Indian Journal of Physics最新文献

Enhancing microstructure and magnetic properties of ribbons of Cu–Co–Ti alloy through ball milling: experimental insights and theoretical perspectives 通过球磨提高铜-钴-钛合金带的微观结构和磁性能：实验见解和理论视角

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-19 DOI: 10.1007/s12648-024-03421-y

Sumit Chabri, Arijit Sinha, Madhumita Nath, Atul Bandyopadhyay, Gurudas Mandal

{"title":"Enhancing microstructure and magnetic properties of ribbons of Cu–Co–Ti alloy through ball milling: experimental insights and theoretical perspectives","authors":"Sumit Chabri, Arijit Sinha, Madhumita Nath, Atul Bandyopadhyay, Gurudas Mandal","doi":"10.1007/s12648-024-03421-y","DOIUrl":"https://doi.org/10.1007/s12648-024-03421-y","url":null,"abstract":"To create granular materials with exceptional magnetoresistance properties, immiscible alloys were ball-milled in RSP (rapid solidification processing) ribbon. A system based on copper (Cu–Co) has been investigated. For Cu–Co–Ti, a single supersaturated solid solution has been found. The addition of Ti to Cu–Co substantially increases its solid solubility. The evolution of phase (s) during rapid solidification, and mechanical alloying followed by isothermal annealing were characterized using various techniques including differential thermal analyzers, High-resolution transmission electron microscopy, and X-ray diffraction. This study extensively used the superconducting quantum interference device magnetometer to observe magnetic behavior. The Cu–Co–Ti alloy from the ball milling RSP ribbon process was annealed at 550 °C for 1 h to get the favorable combination of magnetic characteristics. An in-depth theoretical analysis of the magnetic properties was conducted through the application of the 'VAMPIRE' software package, employing Monte Carlo Simulation as the underlying methodology.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"17 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258220","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

Saturation effect in confined quantum systems with energy-dependent potentials 具有能量依赖势的约束量子系统中的饱和效应

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-18 DOI: 10.1007/s12648-024-03403-0

Ohood Ali AL-Sbaheen, Ahmed Al-Jamel, Mohamed Ghaleb Al-Masaeed

{"title":"Saturation effect in confined quantum systems with energy-dependent potentials","authors":"Ohood Ali AL-Sbaheen, Ahmed Al-Jamel, Mohamed Ghaleb Al-Masaeed","doi":"10.1007/s12648-024-03403-0","DOIUrl":"https://doi.org/10.1007/s12648-024-03403-0","url":null,"abstract":"In this paper, we study the saturation effect in the energy or mass spectra of three quantum models with energy-dependent potentials: the harmonic oscillator, the hydrogen atom, and the heavy quarkonia. We used the method proposed in [García-Martínez (Phys Lett 373:3619, 2009)], which is based on studying various canonical point and gauge transformations applied to a function, g(x), multiplied by a given differential equation of known solutions as special orthogonal functions, that convert it into a Schrödinger-like equation. The first two models stem from implementing the method on the confluent hypergeometric differential of the well-known solutions ( _1 F_1), while the third model (heavy quarkonia) stems possibly from the hypergeometric differential of the well-known solutions ( _2 F_1). In particular, the heavy quarkonia mass spectra for both (cbar{c}) and (bbar{b}) are produced at different values of the saturation parameter (lambda ) and compared with the available experimental data. It is found that these systems may exhibit saturation effect when the energy-dependent effect is included.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"22 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258221","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

The electrical characterization of V2O5/p-Si prepared by spray pyrolysis technique using perfume atomizer 利用香水雾化器通过喷雾热解技术制备的 V2O5/p-Si 的电学特性

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-18 DOI: 10.1007/s12648-024-03424-9

Veysel Eratilla, Serif Ruzgar

{"title":"The electrical characterization of V2O5/p-Si prepared by spray pyrolysis technique using perfume atomizer","authors":"Veysel Eratilla, Serif Ruzgar","doi":"10.1007/s12648-024-03424-9","DOIUrl":"https://doi.org/10.1007/s12648-024-03424-9","url":null,"abstract":"Vanadium pentoxide (V2O5) thin films were deposited onto glass and p-type silicon substrates via spray pyrolysis by using a perfume atomizer. The surface morphology of thin film was analyzed by atomic force microscopy. Structural and optical characteristics of the deposited thin films were assessed through X-ray diffraction and UV–Vis spectroscopy, respectively. The V2O5 thin films were determined to be polycrystalline in nature, exhibiting a band gap of 2.20 eV. The semiconductor properties of V2O5 thin films deposited on glass substrates were investigated through electrical measurements conducted by using a two-probe system across a range of temperatures. Key electrical parameters such as sheet resistance, conductivity, and activation energy were deduced from these measurements. Furthermore, the electrical characteristics of the Ag/V2O5/p-Si heterojunctions were scrutinized via current–voltage (I–V) and capacitance–voltage (C–V) analyses, which exhibited pronounced rectifying behavior in the Ag/V2O5/p-Si device structure.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"17 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258219","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

Radiative neutron capture reaction rates for stellar nucleosynthesis 恒星核合成的辐射中子俘获反应速率

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-17 DOI: 10.1007/s12648-024-03363-5

Vinay Singh, Debasis Bhowmick, D. N. Basu

{"title":"Radiative neutron capture reaction rates for stellar nucleosynthesis","authors":"Vinay Singh, Debasis Bhowmick, D. N. Basu","doi":"10.1007/s12648-024-03363-5","DOIUrl":"https://doi.org/10.1007/s12648-024-03363-5","url":null,"abstract":"There is a high demand for nuclear data in multidisciplinary subject like nuclear astrophysics. The two areas of nuclear physics which are most clearly related to one another are stellar evolution and nucleosynthesis. The necessity for nuclear data for astrophysical applications puts experimental methods as well as reliability and predicative ability of current nuclear models to the test. Despite recent, considerable advances, there are still significant issues and mysteries. Only a few characteristics of nuclear astrophysics are covered in the current work which include (^{52})Fe(n,(gamma ))(^{53})Fe, (^{53})Fe(n,(gamma ))(^{54})Fe, (^{54})Fe(n,(gamma ))(^{55})Fe, (^{55})Fe(n,(gamma ))(^{56})Fe, (^{56})Fe(n,(gamma ))(^{57})Fe, (^{57})Fe(n,(gamma ))(^{58})Fe and (^{58})Fe(n,(gamma ))(^{59})Fe reactions which are important in stellar nucleosynthesis. The reaction rates are calculated using nuclear statistical model. These rates are subsequently fitted to polynomials of temperature T(_9) in order to facilitate calculations for stellar nucleosynthesis.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258223","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

Investigation of characteristics of ionospheric vertical plasma drift during sunset over the mid-latitude station Nicosia, Cyprus 调查塞浦路斯尼科西亚中纬度站上空日落期间电离层垂直等离子体漂移的特征

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-16 DOI: 10.1007/s12648-024-03414-x

Blessy Varghese, Haris Haralambous, Christina Oikonomou, Tiju Joseph Mathew, Patrick Dandenault

{"title":"Investigation of characteristics of ionospheric vertical plasma drift during sunset over the mid-latitude station Nicosia, Cyprus","authors":"Blessy Varghese, Haris Haralambous, Christina Oikonomou, Tiju Joseph Mathew, Patrick Dandenault","doi":"10.1007/s12648-024-03414-x","DOIUrl":"https://doi.org/10.1007/s12648-024-03414-x","url":null,"abstract":"This study investigates the characteristics of the vertical component of the ionospheric F2 layer plasma drift over the mid-latitude station of Nicosia, Cyprus ((hbox {35}^{circ }hbox {N}), (hbox {33}^{circ }hbox {E}), at magnetic dip angle, (hbox {I}=hbox {51.7}^{circ })), during pre- and post-sunset hours using digisonde data from November 2013 to October 2014. The observations demonstrate significant seasonal dependence in the vertical plasma drift during post-sunset hours. Vertical velocity shows a regular upward enhancement and notable oscillations during the evening in all seasons, with time variation dependent on the seasonal variability of sunset. The upward enhancement during sunset is typically attributed to chemical loss. However, the present study shows that the critical plasma frequency does not decrease significantly during sunset. Therefore, the observed velocity enhancement may not be solely attributed to recombination effects after sunset. It might be influenced by wind-driven electric fields. Wavelet analysis reveals wave activity around sunset, suggesting that the oscillations may be excited by the Solar Terminator.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"31 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258224","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

Determination of the optical properties of tungsten trioxide thin film using the transfer matrix method 利用转移矩阵法测定三氧化钨薄膜的光学特性

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-15 DOI: 10.1007/s12648-024-03401-2

Muhammad Adnan, M. Imran Jamil, Bilal Ramzan, Tanvir Hussain, Afaq Ahmad, Muhammad Usman Ghani

引用次数: 0

The effect of gravity on a nonlocal fiber-reinforced thermoelastic solid with reference temperature-dependent material properties via various theories 通过各种理论研究重力对非局部纤维增强热弹性固体的影响，该固体的材料特性与参考温度有关

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-13 DOI: 10.1007/s12648-024-03369-z

Samia M. Said, Mohamed I. A. Othman

引用次数: 0

Search for new physics with reactor neutrino at Kuo-Sheng neutrino laboratory 在郭盛中微子实验室用反应堆中微子寻找新物理

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-12 DOI: 10.1007/s12648-024-03406-x

S. Karmakar, M. K. Singh, S. Karadaǧ, H. T. Wong, H. B. Li, V. Sharma, C. Greeshma, M. K. Singh, L. Singh, F. K. Lin, V. Singh

{"title":"Search for new physics with reactor neutrino at Kuo-Sheng neutrino laboratory","authors":"S. Karmakar, M. K. Singh, S. Karadaǧ, H. T. Wong, H. B. Li, V. Sharma, C. Greeshma, M. K. Singh, L. Singh, F. K. Lin, V. Singh","doi":"10.1007/s12648-024-03406-x","DOIUrl":"https://doi.org/10.1007/s12648-024-03406-x","url":null,"abstract":"The observation of coherent elastic neutrino nucleus scattering by the COHERENT collaboration alongside a positive hint from the DRESDEN−II experiment propelled the study of neutrino physics beyond the Standard Model. In the current work we have explored the light mediator models scenario, along with the neutrino non-standard interactions. Apart from a very good sensitivity to study these physics scenarios, reactor neutrinos provide the benefit of working in the fully coherent region due to their abundant low energy flux. The analyzed data set in the present work comprised of 124.2(70.3) kg day reactor ON(OFF) exposure collected at Kuo-Sheng neutrino laboratory with high purity n-type point Germanium detector. To assess the potential influence of the quenching factor on the limits obtained, we varied the parameter k in the Lindhard model within three scenarios: conservative (0.157), intermediate (0.200), and optimistic (0.260). These choices encompass a range of currently favored values. In the absence of any discernible excess at low energy in the measured spectrum for the considered physics scenarios, we have established competitive limits with the contemporary experiments specifically focused to search for coherent elastic neutrino nucleus scattering.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"22 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215875","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

Enhancing power conversion efficiency of lead-free perovskite solar cells: a numerical simulation approach 提高无铅过氧化物太阳能电池的功率转换效率：一种数值模拟方法

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-12 DOI: 10.1007/s12648-024-03365-3

Aditi Thakur, Dhawan Singh

{"title":"Enhancing power conversion efficiency of lead-free perovskite solar cells: a numerical simulation approach","authors":"Aditi Thakur, Dhawan Singh","doi":"10.1007/s12648-024-03365-3","DOIUrl":"https://doi.org/10.1007/s12648-024-03365-3","url":null,"abstract":"Recent research in environmentally friendly lead-free perovskite solar cells have made tremendous progress with their rapid improvements in performance and on the verge of commercialisation. In this research, a numerical simulation-based analysis of MASnI3 with different transport layer materials are performed to enhance the efficacy. The finding shows, an optimized device architecture comprising of Cu2O as a hole transport layer and TiO2 as an electron transport layer achieves the highest power conversion efficiency of 27.21%, open-circuit voltage of 0.99 V, short circuit current density of 33.83 mA/cm2, and fill factor of 81.12%, respectively. Moreover, the proposed model results have been compared with the recently published lead-free literature and found to have improvement in performance. Furthermore, the impact of several significant parameter on system performance is thoroughly analysed and optimised. This covers effect of temperature change, absorber thickness, total defect density, acceptor density of absorber along with others. Henceforth, the proposed research work will expand the possibilities of designing high-performance lead-free perovskite solar cells experimentally in future research.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"103 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215876","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 novel analysis of the fractional Cauchy reaction-diffusion equations 分式考奇反应扩散方程的新分析

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-12 DOI: 10.1007/s12648-024-03411-0

Deepak Umarao Sarwe, A. Stephan Antony Raj, Pushpendra Kumar, Soheil Salahshour

引用次数: 0