Philosophical Magazine最新文献_第9页

Spin-polarised wave-packets transport through one-dimensional nonlinear multiple barriers: Rashba and Dresselhaus Spin–Orbit interactions 自旋极化波包通过一维非线性多重势垒传输:Rashba和Dresselhaus自旋轨道相互作用

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-02-10 DOI: 10.1080/14786435.2023.2171498

Maryam Sabzevar, M. Ehsani, M. Solaimani

引用次数: 0

Synergy of grain boundary and interface diffusion during intermediate compound formation 中间化合物形成过程中晶界和界面扩散的协同作用

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-02-03 DOI: 10.1080/14786435.2023.2169381

A. Gusak, Anastasiia Titova

引用次数: 1

Application of fractional Fowler-Nordheim law on field electron emission from tungsten and lanthanum hexaboride nano-scale emitters 分数阶Fowler-Nordheim定律在钨和六硼化镧纳米发射体场电子发射中的应用

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-02-03 DOI: 10.1080/14786435.2023.2173366

A. A. Al-Tabbakh, Mazen A. Madanat, M. Mousa

{"title":"Application of fractional Fowler-Nordheim law on field electron emission from tungsten and lanthanum hexaboride nano-scale emitters","authors":"A. A. Al-Tabbakh, Mazen A. Madanat, M. Mousa","doi":"10.1080/14786435.2023.2173366","DOIUrl":"https://doi.org/10.1080/14786435.2023.2173366","url":null,"abstract":"ABSTRACT The Murphy-Good Fowler-Nordheim equation was derived for planar and smooth conducting surfaces based on the Sommerfeld free-electron theory. It is applicable to a wide range of micro-emitters. The analyses of experimental field emission data from nano-scaled emitters showed deviation from the theoretical predictions. This has either been noticed in the mismatch of the current–voltage characteristics and/or in the FN-plot behaviour. Such deviation is attributed to the non-planar character of the emitting surface and the shape of the surface potential barrier through which the emitting electrons are tunnelling. Recently, Zubair et al. derived a FN-type equation that takes into account the reduced dimensionality of the emission surface and the non-parabolic energy dispersion [Zubair et al., IEEE Transactions on Electron Devices 65(6) 2018]. In this model, the constants of the conventional FN equation become two variables that depend on the fractional parameter expressing the surface complexity. In the present work, the fractional law is applied to field electron emission from clean tungsten (W) nano-emitter and lanthanum hexaboride (LaB6) nano-protrusions. This has been accomplished in the whole range of the fractional parameter in order to find the value that reproduces a better fit with the experimental data. The application requires determining the geometrical parameter of the emitter and the field emission setup. Results show that the experimental data can easily be reproduced at certain values of the fractional parameter. These ‘certain’ values depend on the geometrical parameters and thus the method used to calculate the electric field value at the emitter surface.","PeriodicalId":19856,"journal":{"name":"Philosophical Magazine","volume":"38 1","pages":"860 - 871"},"PeriodicalIF":1.6,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81351348","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}

引用次数: 3

Tuning of nonlinear optical characteristics of a cylindrical quantum dot by external fields and structure parameters 外场和结构参数对圆柱形量子点非线性光学特性的调谐

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-02-03 DOI: 10.1080/14786435.2023.2171499

M. Jaouane, A. Sali, E. Kasapoglu, F. Ungan

{"title":"Tuning of nonlinear optical characteristics of a cylindrical quantum dot by external fields and structure parameters","authors":"M. Jaouane, A. Sali, E. Kasapoglu, F. Ungan","doi":"10.1080/14786435.2023.2171499","DOIUrl":"https://doi.org/10.1080/14786435.2023.2171499","url":null,"abstract":"ABSTRACT In this present study, we have theoretically investigated the effect of applied external electric field and non-resonant intense laser field, as well as the adjustable physical parameters (A, M, and η) of the system, on the linear and nonlinear of GaAs/GaAlAs cylindrical quantum dot. The confinement potential of the quantum dot is composed of the axial potential with a Razavy-type quantum well in the z-direction, and the cylindrical-type potential in the radial direction. To achieve this goal, the wave functions, and the corresponding eigenvalues of the electron are investigated by resolving the time-independent Schrödinger equation using the diagonalisation technique in terms of the effective mass approximation. The linear and nonlinear optical properties’ expressions have been calculated with the help of the compact density matrix method. Our numerical results show that by changing the A, M, and η parameters, we can see a blueshift or redshift in the total optical absorption coefficients (TOACs) and relative refractive index changes (RRICs). Additionally, they are redshifted, and their extrema increase as the radius increases. The increase in electric field or laser field intensities generates a strong displacement of the resonant peak position towards the higher energies, diminishes the TOACs magnitude, and shrinks RRICs extrema. The model potential used in the computation is important, and the study of it will be practical in the development and research of nanostructures systems.","PeriodicalId":19856,"journal":{"name":"Philosophical Magazine","volume":"59 1","pages":"693 - 711"},"PeriodicalIF":1.6,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84100140","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}

引用次数: 2

Equilibrium states of confined ions in two dimensions 二维受限离子的平衡态

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-02-03 DOI: 10.1080/14786435.2023.2165187

A. Mughal, S. Hutzler, D. Weaire

引用次数: 2

Thermodynamic behaviour of a D 2 + molecular complex in quantum rings under the combined effects of nonresonant intense laser field radiation and electric field 非共振强激光场辐射和电场联合作用下量子环中d2 +分子配合物的热力学行为

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-01-28 DOI: 10.1080/14786435.2023.2168082

Luis Gabriel Lafaurie Ponce, Yoder Alberto Suaza Tabares, M. Fulla, Jaime Andrés Pérez Taborda, Alba Graciela Ávila Bernal, Jairo Humberto Marín Cadavid

引用次数: 1

Zn–Al pack co-cementation on AISI 1020 steel: structural, mechanical and tribological appraisal AISI 1020钢的Zn-Al包共胶结:结构、力学和摩擦学评价

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-01-10 DOI: 10.1080/14786435.2022.2163316

W. Wang, Mengxin Guo, Caiyuan Sun, Jin Zhang, S. Li

引用次数: 0

Role of crystallographic orientation on the deformation behaviour of Ti-6Al-4V alloy during low cycle fatigue 晶体取向对Ti-6Al-4V合金低周疲劳变形行为的影响

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-01-10 DOI: 10.1080/14786435.2022.2163716

R. Vinjamuri, P. Dwivedi, R. Sabat, K. Dutta, M. Kumar, S. K. Sahoo

{"title":"Role of crystallographic orientation on the deformation behaviour of Ti-6Al-4V alloy during low cycle fatigue","authors":"R. Vinjamuri, P. Dwivedi, R. Sabat, K. Dutta, M. Kumar, S. K. Sahoo","doi":"10.1080/14786435.2022.2163716","DOIUrl":"https://doi.org/10.1080/14786435.2022.2163716","url":null,"abstract":"ABSTRACT\u0000 Low cycle fatigue (LCF) tests were carried out on Ti6Al4V alloy at room temperature for different strain amplitudes ranging from 0.5% to 2%. The microstructure and texture evolutions as a function of strain amplitude have been investigated in the present study. Cyclic softening behaviour was observed at all strain amplitudes, and it was found to increase with increasing the strain amplitude. The fatigue transition life was observed to be at 1.25% strain amplitude. Only type tensile twins were formed during the deformation, and this was found to be significant at higher strain amplitude of 2%. The grains along were appeared to be the twinning parent, and the twinned products were appeared along [0001]. The grains were further found to have substantial cyclic deformation than the other grains, such as and [0001]. The dominant texture was found along during the LCF tests. However, the sample at higher strain amplitude of 2% had also prominent [0001] texture along with texture. Fractographic examination revealed a dimple fracture surface at lower strain amplitude (0.5%), whereas a quasi-cleavage type fracture was observed at higher strain amplitudes (1% & 2%).","PeriodicalId":19856,"journal":{"name":"Philosophical Magazine","volume":"6 1","pages":"673 - 692"},"PeriodicalIF":1.6,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83153476","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}

引用次数: 0

An analytical model to ascertain the fragmentation of cementite lamella at lamellar fault sites 确定片层状断裂带渗碳体片层破碎的解析模型

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2023-01-10 DOI: 10.1080/14786435.2022.2162143

J. Maity

引用次数: 1

Photo-ionisation cross-section of a hydrogenic donor in a near triangular quantum well 近三角形量子阱中氢供体的光电离截面

IF 1.6 4区材料科学

Philosophical Magazine Pub Date : 2022-12-24 DOI: 10.1080/14786435.2022.2157505

S. Ramyapriya, M. Arulmozhi

引用次数: 0