Physics of the Solid State最新文献_第8页

GaSbBi Quantum Wells for Mid-Infrared Lasers 中红外激光器的GaSbBi量子阱

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-04-14 DOI: 10.1134/S1063783425600050

Youxiang Cao, Liyao Zhang

{"title":"GaSbBi Quantum Wells for Mid-Infrared Lasers","authors":"Youxiang Cao, Liyao Zhang","doi":"10.1134/S1063783425600050","DOIUrl":"10.1134/S1063783425600050","url":null,"abstract":"Mid-infrared lasers are widely used in civilian and military applications. Interband cascade lasers and quantum cascade lasers are the most popular mid-infrared semiconductor lasers, which is difficult for growth, with low efficiency. GaSbBi is formed by introducing a small number of Bi atoms into GaSb, which reduces the matrix bandgap of about 39 meV/Bi%. GaSbBi quantum well (QW) lasers have already been fabricated, lasing at 2.7 μm. GaSb1–xBix/AlyGa1–yAs0.08ySb1–0.08y QWs on GaSb substrate is proposed to fabricated mid-infrared lasers. The band structures of GaSbBi/AlGaAsSb QWs with different Bi contents, Al contents and well thicknesses are calculated. Light emission from 1.4 to 6.2 μm can be achieved from GaSbBi QWs with well thicknesses of 5–20 nm, Bi contents of 0.01–0.15 and Al contents of 0–1.0. A 5 µm laser was designed with a 15 nm GaSbBi0.141/Al0.5Ga0.5As0.04Sb0.96 QW acting as the active region and the device performance was further calculated. The optical confinement factor is about 5.45% and the threshold current density is 393 A/cm2.","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"67 4","pages":"253 - 258"},"PeriodicalIF":0.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830677","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

Carbonaceous Materials’ Raman Scattering Is a Result of Self-SERS Effect 碳质材料的拉曼散射是自sers效应的结果

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-04-14 DOI: 10.1134/S1063783424602303

I. Yu. Prosanov, V. A. Volodin

引用次数: 0

Filtering and Guiding Electromagnetic Waves with a Fibonacci-Inspired Staircase Comb-Like Structure 利用受斐波那契启发的阶梯梳状结构过滤和引导电磁波

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-04-14 DOI: 10.1134/S1063783425600165

Younes Errouas, Ilyass El Kadmiri, Youssef Ben-Ali, Driss Bria

引用次数: 0

Photo-Degradation of Dexamethasone through Radical-Based Advanced Oxidation Processes Using UV/H2O2 and Fe2+/UV/H2O2 Systems 利用紫外线/H2O2 和 Fe2+/UV/H2O2 系统，通过基于自由基的高级氧化过程光降解地塞米松

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-04-14 DOI: 10.1134/S1063783425600670

T. Isac-Gutul, E. Tutovan, D. L. Nika

{"title":"Photo-Degradation of Dexamethasone through Radical-Based Advanced Oxidation Processes Using UV/H2O2 and Fe2+/UV/H2O2 Systems","authors":"T. Isac-Gutul, E. Tutovan, D. L. Nika","doi":"10.1134/S1063783425600670","DOIUrl":"10.1134/S1063783425600670","url":null,"abstract":"We report on the effective degradation of dexamethasone (DEX) using systems that generate ·OH radicals based on advanced oxidation processes, specifically UV/H2O2 and photo-Fenton systems. The effects of such parameters as pH (3–11), H2O2 concentration (0.85–68 mg/L) and initial DEX concentration (20–80 mg/L) on degradation were investigated at the temperature range 5–30°C. The efficiency of degradation degree in UV/H2O2 system was found to be 90.92% under the optimal conditions: pH 7, after 8 min, DEX concentration of 40 mg/L, H2O2 concentration of 0.85 mg/L, UV radiation of 1000 W and at the temperature of 25°C. Usage of hydrogen peroxide as an oxidant becomes an additional source of ·OH radicals and reinforces oxidation of the considered drugs. Advanced oxidation technologies, including UV/H2O2, sa-tisfy a pseudo second-order reaction kinetics model, the values of the constant are between 0.386 and 1.249 L/(mg min). The degradation process of DEX in the photo-Fenton system was studied at different Fe2+/H2O2 ratios, between 1 : 10 and 1 : 80, the optimal ratio was found to be 1 : 50 under the following conditions: H2O2 concentration of 2.5 × 10–3 mg/L, DEX concentration of 40 mg/L, at pH 4, Fe2+ concentration of 0.5 × 10–4 mg/L, at a temperature of 25°C. The addition of Fe2+ ions as a catalyst allowed to increase the degradation degree of DEX in the photo-Fenton system up to 99.87%.","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"67 4","pages":"292 - 301"},"PeriodicalIF":0.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830878","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 Nanoparticle Concentration on the Crystallinity, Vibrational Dynamics, and Morphology of PS/TiO2 Nanocomposites 纳米粒子浓度对PS/TiO2纳米复合材料结晶度、振动动力学和形貌的影响

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-04-14 DOI: 10.1134/S1063783425600608

A. Rahimli, M. Jafarov

{"title":"Effect of Nanoparticle Concentration on the Crystallinity, Vibrational Dynamics, and Morphology of PS/TiO2 Nanocomposites","authors":"A. Rahimli, M. Jafarov","doi":"10.1134/S1063783425600608","DOIUrl":"10.1134/S1063783425600608","url":null,"abstract":"This study investigates the impact of rutile-phase TiO2 nanoparticles on the structural, morphological, and vibrational properties of polystyrene (PS)-based nanocomposites at TiO2 concentrations of 3, 5, and 10%. The nanocomposites were prepared by mixing solutions and hot pressing. XRD revealed increased crystallinity at higher TiO2 content, with crystallite sizes ranging from 5.77 to 8.05 nm. TEM showed well-dispersed nanoparticles (30–50 nm) in the 3% TiO2 samples, with agglomeration increasing at 5% TiO2. AFM indicated a rougher surface for the 3% TiO2 (90–160 nm) and smoother, more homogeneous surfaces for the 10% TiO2 (50–130 nm), which can be attributed to improved dispersion. Raman spectroscopy identified TiO2 peaks (447, 618, and 905 cm–1), which intensified with increasing TiO2 content, while shifts in the PS peaks suggested interactions between the matrix and nanoparticles. These results emphasize the critical role of dispersion and TiO2 loading in determining the properties of the PS nanocomposite.","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"67 4","pages":"318 - 323"},"PeriodicalIF":0.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830894","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

Vibrational Properties and the Lattice Specific Heat of an Alternating Iron Chain Structure Compound CsFeS2 交替铁链结构化合物CsFeS2的振动特性和晶格比热

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-04-14 DOI: 10.1134/S1063783424602339

Airat Kiiamov, D. Tayurskii

{"title":"Vibrational Properties and the Lattice Specific Heat of an Alternating Iron Chain Structure Compound CsFeS2","authors":"Airat Kiiamov, D. Tayurskii","doi":"10.1134/S1063783424602339","DOIUrl":"10.1134/S1063783424602339","url":null,"abstract":"The alternating chain-structure compound of CsFeS2 consists of [FeS2]n chains characterized with two different within chains inter-atom distances of average value of 2.7 Å. That feature sets the CsFeS2 compound apart from the family of similar compounds like AFeCh2 (A—K, Rb; Ch—S, Se) which show all intra-chain Fe–Fe distances are identical within a compound. The one of well elucidating property of a solid’s magnetic system is a temperature dependence of its specific heat. It allows estimating the interaction pattern in different regimes and to distinguish the types of magnetic phase transitions. So, the comparative studies of all the mentioned compounds might further shed a light on the complex magnetic properties of all that compounds. So, in the present study, the phonon densities of states were calculated within direct approach of quasi-harmonic approximation. We used phonon density of states to calculate lattice contribution to the specific heat. The results of the present paper could be used in further analysis of thermodynamic, optical and magnetic properties of CsFeS2 compound.","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"67 4","pages":"269 - 272"},"PeriodicalIF":0.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830874","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

Ab Initio Calculation of Structural, Electronic, Optical, and Elastic Properties of the Ternary Alloy YBi1–xPx with Their Binary Compounds YBi and YP 三元合金YBi1-xPx及其二元化合物YBi和YP的结构、电子、光学和弹性性质的从头计算

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-03-06 DOI: 10.1134/S106378342460225X

I. Charef, S. Touam, A. Boumaza, N. Mounis, F. Z. Khelifati, M. Gacem, I. Bendjedide, H. Meradji, S. Ghemid

{"title":"Ab Initio Calculation of Structural, Electronic, Optical, and Elastic Properties of the Ternary Alloy YBi1–xPx with Their Binary Compounds YBi and YP","authors":"I. Charef, S. Touam, A. Boumaza, N. Mounis, F. Z. Khelifati, M. Gacem, I. Bendjedide, H. Meradji, S. Ghemid","doi":"10.1134/S106378342460225X","DOIUrl":"10.1134/S106378342460225X","url":null,"abstract":"In order to simulate the structural, electronic, optical and elastic properties of the ternary alloys YBi1–xPx as a function of phosphorus concentration in the sodium chloride (NaCl) phase, we employed the full-potential linearized augmented plane wave (FP-LAPW) method within the density functional theory (DFT) framework, as implemented in the WIEN2K simulator. The potentials were obtained using the advanced Wu–Cohen generalized gradient (WC-GGA) and modified Becke–Johnson (mBJ) approximations. For the parent compounds YBi and YP, our calculated structural, electronic, and elastic properties align well with existing experimental and theoretical data. Furthermore, we reported and analyzed some predicted results about the ternary alloys YBi1–xPx including lattice constant, bulk modulus, band structure, real and imaginary parts of the dielectric function, elastic constants, shear modulus, anisotropy factor and Young’s modulus.","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"67 3","pages":"181 - 195"},"PeriodicalIF":0.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564564","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 Propagation of Spin Excitations in Hexagonal Ferromagnetic Semiconductor Superlattice Nanowires at Low Temperatures 低温下六方铁磁半导体超晶格纳米线中自旋激发的传播

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-03-06 DOI: 10.1134/S1063783424602200

V. S. Tagiyev, V. A. Tanriverdiyev, E. A. Akhundova, I. N. Ibrahimov, N. A. Abdullayev

引用次数: 0

Hydrothermal Synthesis of ZrO2 Nanoparticles: Study on Structural, Optical, Morphology Properties and Photocatalyst Activity 水热合成纳米ZrO2：结构、光学、形貌及光催化剂活性研究

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-03-06 DOI: 10.1134/S1063783424602194

A. Sathya, D. Benny Anburaj, V. Porkalai, A. Muthuvel, Nabil Al-Zaqri

{"title":"Hydrothermal Synthesis of ZrO2 Nanoparticles: Study on Structural, Optical, Morphology Properties and Photocatalyst Activity","authors":"A. Sathya, D. Benny Anburaj, V. Porkalai, A. Muthuvel, Nabil Al-Zaqri","doi":"10.1134/S1063783424602194","DOIUrl":"10.1134/S1063783424602194","url":null,"abstract":"In this study, zirconium oxide (ZrO2) nanoparticles were synthesized using the hydrothermal method at sintering temperature of 400, 500, 600, and 700°C. The synthesized nanoparticles were characterized by various techniques, including UV-Visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), Photoluminescence (PL), Brunauer–Emmett–Teller (BET), Electron Spin Resonance (ESR), X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM). The XRD pattern confirmed the formation of tetragonal phase for all sintering temperatures, with the crystal size reaching a minimum of 5.5 nm at 600°C and slightly increasing to 5.9 nm at 700°C. The blue shift of the absorption edge from 372 nm at 400°C to 376 nm at 700°C implies a modification in the particle size. SEM and EDX confirmed the uniform distribution and high purity of the nanoparticles. FT-IR analysis identified the absorption peaks of the Zr–O–Zr extension with moisture content. The BET isotherm demonstrates gradual adsorption at low pressure, with sharp rise at P/P0 = 1, indicating capillary condensation in mesopores. Photocatalytic degradation of methyl blue (MB) dye under sunlight irradiation demonstrated high efficiency, with ZrO2 synthesized at 600°C exhibiting the best photocatalytic activity. The catalyst also showed good reusability, with only a slight decrease in degradation efficiency after four cycles. Overall, the study demonstrates the potential of ZrO2 nanoparticles as effective photocatalysts for environmental remediation.","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"67 3","pages":"196 - 206"},"PeriodicalIF":0.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564565","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

Study of Surface Plasmon Polaritons in Ferroelectric Nanowaveguides with Ag/LiNbO3 Interfaces 银/LiNbO3界面铁电纳米波导中表面等离子体激元的研究

IF 0.9 4区物理与天体物理

Physics of the Solid State Pub Date : 2025-03-06 DOI: 10.1134/S1063783424602170

Gishamol Mathew, P. G. Louie Frobel

引用次数: 0