb Klai , Saleh Chebaane , Abdul Rasheed Rashid , Suleyman I. Allakhverdiev","doi":"10.1016/j.materresbull.2026.113994","DOIUrl":"10.1016/j.materresbull.2026.113994","url":null,"abstract":"<div><div>Scientists face a primary challenge to create effective electrocatalysts that preserve high performance together with operational stability for diverse operating environments during overall water splitting. This research introduced particles decorated sheets type material gC3N4/NiSeO4.H2O as a bi-metallic catalyst manufactured through a one-step hydrothermal synthesis that provided superior electronic and structural capabilities. Specialized interface engineering along with an optimized electronic structure brings about superior bifunctional catalytic activity in alkaline conditions. The gC3N4/NiSeO4.H2O requires a low overpotenial of 62 mV for the hydrogen evolution reaction (HER) and 180 mV to the oxygen evolution reaction (OER) at 10 mA cm-2. Furthermore, the resultant material shows 75 mV dec‑1 of Tafel slope for OER to confirm the reaction mechanism. In contrast, for large-scale electrochemical usage, the material's endurance is confirmed by its exceptional long-term stability, which includes steady performance over 45 h within the 10–100 mA cm-2 range. These findings highlight the potential for noble metal-free hybrid materials to improve electrocatalytic water splitting and promote sustainable energy conversion.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"198 ","pages":"Article 113994"},"PeriodicalIF":5.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Tailoring photoluminescent properties through host modification and charge compensation in Dy3+ doped CaMg3(SO4)4 phosphor 在Dy3+掺杂的CaMg3(SO4)4荧光粉中，通过宿主修饰和电荷补偿来调整光致发光性能

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-28 DOI: 10.1016/j.materresbull.2025.113985

M.H. Taywade , Yatish R. Parauha , N.S. Dhoble , S.J. Dhoble

{"title":"Tailoring photoluminescent properties through host modification and charge compensation in Dy3+ doped CaMg3(SO4)4 phosphor","authors":"M.H. Taywade , Yatish R. Parauha , N.S. Dhoble , S.J. Dhoble","doi":"10.1016/j.materresbull.2025.113985","DOIUrl":"10.1016/j.materresbull.2025.113985","url":null,"abstract":"<div><div>Phosphor materials are commonly used in the design of high-performance solid-state lighting systems. A variety of Dy3+-doped CaMg3(SO4)4 phosphors were synthesized using high temperature solid-state reaction technique, with co-doping of tungstate [WO4]2- and alkali metal ions (Na+, K+, Li+) to improve their photoluminescence performance. Structural study proved phase purity and morphological examinations demonstrated uniform grain dispersion. The incorporation of [WO4]2- led to extensive excitation and emission bands through ligand-to-metal charge transfer (LMCT), effectively producing Dy3+ emissions. Co-doping with alkali metal ions served as effective charge compensators, greatly increasing emission intensity. Under 353 nm excitation, the phosphors produced brilliant white light with CIE coordinates in the near-white area and favorable correlated color temperature (CCT) values. These findings highlight the potential of the developed phosphors for usage in energy-efficient solid-state lighting and display systems.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113985"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plasmonic enhancement in Ag–doped MoS2 nanoparticles: Critical doping threshold and structure–property correlation 银掺杂二硫化钼纳米粒子的等离子体增强：临界掺杂阈值和结构-性能相关性

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-21 DOI: 10.1016/j.materresbull.2025.113973

Sanjay Kumar Mahla , Swechchha Kesarwani, Utsav Singh, Anirban Pal

{"title":"Plasmonic enhancement in Ag–doped MoS2 nanoparticles: Critical doping threshold and structure–property correlation","authors":"Sanjay Kumar Mahla , Swechchha Kesarwani, Utsav Singh, Anirban Pal","doi":"10.1016/j.materresbull.2025.113973","DOIUrl":"10.1016/j.materresbull.2025.113973","url":null,"abstract":"<div><div>Ag-doped MoS₂ nanoparticles were synthesized via a hydrothermal approach over a controlled doping range of 9–18% to investigate their plasmonic and spectroscopic response. An optimal Ag content of 15% produced the highest enhancement in both Raman and FTIR intensities. X-ray diffraction analysis confirmed lattice compression in MoS₂, evidenced by a shift of the (002) reflection toward higher angles, along with improved crystallinity as the crystallite size increased from 6.3 to 7.9 nm. Raman spectra exhibited well-defined E₂g and A₁g modes, with maximum intensities at the critical doping level, followed by intensity reduction at higher Ag concentrations due to defect-induced scattering. Finite-difference time-domain simulations further revealed that Ag nanoparticles with radii of 25–30 nm provide optimal electric field enhancement and absorption cross section in the visible region. The results establish clear structure–property correlations in Ag–MoS₂ plasmonic systems and demonstrate their potential for advanced spectroscopic and optical sensing applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113973"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the influence of alkaline earth fluorides on the structural and spectroscopic properties of Dy3+ doped oxyfluoride borogermanate glasses for photonic applications 探索碱土氟化物对Dy3+掺杂氟氧硼锗酸盐光子玻璃结构和光谱特性的影响

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-24 DOI: 10.1016/j.materresbull.2025.113976

Deniz Koçyiğit-Kaplan , Melis Gökçe , Aytaç Gürhan Gökçe

{"title":"Exploring the influence of alkaline earth fluorides on the structural and spectroscopic properties of Dy3+ doped oxyfluoride borogermanate glasses for photonic applications","authors":"Deniz Koçyiğit-Kaplan , Melis Gökçe , Aytaç Gürhan Gökçe","doi":"10.1016/j.materresbull.2025.113976","DOIUrl":"10.1016/j.materresbull.2025.113976","url":null,"abstract":"<div><div>Recent advances in photonic technologies have become integral to modern life, with applications in light emitting diodes, lasers and displays, all requiring highly efficient luminescent materials. To meet this requirement DyF3 doped oxyfluoride borogermanate glasses were fabricated by the melt-quenching technique to investigate the effect of alkaline earth fluorides such as BaF2, SrF2 and CaF2. The density, molar volume, refractive index, critical distance and polaron radius all follow the same increasing trend in CaF2<SrF2<BaF2. FT-IR analysis revealed that the CaF2 doped glass network exhibits a more compact structure due to the higher concentration of [BO4] units. The ligand field around the Dy3+ ions and the ionic nature of the glass network were verified by estimating bonding parameters. The Judd-Ofelt intensity parameters indicate a stronger Dy-O covalency and lower asymmetry in the CaF2 doped (BGA-Ca) sample than in the other samples. For the 4F9/2→6H13/2 transition, the BGA-Ca glass exhibits the highest values of branching ratio, stimulated emission cross-section and optical gain bandwidth among all the glasses investigated. The decay time values of the 4F9/2 level were found by fitting a single exponential curve. The chromaticity coordinates of oxyfluoride borogermanate glasses are centered near the white light region and the color correlated temperature and color purity values are in the neutral white light region. Among all glasses, BGA-Ca glass has the highest color purity value (42%). The results demonstrate the usability of all studied glasses in photonic applications such as laser action and white light generation.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113976"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Physical, mechanical, optical, and radiation shielding properties of PbO2 and La2O3 Co-Doped Borate-based Glasses: A unified approach to enhanced opto-shielding performance PbO2和La2O3共掺杂硼酸盐基玻璃的物理、机械、光学和辐射屏蔽性能：增强光屏蔽性能的统一方法

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-23 DOI: 10.1016/j.materresbull.2025.113974

M.I. Sayyed , Shrikant Biradar , Mohamed Y. Hanfi , S. Yasmin

{"title":"Physical, mechanical, optical, and radiation shielding properties of PbO2 and La2O3 Co-Doped Borate-based Glasses: A unified approach to enhanced opto-shielding performance","authors":"M.I. Sayyed , Shrikant Biradar , Mohamed Y. Hanfi , S. Yasmin","doi":"10.1016/j.materresbull.2025.113974","DOIUrl":"10.1016/j.materresbull.2025.113974","url":null,"abstract":"<div><div>In this study, borate-based glasses of formula (85-x-y)B2O3–15BaO-xPbO2-yLa2O3 (x = 20–29 mol%, y = 0.5–2 mol%) were synthesized via melt-quenching to evaluate their physical, mechanical, optical, and radiation shielding properties. Increasing PbO2 and La2O3 content raised glass density and molar volume. Young’s modulus and hardness (82.769–68.925 GPa, 4.379–3.865 GPa) decreased, indicating reduced rigidity. The direct and indirect band gaps declined (3.120–2.960 eV, 2.736–2.549 eV), while Urbach energy and refractive index increased, suggesting greater disorder and polarizability. Radiation shielding improved with increased PbO2 and La2O3: HVL at 0.662 MeV dropped from 1.26 to 1.06 cm, effective atomic number rose to 31 at 0.284 MeV, and mean free path decreased to 2.3 cm. Shielding efficiency peaked at ∼48% (0.284 MeV) and transmission reached ∼95% (1.33 MeV). These glasses exhibited 43% lower HVL than other heavy metal oxide glasses, indicating strong potential for medical and nuclear use with balanced optical and shielding properties.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113974"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0