Indian Journal of Physics最新文献_第2页

Novel applications of conductor/ferromagnetic composites in development of space infrastructure, planetary defense, and return space missions 导体/铁磁复合材料在空间基础设施发展、行星防御和返回空间任务中的新应用

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-10 DOI: 10.1007/s12648-025-03651-8

Anatoly Mayburd

{"title":"Novel applications of conductor/ferromagnetic composites in development of space infrastructure, planetary defense, and return space missions","authors":"Anatoly Mayburd","doi":"10.1007/s12648-025-03651-8","DOIUrl":"10.1007/s12648-025-03651-8","url":null,"abstract":"<div>This research explores further potential uses of ferromagnetic-conductor composites, which are currently predominantly employed for electromagnetic shielding. The theoretical analysis shows that the regimes of ferromagnetic saturation in these materials negate magnetization curl within the composites. The absence of volume bound current, following zero magnetization curl, leaves surface bound current uncompensated in saturation regimes. The uncompensated surface bound current manifests along the perimeter of these composites. The surface bound current is enhanced by configuring a magnetic coil as a thin ribbon, where the bound current is proportional to the perimeter of the cross-section and inversely related to its thickness. In specific limiting cases, the ratio of bound current to the cross-sectional area approaches that of high-temperature superconductors. The magnetic pressure generated in these coils causes them to extend, and under outer space conditions, this results in structures that are lightweight, rigid, and self-supporting. Various plasma-reheating techniques enhance the efficacy of magnetic sails and proposed geomagnetic shuttle drives. The report examines the use of magnetic sails in planetary defense, addresses exiting planetary gravitational wells through orbital cycles, electromagnetic muscle analogues, electromagnetically enhanced armor, and advanced plasma confinement elements as potential applications of ferromagnetic-conductor composites.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4155 - 4168"},"PeriodicalIF":1.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Semiconducting character analysis of RhY2O4 oxide spinel via GGA, GGA + mBJ, and GGA + U approximations 通过GGA、GGA + mBJ和GGA + U近似分析RhY2O4氧化尖晶石的半导体特性

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-09 DOI: 10.1007/s12648-025-03646-5

Fermin Ak, Evren Görkem Özdemir, Hossein A. Rahnamaye Aliabad

{"title":"Semiconducting character analysis of RhY2O4 oxide spinel via GGA, GGA + mBJ, and GGA + U approximations","authors":"Fermin Ak, Evren Görkem Özdemir, Hossein A. Rahnamaye Aliabad","doi":"10.1007/s12648-025-03646-5","DOIUrl":"10.1007/s12648-025-03646-5","url":null,"abstract":"<div>The semiconducting character of RhY2O4 oxide spinel was investigated using first-principles approximations. As a result of the optimization curve, RhY2O4 was obtained as a ferromagnet with an equilibrium lattice parameter of 9.46 Å with the help of the GGA approximation. When U = 1, 2, 3, and 4 eV were used, the lattice parameters were obtained as 9.49 Å, 9.52 Å, 9.55 Å, and 9.58 Å, respectively. The GGA approximation yielded the band gap values with the lowest semiconductor character, measuring 0.352 eV for the majority electron spin and 0.134 eV for the minority electron spin. Both direct and indirect band gaps were observed in the majority and minority electron spins. Elastic calculations confirmed the elastic stability of RhY2O4. Furthermore, the Debye temperature was determined to be 480.942 K at 0 GPa pressure. Poisson’s and B/G ratios were obtained at this pressure as 0.278 and 1.92, respectively. According to these results, RhY2O4 spinel is ductile. However, with increasing pressure, brittleness properties begin at about 10 GPa. RhY2O4 has a total magnetic moment of 6.000 µB/f.u. RhY2O4 is a promising candidate for semiconductor applications, characterized by advantageous elastic, magnetic, and electronic properties.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4123 - 4133"},"PeriodicalIF":1.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12648-025-03646-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Embedding carbon nanofibers on nickel oxide for supercapacitor applications 纳米碳纤维在氧化镍上的嵌入及其在超级电容器中的应用

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-07 DOI: 10.1007/s12648-025-03662-5

D. Baba Basha, Ahsan Ahmed

{"title":"Embedding carbon nanofibers on nickel oxide for supercapacitor applications","authors":"D. Baba Basha, Ahsan Ahmed","doi":"10.1007/s12648-025-03662-5","DOIUrl":"10.1007/s12648-025-03662-5","url":null,"abstract":"<div>Supercapacitor electrode intrinsic electrochemical performance is mainly dependent on their structures. Thus, a lot of attention has been garnered on the logical synthesis of supercapacitor electrodes with appropriate structures. The transition metal oxide and porous carbon composite have shown outstanding porosity and electrical conductivity. This makes them a promising candidate as a supercapacitor electrode. Nevertheless, their complex synthesis and unpredictable instability remain a significant obstacle. The porous network of the Carbon Nanofiber (CNF) and Nickel Oxide (NiO) may offer plenty of pathways for the transfer of ions and encourage a sufficient interaction between the active ingredient and the electrolyte. Moreover, their composite network may account for stable and excellent pseudocapacitance. In this study, we propose a simple process employing an ultrasonication technique for embedding different weight percent of CNF on NiO to synthesize CNF/NiO nanocomposite. When evaluated as an electrode for asymmetric supercapacitor configuration, the nanocomposite with 2 weight percent of CNF (CNF-2) offered better performance in terms of low response time (~ 12 s) and low bulk resistance (~ 0.76 Ω). In comparison to other nanocomposite, the optimized one revealed excellent rate capability (capacitance retention of ~ 74% even after scan rates of 100 mV s−1). CNF-2 exhibited a high specific capacitance of 173.4 F g−1 at a current load of 1 A g−1; and long cycling stability (95.2% capacitance retention even after 5000 cycles). Moreover, the optimized composite revealed a maximum specific energy of 6.1 Wh kg−1 at a respective specific power of 1.4 kW kg−1. The method highlighted in this investigation benefits from ease of use, environmental friendliness, and potential for large-scale production. It also offers prospects for the design and development of electrode materials of the future for energy storage and conversion devices.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4053 - 4065"},"PeriodicalIF":1.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of calcination temperature of CeO2/ZnFe2O4/CuFe2O4 nanocomposites: structural, surface area and paramagnetic properties 煅烧温度对CeO2/ZnFe2O4/CuFe2O4纳米复合材料结构、表面积和顺磁性的影响

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-07 DOI: 10.1007/s12648-025-03618-9

Gulime Ravi, K. Thyagarajan

{"title":"Effect of calcination temperature of CeO2/ZnFe2O4/CuFe2O4 nanocomposites: structural, surface area and paramagnetic properties","authors":"Gulime Ravi, K. Thyagarajan","doi":"10.1007/s12648-025-03618-9","DOIUrl":"10.1007/s12648-025-03618-9","url":null,"abstract":"<div>This research examined how varying calcination temperatures affected the fundamental characteristics of ZnFe2O4/CuFe2O4/CeO2 nanocomposites. These materials were created using an autocombustion technique and then subjected to calcination at 600, 700, and 800 °C, with the resulting samples labeled CeZnCu 1, CeZnCu 2, and CeZnCu 3. X-ray diffraction (XRD) measurements demonstrated that the purity of the crystalline phases and the average crystallite dimensions were significantly altered by the temperature of calcination. The material's morphology, specifically particle size and shape alterations resulting from heat treatment, was visualized using field emission scanning electron microscopy (FESEM). Chemical bonding was confirmed through Fourier transform infrared (FTIR) spectroscopy, and the elemental surface composition was quantified using X-ray photoelectron spectroscopy (XPS). Surface area and pore characteristics were determined via Brunauer–Emmett–Teller (BET) analysis, which demonstrated a significant textural modification due to the thermal processing. The study's findings emphasize the crucial role of calcination temperature in controlling the physical and chemical properties of these nanocomposites. This work offers valuable information for optimizing the synthesis process, allowing for the precise adjustment of material properties for diverse applications and the advancement of material design.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 10","pages":"3767 - 3775"},"PeriodicalIF":1.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical investigation of Higgs mechanism in mutational behavior field of monkeypox virus 猴痘病毒突变行为领域希格斯机制的理论研究

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-06 DOI: 10.1007/s12648-025-03555-7

Richard Pinčák, Kabin Kanjamapornkul, Alexander Pigazzini, Saeid Jafari

{"title":"Theoretical investigation of Higgs mechanism in mutational behavior field of monkeypox virus","authors":"Richard Pinčák, Kabin Kanjamapornkul, Alexander Pigazzini, Saeid Jafari","doi":"10.1007/s12648-025-03555-7","DOIUrl":"10.1007/s12648-025-03555-7","url":null,"abstract":"<div>We modified and applied the definition and meaning of the mathematical structure of the covariant derivative of gauge field in particle physics to redefine the situation where we need to utilize for the deep understanding of the theoretical investigation of the source of mutation field in the genome of monkeypox during the viral replication process. This topic allows us to identify the relationship between the adaptive behavior and intrinsic self-dual and anti-self-dual consistency field in parasitism co-state, where the mutational induced an effect of the loop replication process with parallel transport of newly defined quantum genotype in the co-living quantum biological state. We used this approach, we applied to the comparative study of quantum genotype measurement of the whole genome of selected 27 samples of monkeypox viruses including 10 new variants. The result of the image of the spectrum of tensor correlation analysis suggests that IIb. B. 1.5 variant of the monkeypox virus is similar to the smallpox.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 9","pages":"3173 - 3196"},"PeriodicalIF":1.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12648-025-03555-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time stabilization the bias point of electro-optic amplitude modulator at the single-photon level 单光子水平电光调幅器偏置点的实时稳定

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-06 DOI: 10.1007/s12648-025-03617-w

B. Yu, Z.-Q. Yin, W.-J. Ding

引用次数: 0

Finsler geometry insights into wormhole traversability and physical properties 芬斯勒几何学对虫洞可穿越性和物理特性的洞察

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-05 DOI: 10.1007/s12648-025-03638-5

M. Manjunath, S. K. Narasimhamurthy, Z. Nekouee, B. R. Yashwanth, Y. K. Mallikarjun

{"title":"Finsler geometry insights into wormhole traversability and physical properties","authors":"M. Manjunath, S. K. Narasimhamurthy, Z. Nekouee, B. R. Yashwanth, Y. K. Mallikarjun","doi":"10.1007/s12648-025-03638-5","DOIUrl":"10.1007/s12648-025-03638-5","url":null,"abstract":"<div>The present study provides a comprehensive investigation of traversable wormhole solutions within the framework of Finsler geometry, offering a novel extension beyond conventional Riemannian approaches. By formulating and analyzing a modified gravitational field equation, we establish the fundamental conditions necessary for the stability and traversability of the wormhole. By incorporating a linear equation of state, (p_r = gamma rho), alongside a meticulously chosen shape function, we ensure adherence to essential geometric constraints. Through rigorous examination of proper radial distance, active mass, and total gravitational energy, we demonstrate that the Finslerian parameter (lambda) plays a critical role in shaping the wormhole’s physical properties. Notably, our findings reveal that Finslerian effects significantly modify the energy conditions, offering a more viable framework for wormhole existence. Furthermore, we establish that for specific values of (lambda), the total gravitational energy remains favorable for traversability, while excessive accumulation may trigger black hole formation. In addition to advancing the understanding of Finslerian wormholes in modified gravity theories, this study also underscores their astrophysical significance, paving the way for future explorations in higher-dimensional and anisotropic space-time models.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4459 - 4473"},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fractional geoKdV model in higher dimensional oceanic flows and its applications in geophysics 高维海洋流的分数阶geoKdV模型及其在地球物理中的应用

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-05 DOI: 10.1007/s12648-025-03554-8

Md. Sabur Uddin, Alrazi Abdeljabbar, Harun-Or-Roshid, Mst. Shekha Khatun, Md. Mamunur Roshid

{"title":"A fractional geoKdV model in higher dimensional oceanic flows and its applications in geophysics","authors":"Md. Sabur Uddin, Alrazi Abdeljabbar,  Harun-Or-Roshid, Mst. Shekha Khatun, Md. Mamunur Roshid","doi":"10.1007/s12648-025-03554-8","DOIUrl":"10.1007/s12648-025-03554-8","url":null,"abstract":"<div>In this manuscript, our goal is to investigate effects of Coriolis constant attribute on obtained solutions for the geoKdV equation. Two effective techniques will be employed to unveil diverse manifestations of soliton behaviors produced by the simple equation method and the modified generalized exponential rational function technique (mGERFT). Our suggested procedures are implemented for obtaining various types of exact solutions of geoKdV equation. These methods allow us to obtain solutions formulated in terms of special functions, which are very useful in many different branches of mathematical physics. Furthermore, our research will be presented novel and distinctive arrangements of soliton behaviors derived from this model, offering perspectives on real-world uses in the field of geophysics. As a result, we deliver accurate wave solutions for bright and dark bell-shaped waves, multiple single solitons, exponential solutions and periodic waves profile. Using the computational program Maple, we have produced multiple 2D plots and 3D plots with contour lines of our obtained solutions. These structures can also characterize various explanations for other models in the purviews of nonlinear science and engineering.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 10","pages":"3849 - 3863"},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced materials for next-generation devices: insights into the structural, optical, and thermoelectric properties of Hf2Pd2AlBi and Hf2Pd2AlSb alloys 新一代器件的先进材料：Hf2Pd2AlBi和Hf2Pd2AlSb合金的结构、光学和热电性能的见解

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-02 DOI: 10.1007/s12648-025-03643-8

Abdelhak Khatar, Mohammed Houari, Tayeb Lantri, Samir Bentata, Bouabdellah Bouadjemi, Zoubir Aziz, Ahmed Boucherdoud, Mokhtar Boudjelal

{"title":"Advanced materials for next-generation devices: insights into the structural, optical, and thermoelectric properties of Hf2Pd2AlBi and Hf2Pd2AlSb alloys","authors":"Abdelhak Khatar, Mohammed Houari, Tayeb Lantri, Samir Bentata, Bouabdellah Bouadjemi, Zoubir Aziz, Ahmed Boucherdoud, Mokhtar Boudjelal","doi":"10.1007/s12648-025-03643-8","DOIUrl":"10.1007/s12648-025-03643-8","url":null,"abstract":"<div>In this work, we systematically investigated the structural, optoelectronic, and thermoelectric properties of the double half-Heusler (DHH) compounds Hf2Pd2AlBi and Hf2Pd2AlSb. The study was conducted using density functional theory (DFT) within the framework of the generalized gradient approximation (GGA-PBE), complemented by the modified Becke–Johnson potential (mBJ-GGA) to enhance the accuracy of electronic property predictions. Our results indicate that both Hf2Pd2AlBi and Hf2Pd2AlSb are thermodynamically most stable in their non-magnetic (NM) phase. Electronic structure analysis reveals semiconducting behavior, with direct band gaps at the Γ point of 0.308 eV for Hf2Pd2AlBi and 0.405 eV for Hf2Pd2AlSb. A comprehensive evaluation of optical properties was performed, including the complex dielectric function, optical conductivity, refractive index, absorption coefficient, and reflectivity. Additionally, melting temperatures and elastic constants were estimated to assess thermal and mechanical stability. Thermoelectric performance evaluated through Boltzmann transport theory, showed high Seebeck coefficients and factors of merit (ZT), underscoring the potential of both compounds for thermoelectric applications.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4109 - 4121"},"PeriodicalIF":1.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analytical optical soliton solution & stability analysis of the dimensionless time-dependent paraxial equation 无量纲时变傍轴方程的解析光孤子解及稳定性分析

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-02 DOI: 10.1007/s12648-025-03614-z

Abdullah, Ghaus ur Rahman, Osman Tunç

{"title":"Analytical optical soliton solution & stability analysis of the dimensionless time-dependent paraxial equation","authors":"Abdullah, Ghaus ur Rahman, Osman Tunç","doi":"10.1007/s12648-025-03614-z","DOIUrl":"10.1007/s12648-025-03614-z","url":null,"abstract":"<div>This study investigates the analytical solutions of optical solitons governed by the a time-dependent Paraxial Equation incorporating Kerr law nonlinearity. A rigorous analytical method is developed to obtain these solutions, offering insights into the behavior of optical solitons in nonlinear media. Here, we have applied the eMETEM approach for the first time to create robust solutions to the time-dependent Paraxial Equation. Building an efficient plan to solve the governing model has been our main goal. The Kerr law nonlinearity, which describes the intensity-dependent refractive index, profoundly affects the propagation characteristics of optical pulses. Through systematic analysis, key properties such as soliton formation, stability, and evolution are elucidated. The derived analytical solutions provide a valuable framework for understanding the intricate dynamics of optical solitons in nonlinear media, facilitating advancements in various applications including optical communication and signal processing.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4181 - 4195"},"PeriodicalIF":1.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12648-025-03614-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0