Solid State Sciences最新文献

{"title":"Bound magnetic polarons, phonon confinement and charge transfer effects in Cr2O3/SiO2 composites","authors":"Akshay Kumar ,&nbsp;Mohit K. Sharma ,&nbsp;Naveen Yadav ,&nbsp;Ankush Vij ,&nbsp;Manish Kumar ,&nbsp;Seok-Hwan Huh ,&nbsp;Jong-Woo Kim ,&nbsp;Bon Heun Koo","doi":"10.1016/j.solidstatesciences.2025.107943","DOIUrl":"10.1016/j.solidstatesciences.2025.107943","url":null,"abstract":"<div><div>Cr₂O₃/SiO₂ composites with varying Cr₂O₃ content (10 %, 30 %, and 50 %) were synthesized and systematically analyzed for their structural, vibrational, chemical, and magnetic properties. X-ray diffraction (XRD) confirmed the successful incorporation of Cr₂O₃ into the SiO₂ matrix, with a gradual increase in Cr₂O₃ phase fraction and a minor shrinkage in lattice volume, indicative of strong interparticle interactions. Raman spectra exhibited a systematic redshift and peak broadening in the characteristic Cr₂O₃ mode, indicative of interfacial strain and phonon confinement, while Raman mapping revealed phase clustering at higher Cr₂O₃ content. X-ray photoelectron spectroscopy (XPS) identified a higher Cr⁶⁺ fraction at increased Cr₂O₃:SiO₂ fractions, indicating enhanced Cr-O-Si interactions. Magnetic measurements at 50 K and 300 K demonstrated dominant antiferromagnetic behavior alongside weak ferromagnetic contributions, attributed to defect-induced bound magnetic polarons (BMPs). BMP density increased with Cr₂O₃ content, highlighting localized spin interactions at the Cr₂O₃/SiO₂ interface. These findings elucidate the interplay of structural stability, charge transfer, and defect-mediated magnetism, offering insights for optimizing Cr₂O₃/SiO₂ composites in spintronic, magneto-optical, and catalytic applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"165 ","pages":"Article 107943"},"PeriodicalIF":3.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A detailed investigation into the curing kinetics of zinc borate-epoxy composites","authors":"Gülden Kabakçı ,&nbsp;Sümeyye Caner ,&nbsp;Cennet Yıldırım ,&nbsp;Berdan Sakallı ,&nbsp;Zeliha Bengisu Yakışık ,&nbsp;Esra Babür ,&nbsp;Güler Bengüsu Tezel ,&nbsp;Mert Kılınçel","doi":"10.1016/j.solidstatesciences.2025.107926","DOIUrl":"10.1016/j.solidstatesciences.2025.107926","url":null,"abstract":"<div><div>Epoxy resins (E) are widely used in composite applications due to their superior properties such as lightweight, manufacturing flexibility, and compatibility with numerous reinforcement elements. To enhance these properties and mitigate drawbacks like low toughness, curing agents that improve chain linkages and nanofillers are employed. Nano-sized zinc borates (ZB), commercially available materials, are frequently studied for improving the thermal stability, mechanical strength, and fire resistance of polymeric structures. ZB, with the formula 2ZnO·3B₂O₃·3.5H₂O, is a white crystalline nanomaterial that possesses low toxicity, anti-corrosive properties, low density, and compatibility with various polymers. Although many studies focus on improving the thermal stability and mechanical properties of ZB-epoxy composites (ZB-E), research on curing processes remains limited. However, selecting parameters like temperature and curing duration under system transformations is crucial for composite production. Curing kinetic parameters are essential for accurately analyzing these processes. This study evaluates the curing process of epoxy systems containing different mass fractions of ZB (2-4-6-8-10 %) through dynamic differential scanning calorimetry (DSC) tests. DSC analyses were conducted at various heating rates (3-6-9 °C/min) with a final curing temperature of 120 °C. The obtained data were analyzed using different phenomenological kinetic equation models (Kissinger, Flynn-Wall-Ozawa, Boswell, and Moynihan) in Matlab-R2019b, and the curing kinetic parameters were calculated. At the same time, the reaction order was calculated using the Crane method. In the final stage, Arrhenius equations were applied to determine the activation energies of the systems. This study assesses the influence of ZB addition on epoxy curing kinetics and the activation energies of ZB-E structures. The activation energy (E_a) values calculated from different models (Kissinger, FWO, Moynihan, and Boswell) show some variation, but the overall trend is consistent: as the ZB content increases, the activation energy generally decreases. The E_a value calculated using the Kissinger, FWO, Moynihan, and Boswell methods decreases by approximately 35.48 %, 33.27 %, 33.27 %, and 34.63 % respectively, when the ZB content increases from 0 % to 10 %. It also provides a new perspective for pre-production optimization and characterization of composite curing systems, aiming to reduce manufacturing costs and production times.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"165 ","pages":"Article 107926"},"PeriodicalIF":3.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ growth of nickel cobalt sulfide on carbon cloth by electrodeposition as binder-free electrode for supercapacitor","authors":"You Wang ,&nbsp;Lianzhen Liao ,&nbsp;Quanwen Xie ,&nbsp;Zhoulan Yin","doi":"10.1016/j.solidstatesciences.2025.107941","DOIUrl":"10.1016/j.solidstatesciences.2025.107941","url":null,"abstract":"<div><div>Development of binder-free electrode of pseudocapacitive material with excellent cycling stability for supercapacitor shows great attraction in energy storage market. Here, nickel cobalt sulfide (NCS) has been successfully grown on carbon cloth (CC) by electrodeposition in a sulfate-based electrolyte solution with thiourea (TU) as sulfur source and chelation agent. The results show that the chemical composition, microstructure and electrochemical performance of the as-prepared electrode can be modulated by tunning the deposition overpotential. The oriented growth of NCS nanosheets driven by electric field coupled with thiourea adsorption endows the deposits with intersected porous nanosheet-array microstructures, which enables the fast electronic and ionic transmissions. The optimal electrode prepared under −1.0 V (vs Ag/AgCl) (denoted as NC2S200–1.0/CC) can deliver a discharge specific capacitance of 909.5 F g⁻¹ at 1 A g⁻¹, which can maintain 89.2 % at 10 A g⁻¹, demonstrating outstanding rate performance. As successively charging and discharging for 4000 cycles at 5 A g⁻¹, 120.6 % of the initial value can be retained, illustrating exceptional cyclic stability. In addition, the assembled NC2S200–1.0/CC//AC asymmetric supercapacitor can exhibit an energy density of 26.2 Wh kg⁻¹ which corresponds to a power density of 821.1 W kg⁻¹, when charging-discharging at 2 A g⁻¹ for 10000 cycles, a capacitance retention of 75.5 % can be achieved, manifesting good cycling stability. This work provides a new idea for fabricating transition metal sulfides supported binder-free electrode by electrodeposition.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"165 ","pages":"Article 107941"},"PeriodicalIF":3.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual pathways catalytic degradation of tetracycline realized by biochar supported Fe-MIL-88B derivative nanocomposite","authors":"Mengmeng Yu ,&nbsp;Chuanyue Yang ,&nbsp;Yan Liu ,&nbsp;Ling Yin ,&nbsp;Longjiang Sun ,&nbsp;Jingquan Sha","doi":"10.1016/j.solidstatesciences.2025.107940","DOIUrl":"10.1016/j.solidstatesciences.2025.107940","url":null,"abstract":"<div><div>Due to tetracycline's (TC) stable structure and low biodegradation, developing a highly cost-effective and efficient catalyst for the elimination of TC holds significant importance. In this study, series of innovative core-shell Fe/Fe₃C@BC-0 and Fe/Fe₃C@BC-x (x = 0.3, 0.5, 1) nanocomposites were successfully synthesized, where Fe/Fe₃C@BC-x were synthesized by high-temperature calcination precursor of loading Fe-MIL-88B onto the surface of biochar (BC) from peanut hulls in situ. The effects of Fe/Fe₃C@BC-0 and Fe/Fe₃C@BC-x dosage, PDS concentration, initial pH, initial TC concentration, and coexisting anions on TC removal were studied. In comparison with the oxidation (5.8 %) by PDS alone, BC (32.6 %) and Fe/Fe₃C@BC-0 (72.6 %) in the PDS + TC system, respectively, Fe/Fe₃[email protected] exhibited exceptional degradation performance, 99.55 % degradation efficiency within just 30 min, and degradation rate constant (K value) of 0.18 min⁻¹, which is quadruple higher than that in Fe/Fe₃C@C-0+PDS (0.043 min⁻¹). The outstanding efficiency of Fe/Fe₃C@BC-x (x = 0.3, 0.5, 1) can be attributed to the presence of dual degradation pathways, namely, radical (O₂^•-, •OH, and SO₄^•-) and nonradical (¹O₂) degradation. This research opens up new possibilities for designing novel catalysts based on MOFs derivative nanocomposite and biochar materials.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"165 ","pages":"Article 107940"},"PeriodicalIF":3.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient activation of persulfate by a novel lignin hydrogel supported Fe/Cu nanoparticles for bisphenol A degradation","authors":"Yuanyuan Zhao,&nbsp;Wanling Wu,&nbsp;Jing Huang,&nbsp;Xudong Fan,&nbsp;Chaonan Xu,&nbsp;Donglin Zhao","doi":"10.1016/j.solidstatesciences.2025.107942","DOIUrl":"10.1016/j.solidstatesciences.2025.107942","url":null,"abstract":"<div><div>In this work, a novel lignin hydrogel-supported Fe/Cu nanocomposite (LH-Fe/Cu) was synthesized for the degradation of bisphenol A (BPA) in aqueous solution through persulfate (PS) activation, namely the LH-Fe/Cu-Ps system. The detailed property data demonstrated that the unique three-dimensional (3D) structure of the lignin hydrogel facilitates the dispersion of magnetic nanoparticles (Fe/Cu particles), thereby enhancing the maximum exposure of Fe/Cu particles. The three-dimensional architecture of lignin hydrogel enhances the availability of attachment sites for Fe/Cu, PS, and BPA, facilitating efficient electron transfer between Fe/Cu and PS, thereby promoting the degradation of BPA. The degradation rate of BPA in the LH-Fe/Cu-PS system reached 98.58 % within 6 min with 0.06 g/L catalyst and 0.8 mM PS. The effects of humic acid (HA) and inorganic anion on the degradation process were also studied. The quenching experiment demonstrated that the LH-Fe/Cu-PS system predominantly generates active free radicals, namely SO₄^.-, ^.OH, and O₂^.-, with SO₄^.- being the primary species. The degradation mechanism and pathway of BPA were predicted through density functional theory (DFT) calculations and intermediate analysis. The LH-Fe/Cu-PS system exhibits remarkable efficacy in the degradation of water pollutants and holds significant potential for application in the treatment of organic wastewater.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107942"},"PeriodicalIF":3.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Fe2O3 heterostructures anchored on 2D g-C3N4 composite electrode materials for supercapacitor activities","authors":"Umesh V. Shembade ,&nbsp;Babasaheb T. Shinde ,&nbsp;Mayuri G. Magadum ,&nbsp;Sandeep B. Wategaonkar ,&nbsp;Hemant V. Chavan ,&nbsp;Mohammad Rafe Hatshan ,&nbsp;Kulurumotlakatla Dasha Kumar ,&nbsp;Annasaheb V. Moholkar","doi":"10.1016/j.solidstatesciences.2025.107934","DOIUrl":"10.1016/j.solidstatesciences.2025.107934","url":null,"abstract":"<div><div>Herein, we have studied fabricating high-performance based supercapacitors (SCs) using ferrite (Fe₂O₃) heterostructures which are anchored on two-dimensional graphitic nitrite (g-C₃N₄) via simple and low-cost chemical method for energy storage application. In this work, the Fe₂O₃, g-C₃N₄, and g-C₃N₄/Fe₂O₃ composites were characterized using various physico-chemical techniques to analyze their crystal structures, stretching/bending vibrations, surface morphology, specific surface area, and the presence of the different electronic states, respectively. As a result, the prepared g-C₃N₄/Fe₂O₃ composite exhibited a high specific capacitance and capacity of 1143 F/g and 254 mAh/g at a current density of 5 mA/cm² over other electrodes. However, the fabricated device reveals the maximum energy density of 33 Wh/kg and the power density of 3200 W/kg with superior electrochemical stability of 89 % over 5000 cycles. Based on the above results, the prepared g-C₃N₄/Fe₂O₃ composites showed better flexibility, high supercapacitive performance, and a long lifetime stability. Therefore, this research opens up an exciting possibilities for developing advanced supercapacitor activities.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107934"},"PeriodicalIF":3.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A theoretical study of the bonding properties of R4Sb3 compounds","authors":"Vincent Pelletier ,&nbsp;Hugo Bouteiller ,&nbsp;Bruno Fontaine ,&nbsp;David Berthebaud ,&nbsp;Jean-Claude Crivello ,&nbsp;Franck Gascoin ,&nbsp;Takao Mori ,&nbsp;Jean-François Halet ,&nbsp;Régis Gautier","doi":"10.1016/j.solidstatesciences.2025.107936","DOIUrl":"10.1016/j.solidstatesciences.2025.107936","url":null,"abstract":"<div><div>This study investigates the electronic structure and bonding properties of rare-earth antimonide compounds, specifically Yb₄Sb₃ and La₄Sb₃, utilizing density functional theory calculations. The analysis reveals that Yb₄Sb₃ exhibits a predominantly ionic character whereas La₄Sb₃ displays a greater degree of covalent bonding. Moreover, the presence of divalent ytterbium leads to <em>p</em>-type conduction at high temperatures in Yb₄Sb₃. Conversely, La₄Sb₃ displays <em>n</em>-type conduction because of a larger electronic transfer from the rare-earth metal towards antimony. These findings provide valuable insights into the structural and electronic properties that govern the performance of <em>R</em>₄Sb₃ compounds, contributing to the development of advanced materials for thermoelectric energy conversion.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107936"},"PeriodicalIF":3.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchical Porous Carbon and Cobalt Silicate Nanosheets Derived from Rice Husks for High-Performance Hybrid Supercapacitors: A Strategy for High-Value Utilization","authors":"Yudan Zhang,&nbsp;Ziqi Cai,&nbsp;Jin Huang,&nbsp;Tao Mu,&nbsp;Xiangmou Ding,&nbsp;Yang Zhao,&nbsp;Yun Zeng,&nbsp;Qin Zuo,&nbsp;Wenhao Zeng,&nbsp;Li Liu,&nbsp;Jiangtao Zhao,&nbsp;Minglei Yan","doi":"10.1016/j.solidstatesciences.2025.107935","DOIUrl":"10.1016/j.solidstatesciences.2025.107935","url":null,"abstract":"<div><div>The effective utilization of agricultural waste rice husks has attracted wide attention. Herein, hierarchical porous carbon (MgPRHC) and cobalt silicate nanosheets (CSONS) are prepared using the one-to-two strategy from rice husks, with the organic biostructure and amorphous SiO₂ as precursors, respectively. Notably, the site-occupancy effect of MgO, produced from high-temperature pyrolysis of basic magnesium carbonate, effectively regulates the porous structure of MgPRHC. The specific capacitance of the MgPRHC electrode reaches 209.6 F g^-1 at a current density of 0.5 A g^-1 and maintains 95.6% after 10,000 charging/discharging cycles. Furthermore, the cobalt silicate material exhibits a two-dimensional nanosheet structure and excellent charge storage performance, which is synthesized from a 1.5 molar ratio of Co²⁺ to amorphous SiO₂ by a one-step hydrothermal reaction. Especially, the CSONS electrode exhibits the battery-type charge storage behavior, with a specific capacitance of 581.9 F g^-1 at 0.5 A g^-1. When paired with MgPRHC as the cathode, the CSONS//MgPRHC hybrid supercapacitor achieves a maximum energy density and power density of 34.8 Wh kg^-1 and 17.4 kW kg^-1, respectively. The capacitance retention retains at 96.6% after 10,000 continuous cycles of charging and discharging with minimal degradation of Coulombic efficiency. This work provides a technical route for the high-value utilization of rice husks and theoretical basis for biomass-based supercapacitors.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107935"},"PeriodicalIF":3.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A conductive hybrid hydrogel with high toughness and fatigue resistance for wearable sensor","authors":"Zhenglin Wang ,&nbsp;Zhenya Ge ,&nbsp;Lingyun Xu ,&nbsp;Zhihao Zhao ,&nbsp;Xiaohan Sun ,&nbsp;Qi Song ,&nbsp;Hongyang Liu ,&nbsp;Weijie Wang ,&nbsp;Zhe Chen ,&nbsp;Gongmo Xiang ,&nbsp;Nansong Zhu ,&nbsp;Xiangyu Jiang","doi":"10.1016/j.solidstatesciences.2025.107924","DOIUrl":"10.1016/j.solidstatesciences.2025.107924","url":null,"abstract":"<div><div>Hydrogel is a soft biomaterial with high water content that has attracted increasing attention due to its many advantages, such as excellent biocompatibility and shape controllability. However, conventional hydrogel materials have the defects of complex preparation process, low mechanical properties and poor stability, and it is still a great challenge to prepare hydrogels with excellent performance by a simple method. In this study, a method of solvent replacement by immersion was introduced to prepare polyvinyl alcohol/nickel ion (PVA/Ni²⁺) hydrogels with excellent performance. The hydrogel exhibits excellent tensile properties (elongation at break of 580 %), very high mechanical strength (1.1 MPa), excellent mechanical stability and fatigue resistance. Strikingly, this hydrogel also has good electrical conductivity, and strain sensors based on the hydrogel show an impressive upper detection (more than 300 %), with sensitivity to detect strain as low as 1 %, short response times, and the ability to accurately capture human movement behavior. This work achieves the combination of good mechanical properties and excellent sensing performance, which provides a good idea for the further development of flexible wearable sensing devices.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107924"},"PeriodicalIF":3.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and DFT characterization of argyrodite type Ag8SiS6 multidispersed powders and ceramics","authors":"Artem Pogodin ,&nbsp;Mykhailo Filep ,&nbsp;Tetyana Malakhovska ,&nbsp;Yaroslav Studenyak ,&nbsp;Olha Haleha ,&nbsp;Serhii Vorobiov ,&nbsp;Vladimir Komanicky ,&nbsp;Vasyl Vakulchak ,&nbsp;Vitaliy Bilanych ,&nbsp;Oleksandr Kokhan ,&nbsp;Ruslan Mariychuk","doi":"10.1016/j.solidstatesciences.2025.107925","DOIUrl":"10.1016/j.solidstatesciences.2025.107925","url":null,"abstract":"<div><div>Herein we present a detailed study of silver-based argyrodite Ag₈SiS₆ in the form of micro- and nanopowders and corresponding ceramics. The microcrystalline fraction has a particle size of 10–20 μm. The average particle size of nanopowders, as determined by SEM, are ∼140 nm (30 min of grinding) and ∼115 nm (60 min of grinding). XRD analysis confirms the formation of orthorhombic low temperature modification of Ag₈SiS₆ and the absence of degradation during the ball milling process. The nature of the optical transition and the change in the <em>E</em>_<em>g</em> with dispersion were determined by combining DFT calculations and diffuse reflectance spectroscopy. The microstructural analysis of ceramics indicates a presence of quite homogeneous ceramics (with an average crystallite size of ∼0.41 μm, ∼0.37 μm and ∼0.34 μm) and uniformly distributed microvoids. The compositional homogeneity of the ceramics was established by EDS. The electrical conductivity and activation energy of the studied ceramics were characterized by the impedance spectroscopy. The Ag₈SiS₆ ceramics are characterized by increase of ionic conductivity (up to 1.1 × 10⁻⁴ S/cm) and a decrease in its activation energy (to 0.234 eV) with decreasing of average crystallite sizes in ceramics. The influence of the recrystallization process and grain size on the electrical parameters of Ag₈SiS₆ ceramics is discussed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107925"},"PeriodicalIF":3.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}