Journal of Materials Science: Materials in Electronics最新文献

{"title":"Stable low energy dissipation and electromagnetic response characteristics of cobalt ferrite nanoparticles for UHF to C band applications","authors":"Manish Naagar,&nbsp;Sonia Chalia,&nbsp;Preeti Thakur,&nbsp;Atul Thakur","doi":"10.1007/s10854-025-14742-x","DOIUrl":"10.1007/s10854-025-14742-x","url":null,"abstract":"<div><p>This study explores the stable low energy dissipation and electromagnetic response characteristics of cobalt ferrite nanoparticles (CFNPs) for ultra-high frequency (UHF) to C band (300 MHz–6 GHz) applications. CFNPs were synthesized via the citrate precursor method, yielding a spinel cubic structure with crystallite sizes ranging from 38 to 70 nm, as confirmed by X-ray diffraction and Williamson-Hall analyses. Morphological evaluations using HRTEM revealed quasi-spherical nanoparticles with a mean particle size of ~ 42 nm and minimal lattice strain (<i>ε</i> = 0.00269). Magnetic measurements across 100–400 K demonstrated high thermal stability, with specific saturation magnetization peaking at 75.55 emu/g and coercivity increasing to 6248 Oe at 100 K, highlighting enhanced magnetic anisotropy. Electromagnetic performance evaluations revealed stable real permeability (~ 1.04–1.06) and low dielectric loss (0.04–0.051) across the frequency spectrum. Notably, the magnetic loss tangent (<i>tan δ</i>_<i>μ</i> = 0.075–0.085) and dielectric loss tangent (<i>tan δ</i>_<i>ε</i> = 0.007–0.009) emphasized minimal energy dissipation, critical for high-fidelity signal transmission. Applications such as radar, satellite communication, and EMI shielding can benefit from CFNPs’ low dissipation and reliable electromagnetic response under variable conditions. The research highlights CFNPs’ viability for advanced electromagnetic systems, demonstrating their ability to optimize signal integrity, energy efficiency, and thermal resilience. Future investigations may focus on refining synthesis techniques to control particle size distribution and exploring CFNP performance under dynamic electromagnetic environments, paving the way for sustainable technologies in defense, aerospace, and telecommunications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic removal of congo red dye using ZIF-8@BiVO4: impact of catalyst design and operational parameters","authors":"Deepak Senapati,&nbsp;Jaykishon Swain,&nbsp;Anulipsa Priyadarshini,&nbsp;Sugato Hajra,&nbsp;Hoe Joon Kim,&nbsp;Raghabendra Samantaray,&nbsp;Jatin Kumar Sinha,&nbsp;Rojalin Sahu","doi":"10.1007/s10854-025-14610-8","DOIUrl":"10.1007/s10854-025-14610-8","url":null,"abstract":"<div><p>Metal–organic frameworks (MOFs) are an exciting class of porous crystallized materials that have gained significant attention for applications in sustainable energy and environmental remediation. In this study, we explore the photocatalytic degradation of Congo Red (CR) dye using a novel composite material composed of ZIF-8 and BiVO₄ (BVO). The synergistic integration of ZIF-8 and BVO enhances charge transfer at the interface, effectively reducing the recombination of electrons and holes, thus boosting photocatalytic efficiency. Comprehensive characterization of the composites was performed using Powder X-ray diffraction (PXRD), Field emission scanning electron microscopy (FESEM), UV–visible diffuse reflectance spectroscopy (UV–Vis DRS), Thermogravimetric Analysis (TGA), and Fourier Transform Infrared spectroscopy (FT-IR). BET analysis revealed a high surface area of 1107.2 m²/g for ZIF-8 and 807.53 m²/g for the Z/BVO composite, contributing to enhanced photocatalytic activity. Notably, Z/BVO-25 demonstrated superior CR dye degradation efficiency, achieving 94.37% degradation under sunlight within 90 min, compared to 80.74% for ZIF-8 and 60.4% for BVO alone. The composite also exhibited excellent stability and reusability, retaining 86.3% of its initial efficiency after four cycles. Furthermore, this novel ZIF-8@BVO composite showed exceptional adsorption capability for the rapid removal of CR from aqueous solutions. In addition to demonstrating outstanding photocatalytic performance, we have discussed the underlying dye degradation mechanism, limitations, and future challenges associated with this composite material. This work presents a strategic approach to enhance photocatalytic performance by integrating MOFs with semiconductor materials, offering a promising solution for environmental remediation.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"U-shaped configuration design of host materials for solution-processed organic light-emitting diodes","authors":"Qiyin Ran,&nbsp;Xinjian Wang,&nbsp;Guimin Zhao,&nbsp;Yuheng Lou,&nbsp;Renjie Ji,&nbsp;Shuai Lv,&nbsp;Wenwen Tian,&nbsp;Wei Jiang,&nbsp;Yueming Sun","doi":"10.1007/s10854-025-14748-5","DOIUrl":"10.1007/s10854-025-14748-5","url":null,"abstract":"<div><p>The development of efficient host materials is crucial for improving the performance of thermally activated delayed fluorescence organic light-emitting diode. In this study, two U-shaped molecules (15CzCN, 24CzCN) and one rod-shaped molecule (14CzCN) were successfully designed and synthesized by tuning the connection sites of donor units. All three materials exhibited excellent thermal stability (T_d &gt; 400 °C) and high triplet energy (E_T &gt; 2.80 eV), demonstrating potential as host materials for green light emission. Furthermore, their photophysical properties were systematically investigated, with photoluminescence quantum yields (PLQYs) of 61.1 and 76.4% observed for 15CzCN and 24CzCN doped with 10% 4CzIPN, respectively, exceeding the 58.1% of 14CzCN. In device performance tests, the solution-processed device with 10% 4CzIPN as the dopant and 24CzCN as the host achieved a maximum external quantum efficiency (EQE_max) of 10.09%. This work offers new insights into the design and development of host materials for future applications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-025-14748-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hand drawn capacitive proximity/touch sensors","authors":"Vinit Srivatava,&nbsp;Abhay Singh Thakur,&nbsp;Rahul Vaish,&nbsp;Bharat Singh Rajpurohit,&nbsp;Nasser S. Awwad,&nbsp;Hala A. Ibrahium,&nbsp;Imen kebaili,&nbsp;Imed Boukhris","doi":"10.1007/s10854-025-14591-8","DOIUrl":"10.1007/s10854-025-14591-8","url":null,"abstract":"<div><p>This study presents an innovative approach to developing capacitive touch and proximity sensors by utilizing a pencil to draw interdigitated capacitors (IDCs) on non-conductive construction materials such as cement, cement fiberboard, stone, and brick. Moving beyond flexible substrates like paper, this work focuses on rigid materials, achieving a linear resistance of approximately 22 Ω/cm on cement. The sensors demonstrate high responsiveness making them suitable for real-time Human-Building Interaction (HBI) applications. Additionally, the sensor exhibits a sensitivity of about 0.04 pF/cm in proximity sensing, highlighting its effectiveness in multi-sensory applications. This low-cost, eco-friendly fabrication method has significant potential to transform HBI use cases by offering a practical, durable solution for constructing touch-sensitive walls and other interactive surfaces.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carica papaya seed− derived functionalized biochar: an environmentally friendly and efficient alternative for dye adsorption","authors":"Francisco J. Cano,&nbsp;Rocío Sánchez−Albores,&nbsp;A. Ashok,&nbsp;J. Escorcia−García,&nbsp;A. Cruz−Salomón,&nbsp;Odín Reyes−Vallejo,&nbsp;P. J. Sebastian,&nbsp;S. Velumani","doi":"10.1007/s10854-025-14725-y","DOIUrl":"10.1007/s10854-025-14725-y","url":null,"abstract":"<div><p>Biochar is emerging as a sustainable material for addressing critical environmental challenges, including water pollution and carbon sequestration. In this study, biochar derived from <i>papaya seed</i> biomass via slow pyrolysis was investigated for its efficacy in removing organic dyes from aqueous solutions. Both biochar and chemically functionalized biochar were comprehensively characterized using XRD, FTIR, XPS, BET surface area analysis, and SEM/EDS to elucidate their structural, morphological, and surface properties. The adsorption performance was assessed using methylene blue (MB), rhodamine B (RhB), malachite green (MG), and methyl orange (MO) as model contaminants, with particular attention to adsorption kinetics and equilibrium behavior. The unmodified biochar exhibited moderate adsorption capacities, primarily driven by π − π interactions and a limited number of functional groups, achieving removal efficiencies of 55.5, 97.8, and 12.9% for MB, MG, and RhB, respectively, while MO showed negligible adsorption. Remarkably, chemical functionalization with KMnO₄ significantly enhanced biochar performance, increasing surface area and functional group diversity. This modification enabled the complete removal (100%) of MB and MG within six minutes, alongside substantial improvements for RhB and MO, achieving 100 and 88% removal, respectively. Adsorption kinetics followed a pseudo‒second‒order model (<i>R</i>² &gt; 0.99), indicating chemisorption as the dominant mechanism, while Langmuir isotherms (<i>R</i>² = 0.993 − 0.999) suggested monolayer adsorption. Additionally, the intraparticle diffusion model highlighted the synergistic contributions of surface interactions and pore diffusion to overall adsorption efficiency. These findings establish chemically functionalized papaya seed biochar as a highly efficient, low‒cost adsorbent for dye removal, underscoring its potential for environmental remediation. The innovative utilization of papaya seed biomass not only adds value to agricultural waste but also advances sustainable water treatment strategies, reinforcing its significance in environmental science and engineering.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-025-14725-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-dependent current conduction properties and barrier inhomogeneity of Au/methylene blue (MB)/n-Ge heterostructure","authors":"D. Mallikarjuna,&nbsp;A. Ashok Kumar,&nbsp;V. Janardhanam,&nbsp;V. Rajagopal Reddy","doi":"10.1007/s10854-025-14717-y","DOIUrl":"10.1007/s10854-025-14717-y","url":null,"abstract":"<div><p>The electrical properties of Au/methylene blue (MB)/n-Ge heterostructure were investigated in a wide temperature range from 125 to 400 K. The device parameters such as barrier height, ideality factor and series resistance were determined using the thermionic emission (TE) model and Cheung’s method. The barrier height (<i>Φ</i>_b) and ideality factor (<i>n</i>) values of the Schottky contact were determined from the current–voltage (<i>I</i>–<i>V</i>) measurements and found to be 0.29 eV and 2.71 at 125 K and 0.93 eV and 1.04 at 400 K, respectively. In the presence of inhomogeneity at the metal–semiconductor contact, the barrier height was found to be decreased and the ideality factor increased with the decrease of temperature. From Cheung’s plot, the series resistance (<i>R</i>_s) was found to be reduced with the increase in temperature. Barrier inhomogeneity has been elucidated using the thermionic emission theory based on the assumption of Gaussian distribution of barrier heights. However, the divergence in Schottky barrier heights of Au/MB/n-Ge heterostructure evaluated from <i>I</i>–<i>V</i> measurements indicates deviation from the TE theory. The conventional Richardson plot between ln(<i>I</i>_o/<i>T</i>²) vs. 1000/<i>T</i> gives an activation energy of 0.31 eV and Richardson constant (<i>A</i>^*) of 1.14 × 10^–9 Acm⁻² K⁻². The modified Richardson plot evaluated by assuming the Gaussian distribution of <i>Φ</i>_b shows an enhanced activation energy of 1.15 eV and <i>A</i>^* of 209.28 Acm⁻² K⁻² which is close to the theoretical value of n-Ge. Current conduction mechanisms of the Au/MB/n-Ge contact in a wide temperature range are resolved into four linear regions (Region-I to Region-IV) with different slope factors. This shows that the interfacial layer (MB) significantly influences the electrical properties of the Au/n-Ge contacts measured in a wide temperature range. The interface state density distribution over the energy below the conduction band of the n-Ge is also studied in the temperature range from 125 to 400 K.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-phase Fe3O4@C@MnO heterostructure for lithium-ion batteries: synergistic effects and electrochemical mechanisms","authors":"Weibo Wu,&nbsp;Guoyao Chen,&nbsp;Wanqing Chang,&nbsp;Yi Zhang,&nbsp;Xianguang Zeng,&nbsp;Xing Li,&nbsp;Shuliang Wang,&nbsp;Dinghan Xiang,&nbsp;Xiaoyan Zhang","doi":"10.1007/s10854-025-14723-0","DOIUrl":"10.1007/s10854-025-14723-0","url":null,"abstract":"<div><p>The practical application of Fe₃O₄ in lithium-ion batteries is limited by significant volume expansion (&gt; 200%) and severe particle aggregation during lithiation/delithiation, which together lead to rapid capacity decay due to comminution-induced loss of electrical contact and slow lithium-ion diffusion kinetics. To address these challenges, we designed a three-phase Fe₃O₄@C/MnO nanocomposite using an integrated hydrothermal precipitation strategy followed by controlled thermal treatment. The initial discharge capacity of the Fe₃O₄@C/MnO negative electrode at 50 mA g⁻¹ was 1322.90 mAh g⁻¹, which exceeded the theoretical capacity obtained through the interfacial lithium storage mechanism. What's more, after 170 cycles at 200 mA g⁻¹, the capacity can still be maintained at 1042.26 mAh g⁻¹, which is a capacity retention rate of 125.37% compared with the first cycle capacity. This excellent performance stems from the heterogeneous interfacial engineering stabilization and enhanced reaction kinetics of the active materials. The carbon matrix limited the volume change of Fe₃O₄ while maintaining the structural integrity, and the compressive stress generated by MnO nanoparticles alleviated the aggregation of Fe₃O₄. Finally, the built-in electric field generated by the charge redistribution at the interface accelerates the ion/electron transport. Thus, Fe₃O₄@C/MnO demonstrates significant potential as an anode material for lithium-ion batteries.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of Er-doped WO3 thin films as a potential candidate for the detection of ammonia at room temperature","authors":"R. Balaji,&nbsp;Pandurangan Mohan,&nbsp;B. Prakash,&nbsp;V. Ganesh","doi":"10.1007/s10854-025-14645-x","DOIUrl":"10.1007/s10854-025-14645-x","url":null,"abstract":"<div><p>In this work, we report on pure and Er-doped (1, 2, 3, 4, and 5 wt.%) WO₃ thin films prepared via the nebulizer spray pyrolysis technique. The microcrystalline structure, surface morphology, optical properties, and gas-sensing characteristics of the films were studied. XRD analysis revealed that the prepared samples exhibited hexagonal crystal structures, with an increase in grain size from 48 to 63 nm for the WO₃:Er2% thin film. FESEM analysis showed a nanofibrous network morphology, with increased porosity and reduced nanofiber size observed in the WO₃:Er2% film. Photoluminescence (PL) spectra demonstrated six emission peaks at 360, 400, 420, 445, 475, and 520 nm for both the pristine and WO₃:Er films, with maximum PL emission noted for the 2% Er doped sample. Optical measurements indicated a decrease in transmission spectra from pure to WO₃:Er2%, with the optical bandgap decreasing from 3.2 eV to 2.9 eV for the WO₃:Er2% film. Key gas-sensing parameters, including gas responsivity, response and recovery time, were measured as 368, 5.2 s, and 6.7 s, respectively, for the WO₃:Er2% thin film, confirming its strong gas-sensing capabilities. This study demonstrates that WO₃:Er2% thin film is an efficient, fast-responding gas sensor, developed using the simple and cost-effective nebulizer spray pyrolysis method.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and computational investigations on 4-acetyl pyridine fumaric acid single crystal for nonlinear optical applications","authors":"S. Keerthi Gopakumar,&nbsp;S. Vinu,&nbsp;Y. K. Pratheesha Mol,&nbsp;S. Sindhusha,&nbsp;R. Sheela Christy,&nbsp;G. Vinitha","doi":"10.1007/s10854-025-14699-x","DOIUrl":"10.1007/s10854-025-14699-x","url":null,"abstract":"<div><p>An organic NLO single crystal, 4-acetylpyridine fumaric acid (4APFA), was synthesized at room temperature using the slow evaporation method, and single crystal XRD analysis confirmed that the grown crystal is triclinic with a centrosymmetric space group P<span>(overline{1 })</span>. Using the density functional theory (DFT) approach, experimental results were correlated with theoretical values. The presence of hydrogen bonding interactions that stabilize the molecular structure was understood through NBO analysis. HOMO–LUMO analysis predicts the higher stability and reactivity of the molecule. The major factor contributing to overall crystal packing arises from O–H interactions (39.4%) due to the presence of N–H…O hydrogen bonding interactions. FT-IR and FT-Raman spectroscopy were used to identify different functional groups present in 4-acetyl pyridine fumaric acid. UV-visible spectral analysis of 4APFA shows high optical transmittance throughout the visible region. The material’s blue-band emission was identified through fluorescence spectral analysis. TG/DTA investigation revealed that 4APFA is thermally stable up to 160 °C. The grown 4APFA crystal exhibits excellent atomic packing and good mechanical stability, making it suitable for device fabrication. The higher third-order susceptibility of 4.526 × 10^–6 esu and a nonlinear refractive index value of 4.24<b> × </b>10^–9 cm²/W indicate that the grown 4APFA crystal demonstrates superior NLO behavior, making it highly promising for the design and manufacturing of optical power-limiting devices.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structure and dielectric properties of 0.70 Ba 1-x La2x/3TiO3-0.30 Bi (Mg0.5 Ti0.5) O3 ceramics","authors":"Shekhar Kumar,&nbsp;Md. Kashif Shamim,&nbsp;Divya Kumari,&nbsp;Seema Sharma","doi":"10.1007/s10854-025-14708-z","DOIUrl":"10.1007/s10854-025-14708-z","url":null,"abstract":"<div><p>In the present work, we synthesized La-doped 0.70 Ba _<i>1-x</i> La_<i>2x/3</i>TiO_<i>3</i>-0.30 Bi (Mg_<i>0.5</i> Ti_<i>0.5</i>) O₃ ceramics (where <i>x</i>-0.02, 0.04, 0.06, 0.08) hereby designated as BLT-BMT by conventional solid-state sintering method. The emphasis was to evaluate the structure and dielectric properties of BLT-BMT as a function of La concentration. Reitveld refinement of the structure confirmed single-phase perovskite structure with pseudo-cubic symmetry. Incorporation of La_<i>2</i>O_<i>3</i> into the ceramic matrix resulted in the decrease of lattice parameters and cell volumes, this infers that long-range ordering has been destroyed in the samples. This statement is further supported by Raman measurements. Shift in the dielectric peaks was observed towards higher-temperature side with increasing frequency, and this may be attributed to the effects induced by La³⁺ incorporation. This also improves the temperature stability of dielectric permittivity which in turn supports the relaxation behavior present in all the compositions. Dielectric diffusivity of the samples was found to lie between 1.52 and 1.67, while the activation energy was found to increase from 0.25 to 0.42 eV with increase in La concentration<b><i>.</i></b> All the samples exhibit Negative temperature Coefficient of Resistance (NTCR) behavior. Conductivity increases with increasing temperature for all the compositions.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 11","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}