Applied Physics A最新文献

{"title":"Predicting the magnetocaloric properties in La0.5Sm0.2Sr0.3Mn1-xCrxO3 (0≤x≤0.20) manganites through critical behavior","authors":"Khouloud Abdouli,&nbsp;Mohamed Hsini,&nbsp;Olfa Messaoudi,&nbsp;Latifah Alfhaid,&nbsp;Selma Abdelrahman","doi":"10.1007/s00339-024-07979-6","DOIUrl":"10.1007/s00339-024-07979-6","url":null,"abstract":"<div><p>This study explores the critical behavior and magnetocaloric properties of La_0.5Sm_0.2Sr_0.3Mn_1-xCr_xO₃ manganites, with a focus on the novel effect of Cr doping (x = 0, 0.1, 0.15, and 0.2) on magnetic phase transitions and magnetocaloric response. Unlike previous works, this study provides new insights by revealing how chromium substitution alters the critical exponents γ and β, using modified Arrott plots (MAPs) and the Kouvel–Fisher method, resulting in a deviation from mean-field theory and suggesting a shift in the universality class. These findings underscore the novel impact of Cr on magnetic ion interactions and lattice structure. Furthermore, this research uniquely examines the effect of Cr doping on the magnetocaloric effect (MCE), showing that increasing Cr content tailors the magnetic entropy change − ∆S_M(T) and the Temperature-Averaged Entropy Change (TEC), enhancing the potential of these materials for magnetic refrigeration. This work significantly contributes to the optimization of manganites for applications in magnetic cooling, spintronics, and temperature-sensitive sensors.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing wear and corrosion resistance of AISI410 stainless steel in simulated seawater environments through PVD sputtering of TiCrN and CrSiN coatings","authors":"Vijayasarathi Prabakaran,&nbsp;Mohanakrishnan M,&nbsp;Karthikeyan M,&nbsp;Ram Ragul V","doi":"10.1007/s00339-024-07934-5","DOIUrl":"10.1007/s00339-024-07934-5","url":null,"abstract":"<div><p>To improve the tribological performance of SS410 steel in seawater, TiCrN and CrSiN coatings were deposited using PVD sputtering and thoroughly analyzed. The CrSiN coating, which exhibits higher hardness and better corrosion resistance, achieved a protective efficiency of 83.70%, surpassing the TiCrN coating by 14% according to anodic polarization tests. Friction and wear properties were evaluated with a ball-on-disk tribometer in artificial seawater, following ASTM G77 standards. The CrSiN coating demonstrated lower friction coefficients and wear rates—1.362 × 10⁻⁶ mm³/N-m compared to 2.632 × 10⁻⁶ mm³/N-m for TiCrN at a 4N load—highlighting the positive impact of Si addition. These coatings markedly enhance the tribocorrosion resistance of AISI 410 steel, addressing issues in marine engine components, extending their service life, and ensuring reliable performance in severe marine conditions. SEM analysis of the uncoated SS410 surface revealed pits and deep grooves.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy storage performance and electrocaloric effect of Zr doped BaTiO3-based lead-free ferroelectric ceramics","authors":"Hend Kacem,&nbsp;Z. Sassi,&nbsp;Manel Essid,&nbsp;J. Dhahri,&nbsp;Nuha Al-Harbi,&nbsp;B. M. Alotaibi,&nbsp;Haifa A. Alyousef","doi":"10.1007/s00339-024-07975-w","DOIUrl":"10.1007/s00339-024-07975-w","url":null,"abstract":"<div><p>Environment-friendly Ba_0.95Ca_0.05Ti_0.91Sn_0.09-xZr_xO₃ ceramics, with x = 0.00 and 0.01 (BCTSZ_x) were prepared through a standard solid-state sintering process. The diffusion coefficient estimated from the Santos-Eiras fit of <span>({varepsilon }_{r})</span>-T plot implies that the ferroelectric-paraelectric transition is a diffuse type. Well-saturated and fatigue resistant P-E hysteresis loops were obtained at room temperature (RT). The energy-storage density (W_rec) and the associated efficiency (η) were obtained from P-E loops data. When applying a relatively losw electric field of 30 kV/cm, a large value of adiabatic temperature change (∆T = 0.73 K), high values of electrocaloric responsivity (ξ = 0.247*10⁻⁶ K·m·V⁻¹) and coefficient of performance (COP = 12.26) were obtained in BCTSZ ceramic. In addition, the pyroelectric figures of merit (FOMs) were calculated. The density of pyroelectric energy harvesting increased from 206 to 237 kJ/m³ when the Olsen cycle was operated at temperatures between 25 and 100 °C and an electric field between 0 and 30 kV/cm. The results indicate that the increase in the grain size significantly enhances the dielectric, electrocaloric and pyroelectric properties. This research not only presents a novel technique for generating high-performance ceramic for refrigeration devices, but also expands the field of applications for BaTiO₃-based lead-free ferroelectrics for energy storage applications.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quenching high-temperature phase in Cu–Sn alloy system by femtosecond and picosecond laser irradiation","authors":"Taketo Furuichi,&nbsp;Hiroto Seki,&nbsp;Taiyoh Kawano,&nbsp;Keisuke Takabayashi,&nbsp;Tsubasa Endo,&nbsp;Eibon Tsuchiya,&nbsp;Makoto Yamaguchi,&nbsp;Yohei Kobayashi,&nbsp;Tatsuya Okada,&nbsp;Takuro Tomita","doi":"10.1007/s00339-024-07997-4","DOIUrl":"10.1007/s00339-024-07997-4","url":null,"abstract":"<div><p>This study investigated the dependence of irradiation fluence and pulse duration on the non–thermal alloying of Cu and Sn through laser irradiation. Femtosecond and picosecond laser irradiation were applied to the GaN part of a bilayer of Cu and Sn deposited on GaN. The laser beam operated at a wavelength and repetition rate of 1030 nm and 1 MHz, respectively, with pulse durations of 0.65 and 38 ps. Subsequently, the irradiated samples were thinned using a focused ion beam, and the cross-sections were examined with transmission electron microscopy. The lattice constants of the resultant phases were identified from selected area diffraction patterns. In data analysis, we identified the phases as β-Sn and ε-phases first, if discernible within a 5% error margin, employing high-temperature phases when identification was not possible. In the irradiated area, only Cu and Sn were detected under a lower fluence and shorter pulse duration. However, δ-phases, which are alloys of Cu and Sn, formed at relatively higher fluences and longer pulse durations. This high-temperature phase, unique to picosecond laser irradiation, cannot be obtained through conventional thermodynamic processes, highlighting the unique capabilities of laser-induced processing in creating novel alloy phases. These findings advance our understanding of laser-material interactions and provides a foundation for developing advanced materials with tailored properties for various applications.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of thiourea concentration on the structural, optical and photoelectric properties of ZnO/ZnS/PVC composite films used as flexible UV photodetectors","authors":"Hanane Houadsi,&nbsp;Sara Benzitouni,&nbsp;Mourad Zaabat,&nbsp;Louardi Remache,&nbsp;Abdelhakim Mahdjoub","doi":"10.1007/s00339-024-07965-y","DOIUrl":"10.1007/s00339-024-07965-y","url":null,"abstract":"<div><p>In this work, a new design of flexible photodetectors based on ZnO/ZnS/PVC composite films was realized using polyvinyl chloride as the polymer substrate. ZnO/ZnS composites were successfully synthesized by a hydrothermal method using a mixture of zinc acetate and thiourea, resulting in the formation of microspheres with a core- shell structure. The effect of thiourea concentration as sulfur source (0.2, 0.4, and 0.6 M) on the physical properties of ZnO/ZnS composites was investigated. XRD patterns and FTIR spectra demonstrated a successful fabrication of ZnO and ZnS composites. In addition, the particle size, morphology, elemental composition and the bandgap energy of ZnO/ZnS were studied through the utilization of SEM, EDS and UV-visible spectrophotometer. Finally, the effect of thiourea on the performance of UV photodetectors based on ZnO/ZnS/PVC composite films was investigated using I–V characteristics under dark and UV light conditions. The results showed that the photodetection of the samples improved with increasing thiourea concentration. In particular, the UV photodetector based on PVC-ZSO-3 exhibits a higher photocurrent (2.55 nA), responsivity (0.187 µA/W) and detectivity (5.18 × 10⁶ Jones) than other samples. This gives the impression that the polymer as an insulating material has a promising future as a flexible photodetector worth exploiting.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-temperature fabrication of high-performance AZO/Ag/WO3 multilayer films for flexible heaters","authors":"Ke Zhu,&nbsp;Kaiwei Yang","doi":"10.1007/s00339-024-07993-8","DOIUrl":"10.1007/s00339-024-07993-8","url":null,"abstract":"<div><p>In this study, Al-doped ZnO/Ag/WO₃ (AZO/Ag/WO₃)multilayer films were fabricated on polyethylene terephthalate (PET) substrates using the magnetron sputtering technique. A two-step magnetron sputtering process was employed to deposit WO₃, effectively preventing insulation in the AZO/Ag/WO₃ multilayer film caused by silver oxidation. The optical properties of the AZO/Ag/WO₃ multilayer films can be adjusted by varying the thickness of AZO and WO₃ layers. The optimal AZO/Ag/WO₃ multilayer film demonstrates a maximum figure-of-merit of 1.74 × 10^− 2 Ω⁻¹, with an average visible light transmittance of 81.1% and a sheet resistance of 7.04 Ω sq^− 1. When applied in transparent flexible heaters, the AZO/Ag/WO₃ multilayer films exhibit rapid thermal response, stable and controllable heating performance at low operating voltage, indicating exceptional thermal properties and high conductivity. The two-step magnetron sputtering deposition of external oxide layers to prevent the oxidation of silver is cost-effective and can be utilized to create high-performance oxide/metal/oxide transparent electrodes.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of magnetic properties and phase diagrams of the full Heusler Ga2 MnCo alloy","authors":"H. Kerrai,&nbsp;E. M. Jalal,&nbsp;A. Zaim,&nbsp;A. Hasnaoui,&nbsp;M. Kerouad,&nbsp;M. El Bouziani","doi":"10.1007/s00339-024-07983-w","DOIUrl":"10.1007/s00339-024-07983-w","url":null,"abstract":"<div><p>The full Heusler alloy <span>(hbox {Ga}_2)</span>MnCo, with its relatively low Curie temperature, is a promising candidate for magnetic refrigeration applications. Thus, a theoretical study using the mean-field theory based on the Bogoliubov inequality for the Gibbs free energy in the context of the Ising model is crucial for gaining a better understanding of the magnetic behavior of this material. We investigated the effects of magnetic anisotropy and exchange coupling on the ground-state phase diagrams, identifying the most stable configurations. Additionally, we obtained the magnetic properties at finite temperature and showed that only second-order phase transitions occur for any values of the theoretical Hamiltonian parameters. The model describes rich phase transitions, including first- and second-order phase transitions, as well as a critical end-point. The critical behavior of the system arises from the competition between exchange interaction and magnetic anisotropy.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vuv/vis absorption spectroscopy of different PAHs","authors":"Lorenzo Maddii Fabiani,&nbsp;Tobias Reiker,&nbsp;Helmut Zacharias","doi":"10.1007/s00339-024-07959-w","DOIUrl":"10.1007/s00339-024-07959-w","url":null,"abstract":"<div><p>The present study provides new solid-phase absorption data of different Polycyclic Aromatic Hydrocarbon (PAHs) molecules in the Far Ultraviolet (FUV) and UV/Visible regions. Two features of interstellar extinction curves fall in this region: the FUV rise and the UV bump. Here, thin films of PAHs were prepared by means of the spin coating method onto a transparent substrate, and their solid phase absorption spectra were recorded. Spectra of isolated molecules simulated by Time-Dependent Density Functional Theory (TD-DFT) calculations were also produced for comparison. The results fit quite well with the FUV rise but not with the UV bump. Given the scarcity of FUV experimental absorption data of PAHs in the literature and especially in solid phase, these results are also interesting for reference for other studies ranging from thin films applications to interstellar medium models.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-024-07959-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Using thermal diffusivity as a cytotoxic evaluation tool for silica nanoparticles","authors":"Libertad Juárez-Santacruz,&nbsp;José Luis Jiménez-Pérez,&nbsp;Angel Netzahual-Lopantzi","doi":"10.1007/s00339-024-07978-7","DOIUrl":"10.1007/s00339-024-07978-7","url":null,"abstract":"<div><p>Silicon dioxide nanoparticles are receiving increasing attention due to their new properties and wide applications. The aim of this study was to investigate the cytotoxic potential of 300 nm SiO₂ nanospheres on erythrocytes using thermal diffusivity values. Cytotoxicity was correlated with thermal diffusivity of the hemolysates; thermal values ​​were from 10.00 ± 0.40 × 10^− 4 cm²/s to 12.20 ± 0.07 × 10^− 4 cm²/s. The concentrations tested were 50, 100, 200, 400 and 800 µg/ml of silica nanoparticles. To evaluate cytotoxicity, human erythrocytes were obtained. Hemolytic damage in red blood cells had an exponential behavior dependent on the concentration of SiO₂ nanostructures. The use of concentrations of 800 µg/ml exceeds the limit of compatibility for human red blood cells. Antioxidant enzyme quantification assays were also performed in which a dose-dependent depletion of catalase activity levels and an increase in glutathione S-transferase was observed. Therefore, oxidative stress was suggested as a mechanism of toxicity in erythrocytes.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterisation of rouaite, an unusual copper-containing pigment in early modern English wall paintings, by synchrotron micro X-Ray diffraction and micro X-Ray absorption spectroscopy","authors":"Ellen H. Purdy,&nbsp;Sarah Critchley,&nbsp;Clément Holé,&nbsp;Marine Cotte,&nbsp;Andrea Kirkham,&nbsp;Michael Casford","doi":"10.1007/s00339-024-07954-1","DOIUrl":"10.1007/s00339-024-07954-1","url":null,"abstract":"<div><p>Although the use of verditer, a synthetically produced copper carbonate pigment chemically analogous to azurite (Cu₃(CO₃)₂(OH)₂), in early modern wall paintings is regularly reported in grey literature, its detection in wall paintings is typically unavailable in a public forum. This article focusses on two particular samples (M9 and T1) initially suspected to contain copper blue pigments from decorative wall painting schemes in domestic houses across a range of status groups, in eastern and south-eastern England, dated to 1550-1650. Interest in verditer synthesis procedures is found in textual sources including both historic manuals and current scientific literature. The unreliability of the synthesis, particularly for blue verditer, however, is widely documented. Here, we report a multimodal study employing SEM-EDX, SR-<span>(mu)</span>PXRD mapping, and SR-<span>(mu)</span>XANES spectroscopy to characterise the phases present in two wall painting samples, one c. 1600/early 1600s (M9) and the other c. 1600 (T1). In addition to assessment of the presence of verditer, this study presents the first identification of rouaite, a synthetic copper hydroxynitrate mineral (Cu₂(NO₃)(OH)₃), in wall painting samples. Rouaite, shown in a previous publication to be a common byproduct of replications of the historical verditer synthetic recipes, appears in combination with verditer and alone. Its infrequent identification in paintings and murals is considered in light of analytical challenges. The presence of copper hydroxychlorides is also discussed in the context of rouaite stability and degradation. These results represent a significant development in our knowledge of the early modern palette in England and historical verditer synthesis and advances our understanding of how these painting schemes may be best preserved in the future.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"130 11","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-024-07954-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}