Materials Research Bulletin最新文献

{"title":"Wide Angle Stable Wideband Absorber based Solar Energy Harvester","authors":"Bhoomi,&nbsp;Vikram Maurya,&nbsp;Sarthak Singhal","doi":"10.1016/j.materresbull.2025.113452","DOIUrl":"10.1016/j.materresbull.2025.113452","url":null,"abstract":"<div><div>A wideband absorber-based solar energy harvester operating in infrared (IR), visible, and ultraviolet (UV) regions is investigated in this paper. The resonating structure comprises a rectangular notch-loaded trapezoidal-shaped metallic section arranged symmetrically along four corners. Its unit cell dimension is 90×90×10 nm³ and achieves more than 90% absorption (A) for the frequency range of 189.31 to 4308.958 THz. It is polarization-dependent but has A≥90% throughout the operating frequency band for Transverse Magnetic (TM) as well as Transverse Electric (TE) modes. This absorber has A≥90% for incident angle (θ)≤50^o and A≥80% for θ≤60^o in both of the TE and the TM modes. The designed absorber achieves 97.30% solar absorption efficiency (<span><math><msub><mrow><mi>η</mi></mrow><mi>A</mi></msub></math></span>) along with the thermal emission efficiency (<span><math><msub><mrow><mi>η</mi></mrow><mi>E</mi></msub></math></span>) of 81.45%, 92.55%, and 96.44% at 1000K, 2000K, and 3000K, respectively. A high Photo-Thermal Conversion Efficiency (PTCE) of 97.26% is observed at 100 K temperature with a solar concentration (C) of 100.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113452"},"PeriodicalIF":5.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767557","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}

{"title":"Corrigendum to “Host-sensitized phosphorescence of Mn4+, Pr3+,4+ and Nd3+ in MgAl2Si2O8” [Materials Research Bulletin, 47 (2012) 1138-1141]","authors":"Esra Çırçır ,&nbsp;Nilgun Ozpozan Kalaycioglu","doi":"10.1016/j.materresbull.2025.113429","DOIUrl":"10.1016/j.materresbull.2025.113429","url":null,"abstract":"","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113429"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spectroscopy of Yb3+ ions in multisite MgMoO4 crystal","authors":"Ghassen Zin Elabedine ,&nbsp;Yana S. Didenko ,&nbsp;Pavel Loiko ,&nbsp;Kirill A. Subbotin ,&nbsp;Anatolii I. Titov ,&nbsp;Liudmila D. Iskhakova ,&nbsp;Denis A. Lis ,&nbsp;Sergei K. Pavlov ,&nbsp;Yulia I. Zimina ,&nbsp;Kristina V. Kuleshova ,&nbsp;Rosa Maria Solé ,&nbsp;Magdalena Aguiló ,&nbsp;Francesc Díaz ,&nbsp;Patrice Camy ,&nbsp;Xavier Mateos","doi":"10.1016/j.materresbull.2025.113451","DOIUrl":"10.1016/j.materresbull.2025.113451","url":null,"abstract":"<div><div>Yb³⁺-doped magnesium monomolybdate crystal (Yb:MgMoO₄) is grown by the Czochralski method. The crystal structure, thermal expansion, vibronic properties, polarized room- and low-temperature spectroscopy of this new compound were studied. According to the Rietveld refinement, Yb:MgMoO₄ belongs to the monoclinic class (sp. gr. <em>C</em>2/<em>m</em>, lattice constants: <em>a</em> = 10.276(9)Å, <em>b</em> = 9.289(6)Å, <em>c</em> = 7.027(6)Å and <em>β</em> = 106.903(8)°). The highest-energy Raman mode of Yb:MgMoO₄ is found at 969 cm^-1 and assigned to symmetric stretching vibrations of [MoO₄]^2- tetrahedra. Yb³⁺ ions in MgMoO₄ exhibit intense and broad absorption at 978 nm, relatively broad and smooth emission bands above 1 μm (stimulated-emission cross-section: <em>σ</em>_SE = 0.76 × 10^–20 cm² at 1031 nm for light polarization <strong><em>E</em></strong> || <strong><em>c</em></strong>) and a long luminescence lifetime (0.63 ms). The low-temperature (12 K) spectroscopic studies evidenced a multi-site behavior for Yb³⁺ ions in MgMoO₄ revealing at least 8 non-equivalent optical centers which are assigned to different charge compensation mechanisms. This induces a strong inhomogeneous spectral line broadening. For envisioned laser applications, the problem of low Yb³⁺ segregation coefficient (<em>K</em>_Yb ∼0.029) needs to be solved.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113451"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777625","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}

{"title":"Pre-Carbonization of B/N/O heteroatom-codoped hierarchical porous carbon spheres derived from bio-waste orange peel for high-performance supercapacitors","authors":"Madhan Vinu ,&nbsp;Samikannu Prabu ,&nbsp;Anita Virgin ,&nbsp;Kung-Yuh Chiang ,&nbsp;Bhavya Srivastava ,&nbsp;Ravi Ranjithkumar","doi":"10.1016/j.materresbull.2025.113441","DOIUrl":"10.1016/j.materresbull.2025.113441","url":null,"abstract":"<div><div>Here, boron, nitrogen, and oxygen heteroatoms-doped hierarchical porous carbon spheres (HPCS) have been produced by consuming scrap bio-waste orange peel as a natural carbon precursor in a low-cost production technique. The synthetic method provides a quick and environmentally friendly approach for fabricating B/N/O<img>HPCS by annealing carbon materials with boric acid followed by NaOH activation. Additionally, autoclave pre-carbonization promotes the polymerization of the precursors, leading to an increased carbon yield. The synthesis of B/N/O<img>HPCS products with a multi-scale pore structure can enhance specific capacitance activity because of the synergistic usage of heteroatoms, efficient mass transfer, and improved transport kinetics from linked 3D architecture. As a result, the B/N/O<img>HPCS-750 pre-carbonization material for the Supercapacitors (SC) exhibits a high specific capacitance of 436 F g^-1 at 0.5 A g^-1 in 1 M Na₂SO₄. Also, the B/N/O<img>HPCS-750-based symmetric SC demonstrates exceptionally high specific capacitance of 365 F g⁻1 at a current density of 0.5 Ag⁻1 and an impressive power density of 456.2 W kg⁻1 and an energy density of 28.6 Wh kg⁻1. Notably, the SC maintains outstanding capacitance retention of about 92 % even after 30,000 charge-discharge cycles at a high current density of 10 Ag⁻¹. This study displays the excellent performance of SCs fabricated with heteroatom-doped HPCS, synthesized via a salt-assisted method, offering an eco-friendly solution for converting bio-waste into valuable materials.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113441"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767574","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}

{"title":"Mn1−xSnxTe composite nanocubes synthesized by hydrothermal method for optoelectronic and dielectric applications","authors":"Abinash Parida ,&nbsp;Gadadhara Swain ,&nbsp;Ramakanta Naik","doi":"10.1016/j.materresbull.2025.113447","DOIUrl":"10.1016/j.materresbull.2025.113447","url":null,"abstract":"<div><div>The dielectric materials based on Mn-Sn-Te are in demand for their unique properties like minimum loss, satisfactory temperature stability, and extensive energy storage capability. The present work reports on the alterations in structural, optical, and dielectric characteristics of Mn_1−xSn_xTe (0.1, 0.25, 0.5, 0.75, and 0.9) composite by the variation in Mn and Sn content, which were synthesized by single-step hydrothermal method. The X-ray diffraction study confirmed the cubic form of the crystallites with a decrease in crystallite size from 71 nm to 23 nm, whereas the dislocation and strain values increased as the Mn amount decreased in the composition. The presence of two polycrystalline phases, MnTe and SnTe, was observed from the Raman analysis. The TEM analysis confirmed the presence of these two phases with a lattice spacing of 1.58 Å for the SnTe (400) and 1.30 Å for the MnTe (144) plane. Large reflectance was found from the high Mn content sample, and these samples exhibit low bandgap values, which decreased from 0.63 eV to 0.41 eV with a decrease in Mn content. The refractive index increased from 3.86 to 4.35 with the decrease in Mn content. The morphological analysis through FESEM showed the nanocubes. The EDX study showed the presence of all the constituent elements in the synthesized samples, which was also supported by the XPS analysis. The dielectric constant and AC conductivity were found to be more at higher temperatures. The prepared sample showed a maximum dielectric constant of 339,435 for 400 °C sample at 1 KHz frequency<em>.</em> Applications for electronic and energy storage devices may benefit from the SnMnS matrix's aforementioned optical, electrical, and dielectric characteristics.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113447"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704440","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}

{"title":"Phase diagram of polar states in the BaTiO3 – BaSnO3 – PbTiO3 system","authors":"Vladislav Kozlov ,&nbsp;Alexandr Bush ,&nbsp;Mikhail Talanov ,&nbsp;Vladimir Sirotinkin","doi":"10.1016/j.materresbull.2025.113446","DOIUrl":"10.1016/j.materresbull.2025.113446","url":null,"abstract":"<div><div>The aim of the work was the synthesis and studies of ceramic samples of the ternary BaTiO₃–BaSnO₃–PbTiO₃ system, which had not been systematically studied before. Thermogravimetric, X-ray diffraction, dielectric and pyroelectric studies were performed on the synthesized samples of (1–<em>x</em>)BaTi_1-ySn_yO₃·<em>x</em>PbTiO₃ compositions with 0 ≤ <em>y,x</em> ≤ 1. It was found that solid solutions with the perovskite structure are formed throughout the composition region in the system. Concentration regions in which solid solutions of different symmetries are formed have been determined. The results of dielectric and pyroelectric studies show that an increase in BaSnO₃ content in samples leads to a change in their dielectric properties from ferroelectric to relaxor ferroelectric, then to properties such as those of dipole glass, and then to the properties of linear dielectrics. The research results are presented in the form of <em>x</em>–<em>T</em> phase diagrams for the entire concentration range of the (1–<em>x</em>)Ba(Ti_1–ySn_y)O₃·<em>x</em>PbTiO₃ system.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113446"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746941","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}

{"title":"Empirical analysis method for evaluating variable materials and scattering parameters and reduced Fermi energy of n-type bismuth telluride thermoelectric materials at room temperature","authors":"Kaito Kitagawa ,&nbsp;Chika Kanda ,&nbsp;Taku Iwamoto ,&nbsp;Ryohei Yasuda ,&nbsp;Jota Kanaya ,&nbsp;Shunta Uno ,&nbsp;Daigo Shimada ,&nbsp;Ai Maruhashi ,&nbsp;Mongkol Bumrungpon ,&nbsp;Kazuhiro Hasezaki","doi":"10.1016/j.materresbull.2025.113440","DOIUrl":"10.1016/j.materresbull.2025.113440","url":null,"abstract":"<div><div>The variable materials parameter <em>β</em>, scattering parameter <em>γ</em>, and reduced Fermi energy <em>η</em> in <em>n</em>-type bismuth telluride produced by mechanical grinding followed by hot pressing were evaluated using the Fermi-Dirac statistics and a one-electron parabolic model at room temperature. The thermal conductivity <em>κ</em> was assumed to be a quadratic function of the electrical conductivity <em>σ</em> under a constant phonon thermal conductivity <em>κ</em>_ph and temperature. The <em>γ</em> and <em>η</em> were estimated using <em>L</em> and the measured Seebeck coefficient <em>α</em> composed of <em>γ</em> and <em>η</em>. The variational trend of <em>L</em> with <em>γ</em> was similar to that of non-degenerate semiconductors. The analytical <em>ZT_βγη</em> composed of <em>β, γ</em>, and <em>η</em> obtained based on the relationship between the dimensionless figure of merit <em>ZT</em> and <em>η</em> is consistent with the measured <em>ZT_ασκ</em> composed of <em>α, σ</em>, and <em>κ</em>. The obtained <em>β, γ</em>, and <em>η</em> indicate fundamental physical properties of thermoelectric materials alongside <em>α, σ</em>, and <em>κ</em>.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113440"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746943","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}

{"title":"Magnetic nanofilms prepared by Langmuir-Blodgett nanoarchitectonics using Co and Co-Y ferrite nanoparticles","authors":"Viviana B. Daboin,&nbsp;Julieta S. Riva,&nbsp;Paula G. Bercoff","doi":"10.1016/j.materresbull.2025.113449","DOIUrl":"10.1016/j.materresbull.2025.113449","url":null,"abstract":"<div><div>The magnetic properties of nanofilms prepared by Langmuir-Blodgett nanoarchitectonics with CoFe_2-xY_xO₄ (<em>x</em> = 0; 0.2) nanoparticles (NPs), are studied. Magnetization measurements <em>M</em>(<em>H</em>) of the nanofilms and the NPs were performed, with maximum applied magnetic fields of ± 5 T at different temperatures from 5 K to 300 K, as well as zero-field-cooling, field-cooling curves (ZFC-FC).</div><div>In the nanofilms, saturation magnetization as a function of temperature, <em>M</em>_S(<em>T</em>), and ZFC-FC curves exhibit a sharp increase below 50 K, which is attributed to the existence of a disordered spin shell in the NPs forming the nanofilms, where superficial effects are more relevant than in compacted NPs. The <em>M</em>_S(<em>T</em>) curves were fitted with the modified Bloch's law plus an additional term corresponding to surface spins. Freezing temperatures of (6 ± 1) K for the nanofilm prepared with CoFe₂O₄ and (14 ± 3) K for the one made with CoFe_2–0.8Y_0.2O₄ were obtained, indicating that the contribution of freezing spins to <em>M</em>_S(<em>T</em>) is negligible above approximately 5 <em>T_f</em>.</div><div>Coercivities are higher for the NPs with yttrium substitution due to their smaller size and <em>M</em>_S reduction as a consequence of yttrium inclusion in the spinel lattice. Both NPs and nanofilms follow the modified Kneller's law, with the exponent greater than 0.5, indicating the presence of magnetic dipolar interactions.</div><div>At room temperature, the effective magnetic anisotropy (<em>K</em>_eff) of the nanofilm prepared with CoFe_1.8Y_0.2O₄ NPs (4.2 × 10⁵ J/m³) is smaller than <em>K</em>_eff for the nanofilm made of CoFe₂O₄ NPs (5.6 × 10⁵ J/m³). Nonetheless, <em>K</em>_eff values for both nanofilms are relatively large, making these nanoarchitectures promising for different applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113449"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760217","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}

{"title":"Enhanced mechanical and thermal shock performance by oxygen competition in plasma sprayed coating","authors":"Shuai Zhang ,&nbsp;Zhiqiang Li ,&nbsp;Fei Li ,&nbsp;Rui Xu ,&nbsp;Gaotian Yin ,&nbsp;Hui Li ,&nbsp;Nana Zhao ,&nbsp;Shufeng Liu ,&nbsp;Fei Lu ,&nbsp;Liqing Wang ,&nbsp;Song Ma","doi":"10.1016/j.materresbull.2025.113450","DOIUrl":"10.1016/j.materresbull.2025.113450","url":null,"abstract":"<div><div>Al₂O₃–13 wt.% TiO₂ (AT13) coating is a significant ceramic coating in surface protection of key mechanical metal components such as plunger pumps, bearings, and turbine blades. However, the existence of the soft phase Al₂TiO₅ severely weakens the mechanical and thermal shock performance of the AT13 coating. With the modulating character of the oxygen partial pressure alteration induced by Ce³⁺/Ce⁴⁺ redox couple, the variable valence rare earth oxide CeO₂ as a reinforcing assistant additive in AT13 coatings with different weight percentages to form a new type of AT13/CeO₂ composite coating. With the increase of the CeO₂ in the composite, the porosity and structural flaws of the coatings are greatly decreased, leading to an increase in their lubrication and chemical stability. Therefore, significantly enhanced mechanical properties and shock performance have been noted in the AT13/CeO₂ coating. Under dry sliding conditions, the tribological test revealed that the anti-wear rate and anti-friction increased by 47 % and 18 % in the AT13/CeO₂ coating, respectively. The thermal shock resistance of AT13/CeO₂ coatings increases more than 6 times that of AT13 coating. Introducing variable valence rare earth oxide CeO₂ supplies a new preparation strategy for improving the ceramic coating.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113450"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746942","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}

{"title":"Additive manufacturing of superconductors: Opportunities and challenges","authors":"Tugrul Talha Ersoz ,&nbsp;Abd El-Moez A. Mohamed ,&nbsp;Moataz M. Attallah","doi":"10.1016/j.materresbull.2025.113448","DOIUrl":"10.1016/j.materresbull.2025.113448","url":null,"abstract":"<div><div>Additive manufacturing (AM) has revolutionised the production of materials and components. This review article introduces superconductivity and conventional fabrication methods, then overviews the progress and advancements in AM techniques applied explicitly to superconductors. It discusses the challenges and opportunities of AM methods like laser powder bed fusion (LPBF), electron beam melting (EBM), and extrusion-based approaches, examining their potential to overcome the limitations of conventional methods. The article highlights the applications reshaped by the AM and includes case studies showcasing how AM enables complex geometries for advanced superconducting components. Finally, the review explores the potential directions for further research and development in this field, emphasising the need for innovation and interdisciplinary collaboration. This review aims to serve as a valuable resource for researchers and engineers, offering insights into the significant impact of AM on advancing superconductivity technology.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113448"},"PeriodicalIF":5.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}