Journal of Materials Science: Materials in Electronics最新文献

{"title":"Tailoring ferromagnetic and dielectric properties in ZnO via (Eu, Co) doping for spin-based electronic devices","authors":"Rajwali Khan,&nbsp;Khaled Althubeiti,&nbsp;Sattam Al Otaibi,&nbsp;Sherzod Abdullaev,&nbsp;Nasir Rahman,&nbsp;Akif Safeen,&nbsp;Shahid Iqbal","doi":"10.1007/s10854-025-14861-5","DOIUrl":"10.1007/s10854-025-14861-5","url":null,"abstract":"<div><p>The development of doped materials is essential for spin-related storage electronics, especially new magnetic nanoparticles that have 100% spin polarization at ambient temperature. This characteristic is seen in several oxide-based semiconductor compounds. In this work, we examine the optical, dielectric, magnetic, and structural characteristics of (Eu, Co) co-doped ZnO nanoparticles (NPs) that were created using the sol–gel technique. The effective integration of Eu and Co ions into the ZnO lattice is confirmed by Fourier Transform Infrared Spectroscopy (FTIR), as shown by distinctive vibrational modes (616, 781, 994, 1112, 1648, 2352, 3502, and 2352 cm⁻¹) and absorption bands. Significant changes in the electronic structure are shown by the consistent variation in bandgap energy with increasing dopant concentration (3.35 eV, 3.36 eV, 3.39 eV, and 3.47 eV for pure ZnO, 5% Eu-doped ZnO, and (Eu, Co) co-doped ZnO (1 and 3%)), as revealed by UV–Vis spectroscopy and Tauc plot analysis. Co-doping affects the dielectric constant (ε_r), dielectric loss (ε″), and AC conductivity (σ_a.c.), according to dielectric measurements. Space-charge polarization (SCP) and rotational dielectric polarization (RDP) are responsible for the polarization effects. According to the frequency-dependent study, co-doping improves the material’s dielectric qualities, which makes it appropriate for energy storage purposes. Room-temperature ferromagnetism (RTFM) in co-doped ZnO is demonstrated by magnetic characterization using magnetization-field (M-H) loops, field-cooled (FC), and zero-field-cooled (ZFC) measurements. A highest value of 0.651 emu/mol at 176 Oe for 5% Eu and 5% Co-co-doped ZnO. An adjustable Curie temperature (Tc) between 328 and 390 K is confirmed by Arrott plots, which also corroborate the observed magnetic behavior, which is caused by carrier-mediated exchange, binding magnetic polaron (BMP) interactions, and defect-induced magnetism. According to our research, ZnO functional characteristics may be tailored by regulated Eu and Co co-doping, which makes it a viable option for spintronic, dielectric, and optoelectronic devices.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919225","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":"Highly effective room-temperature ethanol gas-sensing performance of lanthanum-doped zinc oxide thin films","authors":"Gökhan Algün,&nbsp;Namık Akçay","doi":"10.1007/s10854-025-14862-4","DOIUrl":"10.1007/s10854-025-14862-4","url":null,"abstract":"<div><p>This paper reports the room-temperature ethanol gas-sensing performance of lanthanum (La)-doped zinc oxide (ZnO) nanostructured thin films and the La dopant concentration effects on this performance. ZnO nanoparticles, both undoped and La-doped, were produced through the sol–gel process, with La concentrations set at 0, 1, 2, 3, and 5 mol%. The production of thin films was carried out by the dip-coating technique on soda-lime glasses. X-ray diffraction patterns confirmed that the structure of the prepared films was hexagonal wurtzite and the predominant orientation was (002). The film surfaces, consisting of nanosized grains and pores exhibiting an evenly distributed and homogeneous morphology, were observed by scanning electron microscopy. Energy-dispersive X-ray analyses revealed the zinc, lanthanum, and oxygen contents of the produced films and their stoichiometric ratios. The room-temperature ethanol-sensing performances of the fabricated sensors were determined by measuring the electrical resistance changes at various ethanol concentrations (10, 25, 50, and 100 ppm). La doping significantly improved the ethanol-sensing performance of ZnO. 1 mol% La-doped ZnO exhibited the most effective room-temperature ethanol gas-sensing performance, and therefore, 1 mol% La was identified as the optimal doping concentration. Its sensing response was measured to be 117.1, with a response/recovery time of 24 s/28.6 s. This study revealed that La-doped ZnO nanostructured thin films are a remarkable material for improving highly effective ethanol gas sensors operating at room temperature.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-025-14862-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925484","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":"Magnetoimpedance effect and magnetic properties in FINEMET/CoFeSiB composite ribbons","authors":"Yongbin Guo,&nbsp;Dao Wang,&nbsp;Yizhang Li,&nbsp;Renpeng Xing,&nbsp;Zhaoxia Xu,&nbsp;Xiuwei Yang,&nbsp;Zhongmin Wang,&nbsp;Zhenjie Zhao","doi":"10.1007/s10854-025-14871-3","DOIUrl":"10.1007/s10854-025-14871-3","url":null,"abstract":"<div><p>The systematic investigation into the impact of CoFeSiB film on the structural, magnetic properties, magneto-impedance (MI) effect, and magnetic interactions of FINEMET ribbon reveals significant enhancements. By strategically applying a CoFeSiB coating, the transverse magnetic anisotropy of the FINEMET ribbon, leading to markedly improved MI and soft magnetic characteristics. This modulation is driven by the intricate magnetic interactions between the CoFeSiB film and the FINEMET ribbon. Through precise control of the CoFeSiB film thickness, the critical role these interactions play in shaping magnetic properties and the MI effect. Notably, this approach achieves a substantial increase in the MI effect from 30% for uncoated ribbon tape to 65%. These findings offer valuable theoretical insights and practical guidelines for optimizing the magnetic properties and giant magneto-impedance (GMI) effects in soft magnetic materials.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-025-14871-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925517","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":"Outstanding improvement in ultraviolet photodetection with DyCrO3/n-Si heterojunction device on manganese substitution","authors":"Manjeet Rani,&nbsp;Kuldeep Singh,&nbsp;Rajendra C. Pawar,&nbsp;Neeraj Panwar","doi":"10.1007/s10854-025-14850-8","DOIUrl":"10.1007/s10854-025-14850-8","url":null,"abstract":"<div><p>The influence of manganese (Mn) substitution on the ultraviolet (UV) photodetection of DyCrO₃/<i>n</i>-Si device has been investigated. DrCr_1-xMn_xO₃ (x = 0, 0.2, 0.5) thin films were deposited on <i>n</i>-type silicon substrate utilizing the spin-coating method. XRD patterns confirmed the substitution of Mn-ions at Cr-site in DyCrO₃ lattice. Current voltage (<i>I–V</i>) characteristics of the fabricated devices exhibited a diode-like behaviour. Moreover, <i>I–V</i> behaviour of the films followed the trap-assisted tunnelling (TAT) and space-charge-limited conduction (SCLC) mechanisms at lower and higher electric fields, respectively. Transient photocurrent measurements were performed on the fabricated films by exposing them to UV radiation of wavelengths 365 and 254 nm and an on/off cycle of 20 s. Notably, the UV sensitivity increased from 142% for DyCrO₃ (DCO) to 429% for DyCr_0.5Mn_0.5O₃ (DCMO50) heterojunction device. The produced devices exhibited a significant increase in responsivity from 7.81 × 10^–4 mA/W to 1.01831 mA/W with a corresponding increase in Mn concentration from 0% to 50 at. %. The fabricated devices also demonstrated an enhancement in detectivity and external quantum efficiency (EQE) values. The detectivity increased from 0.807 × 10¹⁰ cmHz^1/2/W (0% Mn) to 1.11 × 10¹⁰ cmHz^1/2/W (50% Mn), while EQE values arose from 2.65 × 10^–4% (0% Mn) to 0.34% (50% Mn). The increase in Mn concentration also led to an increment in the linear dynamic response (LDR) value, elevating it from 7.47 dB to 10.36 dB. The significant improvement in UV detection parameters with Mn substitution is advantageous in designing UV photodetectors with enhanced efficiency.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925516","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":"Developing solid polymer electrolytes-based Nd3+/V2O5/ethyl cellulose for optoelectronic devices","authors":"Adel M. El Sayed,&nbsp;Faisal Katib Alanazi","doi":"10.1007/s10854-025-14842-8","DOIUrl":"10.1007/s10854-025-14842-8","url":null,"abstract":"<div><p>Solid electrolytes based on biopolymer nanocomposites have gained increased interest in modern applications in environment-friendly optoelectronics, energy storage, and food and pharmaceutical industries. In this study, films of V₂O₅-doped ethyl cellulose (EC) modified with NdCl₃ were prepared by facile solution casting and investigated for their structural, thermal, IV characteristics, and optical properties. X-ray diffraction revealed the semicrystalline nature of EC and confirmed the incorporation of V₂O₅ nanoparticles (NP) inside the polymer matrix. Fourier transform infrared spectra indicated the interaction/complexation between the fillers and the EC reactive groups. Scanning electron microscopy showed the uniform distribution of NP and investigated the morphology of the films’ surface and cross-section. The thermal analyses were used to study the impact of V₂O₅ NP and NdCl₃ on the films' stability and transition temperatures. Non-linear IV characteristic curves were recorded, and the films displayed non-ohmic behavior. The optical analyses (UV-Vis-NIR) showed that EC is highly transparent (~ 92%), which decreased with doping. The bandgap of the films shrank from ~ 5.2 eV to 4.8 eV upon 1.0 wt % V₂O₅ NP doping and then reduced to 3.5 eV when modified with NdCl₃. The effect of fillers on the optical parameters (the extinction coefficient, refractive index, optical conductivity, and optical dielectric loss) are reported. The results indicate that the prepared materials are the best candidates for optoelectronic applications, and devices work at room temperature and elevated temperatures.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913951","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":"Sulfur-doped lithium phosphate glasses ceramics: a detailed exploration of sulfur on the structural, optical, and electrical properties","authors":"Reda Khalil,&nbsp;Talaat A. Hameed,&nbsp;Fathy Salman","doi":"10.1007/s10854-025-14759-2","DOIUrl":"10.1007/s10854-025-14759-2","url":null,"abstract":"<div><p>The inclusion of sulfate anions in an appropriate glass matrix has proven to enhance the physical and chemical properties and widen the application of the glass system. In this context, the impact of minor sulfur dopants (0 to 2 mol%) on the structural, optical, and electrical properties of lithium phosphate glasses has been investigated in detail. 3(Li₂O)-y(S)-(1-y) PO₃ (y = 0.0, 1, 1.5, and 2 mol %.) ceramic glasses were synthesized using the melt-quenching technique. The density showed a sulfur-related decrement, whereas the molar volume increased which can be ascribed to the formation of non-bridging oxygens. The structural features of the sulfur-doped lithium phosphate glass was studied by X-ray diffraction (XRD), which established the formation of glass–ceramic nanocomposites. Moreover, the formation of LiPO₃ and LiSO₄ phases was confirmed by XRD. The Fourier transformer infrared spectroscopy (FTIR) represented sharp peaks at 896 cm⁻¹ related to the stretching vibration of P–O–P groups which exhibits a clear shift with the addition of sulfur. The optical bandgap increased from 3.8 to 4.27 eV as the sulfur content was increased from 0.0 to 2.0 mol %. as established by applying Kubelka -Munk combined with Tauc’s relations. Also, the bandgap dependence of refractive index was estimated and discussed by different Moss, Herve, Reddy, and Kumar models. The complex impedance analysis revealed non-Debye-type dielectric relaxation behavior. The ac conductivity exhibited an increase with temperature according to the Arrhenius law, with a double activation energy for the conduction process. As the sulfur content increased, the variation in conductivity and high-temperature activation energy suggested a transition from a predominantly polaronic conductive regime to an ionic conductive regime at approximately 1.5 mol% of sulfur in lithium phosphate glasses. The frequency-dependent behavior of electric conductivity followed a modified power law relation, σ_ac(ω) = σ_dc(0) + A ω^s1 + B ω^s2, where s &gt; 1 and constant value with varying temperature. The hopping mechanism was identified as the dominant electrical transport process in the system. The relaxation character of the frequency and temperature dependence of the electrical modulus, as well as the dielectric loss parameters, was evident. These findings suggest that sulfur-doped lithium phosphate glasses have potential applications in various fields, including solid-state batteries, optoelectronics, and photonics.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-025-14759-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913950","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":"Influence of chemical purification methodologies on the Bridgman growth of trans-stilbene (TSB) crystal, and feasibility studies for X-ray imaging and neutron/gamma discrimination applications","authors":"Anjan Pal,&nbsp;Sujan Kar,&nbsp;C. Debnath,&nbsp;S. Raj Mohan,&nbsp;Rijul Roychowdhury,&nbsp;Ashish K. Agrawal,&nbsp; Sonu,&nbsp;Mohit Tyagi,&nbsp;Sunil Verma","doi":"10.1007/s10854-025-14845-5","DOIUrl":"10.1007/s10854-025-14845-5","url":null,"abstract":"<div><p>Growth of large size, good optical quality, technologically important organic single crystal of trans-Stilbene (TSB) by Bridgman technique has been reported. To evaluate the influence of chemical purity on the growth process, multiple growth runs were conducted, each using starting materials of varying purity levels. A crack-free, transparent, and colorless crystal was grown using chemical obtained through a meticulous double-purification process involving recrystallization and zone melting. The grown crystal was precisely cut and polished to obtain elements for experimental investigations, targeting applications in X-ray imaging and Pulse Shape Discrimination (PSD). Additional plates were prepared for investigations of phase purity by powder XRD, crystalline perfection by high resolution X-ray diffraction (HRXRD), and optical quality using birefringence interferometry and UV–Vis transmission studies, all pointing towards low defects, and hence good optical quality. The crystal’s optical energy gap was determined to be 3.47 eV by Tauc plot. Photoluminescence (PL) studies using 325 nm excitation revealed a broad emission, with a prominent peak around 380 nm. Time Correlated Single Photon Counting (TCPCS) studies were performed to quantify the decay characteristics of the crystal. The analysis reveals dual decay times of 1.98 ns and 4.14 ns. Importantly, strong scintillation output was measured using X-rays from Indus-2 synchrotron radiation beamline, enabling the resolution of fine object features of as small as 100 µm, highlighting its suitability for X-ray imaging. Furthermore, PSD characterization performed using Am-Be radioactive source confirmed the crystal’s potential for neutron/gamma (n/γ) discrimination applications, making it a promising candidate for advanced technological applications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-025-14845-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918987","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":"Improved electrical properties of bismuth ferrite ceramics based on the synergistic effect of a rapid quenching method and Pr substitution","authors":"Wei Cai,&nbsp;Zhiqiang Liu,&nbsp;Wei Wang,&nbsp;Xiuqi Li,&nbsp;Jiali Tang,&nbsp;Gang Chen,&nbsp;Rongli Gao,&nbsp;Xiaoling Deng,&nbsp;Chunlin Fu","doi":"10.1007/s10854-025-14851-7","DOIUrl":"10.1007/s10854-025-14851-7","url":null,"abstract":"<div><p>BiFeO₃ (BFO) as a promising lead-free ferroelectric material has attracted significant attention due to its unique electrical properties and potential applications in sensors and memory devices. However, the high leakage current and difficulty in obtaining a pure phase for BFO ceramics still significantly limit its practical application. Herein, the introduction of Pr³⁺ at the A sites and the rapid quenching are synergistically applied to achieve the single-phase Bi_1−<i>x</i>Pr_<i>x</i>FeO₃ ceramics and improve its electrical properties. The effects of Pr³⁺ on the microstructure, dielectric properties, and ferroelectric properties of Bi_1−<i>x</i>Pr_<i>x</i>FeO₃ ceramics were systematically studied. The results show that the Bi_1−<i>x</i>Pr_<i>x</i>FeO₃ (<i>x</i> = 0–0.075) ceramics prepared by the rapid quenching method are primarily rhombohedral phases, and the introduction of Pr³⁺ significantly inhibits the formation of impurity phase. The partial substitution of more stable Pr³⁺ for Bi³⁺ not only refines the grain size of Bi_1−<i>x</i>Pr_<i>x</i>FeO₃ ceramics but also significantly reduces their leakage current density. Moreover, the introduction of Pr³⁺ also lead to the increased remnant polarization of BiFeO₃ ceramics. The synergistic effect of rapid quenching and Pr³⁺ doping plays a critical role in improving the electrical properties of BiFeO₃ ceramics.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908802","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":"BiOI/Bi5O7I solid solution with S-scheme heterojunction as a high-efficiency photocatalyst for formaldehyde and Congo red degradation","authors":"Gang Yan,&nbsp;Qi Zhao,&nbsp;Ao Rong,&nbsp;Xuzheng Cao,&nbsp;Rui Wang,&nbsp;Cuiwei Yin,&nbsp;Baolin Yang,&nbsp;Hongfei Shi","doi":"10.1007/s10854-025-14852-6","DOIUrl":"10.1007/s10854-025-14852-6","url":null,"abstract":"<div><p>One effective strategy to eliminate formaldehyde (HCHO) pollution is the development of S-scheme heterojunction photocatalysts. Herein, the BiOI/Bi₅O₇I solid solution with S-scheme heterojunction photocatalyst was successfully prepared by calcining BiOI at 370 °C &lt; T &lt; 450 °C. Under visible light (λ &gt; 400 nm), the removal rate of HCHO (0.16 mg/L) was 76% when 450-BiOI/Bi₅O₇I was irradiated for 60 min. The HCHO degradation rate constants of 450-BiOI/Bi₅O₇I (k = 0.0236 min⁻¹) were 4.1 and 3.8 times greater than those of pristine BiOI (k = 0.0058 min⁻¹) and Bi₅O₇I (k = 0.0063 min⁻¹). 450-BiOI/Bi₅O₇I also has good photodegradation performance for Congo red (CR), and the degradation rate reaches 90% after 180 min. The significant increase in photocatalytic performance is not only attributed to the uniformly distributed nanostructures but also to the S-scheme heterojunction. The S-scheme heterojunction collectively improves photocatalytic performance through its unique energy band structure matching, charge transfer mechanism, and synergistic interaction with the internal electric field (IEF). In addition, the formation of solid solutions can promote the efficiency of visible light harvesting and separation of photogenerated carriers, and endow the photogenerated holes with sufficient oxidation capacity. Therefore, BiOI/Bi₅O₇I solid solution with S-scheme heterojunction photocatalysts not only possess outstanding photocatalytic performance but also exhibit good photostability, which makes them promising photocatalysts for visible light environmental applications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913867","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":"Impact of cobalt doping on the properties of zinc ferrite (CoxZn1-xFe2O4)","authors":"Muhammad Numan Nawaz,&nbsp;Uzma Ghazanfar,&nbsp;Weifeng Yuan,&nbsp;Hassan Wahab,&nbsp;Osama Tariq Satti,&nbsp;Sadaf Bashir Khan","doi":"10.1007/s10854-025-14770-7","DOIUrl":"10.1007/s10854-025-14770-7","url":null,"abstract":"<div><p>The intercalation of Cobalt (Co) into Zinc (Zn) ferrite (Fe₂O₄₎ is a contemporary composite material with significant magnetic and structural characteristics. Our study investigates the Mössbauer, structural, and magnetic properties of Co-substituted ZnFe₂O₄, synthesized via microwave hydrothermal method. A series of polycrystalline samples were prepared by modulating the cobalt concentration (0.1, 0.4, 0.7, and 0.9) in zinc ferrite. We discovered a profound impact on lattice parameters and magnetization. Scanning electron microscopy (SEM) shows a uniform surface morphology with an accumulation of particles, including particle clustering. The X-ray diffraction (XRD) data confirm the single-phase cubic spinal structure. No additional impurities or subordinate phases were detected. UV-visible spectra show a slight shift in Co-doped ZnFe₂O₄ samples (2.60eV to 2.30eV) in optical bandgap with the increment of cobalt due to generating extra energy state. Fourier transform infrared (FTIR) spectroscopy is used to identiy functional group bending modes at specific wavelengths. Mössbauer spectroscopy analysis confirms the presence of cations that selectively inhabit a particular site of lattice, indicative of the preferential distribution of these ions within the crystal structure. Incorporating cobalt ions through doping significantly affects the material behavior, leading to changes in magnetic susceptibility, optical absorption spectra, and electrical conductivity.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 13","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913868","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}