Crystal Research and Technology最新文献_第2页

Effect of Acidic Polymers and Impurity Microparticles on CuSO4 Nucleation via Nonphotochemical Laser Induced Nucleation 酸性聚合物和杂质微粒对非光化学激光诱导CuSO4成核的影响

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-29 DOI: 10.1002/crat.202400219

Yuhao Cheng, Xiongfei Xie, Shuai Li, Qingqing Qiu, Yao Liu

{"title":"Effect of Acidic Polymers and Impurity Microparticles on CuSO4 Nucleation via Nonphotochemical Laser Induced Nucleation","authors":"Yuhao Cheng, Xiongfei Xie, Shuai Li, Qingqing Qiu, Yao Liu","doi":"10.1002/crat.202400219","DOIUrl":"https://doi.org/10.1002/crat.202400219","url":null,"abstract":"Crystal morphology in supersaturated copper sulfate (CuSO4) solutions in the presence of acidic polymers is investigated using the non-photochemical laser-induced nucleation (NPLIN) technique. The solubility of copper sulfate in different solvents is measured using the continuous addition method, which is detailed in the Supporting Information. The optimum range of laser power is selected based on a suitable nucleation probability and desirable crystalline morphology. Two different forms of copper sulfate crystals are obtained by a nanosecond pulsed laser with the wavelength of 532 nm. The experimental results show that the addition of impurities increases the probability of nucleation of copper sulfate crystals during nanosecond laser pulse irradiation, which is consistent with the nanoparticle heating mechanism for NPLIN; the addition of acidic polymer can control crystal growth rate of each crystal surface. All CuSO4 crystals obtained from the technique of NPLIN are revealed as copper sulfate pentahydrate (CuSO4·5H2O) through powder X-ray diffraction analysis. After the sample solution is added with polyacrylic acid, the crystalline morphology changes from polyhedral 3D morphology to long rod morphology. Based on this, different kinds of impurities and acidic polymers are applied in order to achieve a controllable approach on nucleation probability and crystalline morphology of CuSO4·5H2O crystals. The effects of impurities and acidic polymers on crystals are analyzed to study the underlying mechanism of NPLIN and morphological differences.","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":"60 7","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598482","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

The Effects of the Interstitial Cai on the Electronic Structure and Laser Damage for KDP Crystals: A First-Principles Study 间隙Cai对KDP晶体电子结构和激光损伤影响的第一性原理研究

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-26 DOI: 10.1002/crat.202400243

Longfeng Zhao, Wei Hong, Tingyu Liu, Hao Hu, Jiachen Zhu

引用次数: 0

Novel Cocrystal of Palmatine Chloride with Improved Hygroscopic Stability and Antimicrobial Potency: Experimental and Theoretical Studies 具有较好吸湿稳定性和抗菌效能的新型氯化巴马汀共晶：实验和理论研究

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-26 DOI: 10.1002/crat.202400268

Xiao-Chen Sun, Xiao-Xue Wang, Yu-Wei Song, Xin-Ru Zhu, Roudaina Elmidaoui, Zhi-Long Zhao, Meng-Xuan Dai, Xiang Xu, Fu-Bo Tian, Ze Li, Yan-Jiao Xu

{"title":"Novel Cocrystal of Palmatine Chloride with Improved Hygroscopic Stability and Antimicrobial Potency: Experimental and Theoretical Studies","authors":"Xiao-Chen Sun, Xiao-Xue Wang, Yu-Wei Song, Xin-Ru Zhu, Roudaina Elmidaoui, Zhi-Long Zhao, Meng-Xuan Dai, Xiang Xu, Fu-Bo Tian, Ze Li, Yan-Jiao Xu","doi":"10.1002/crat.202400268","DOIUrl":"https://doi.org/10.1002/crat.202400268","url":null,"abstract":"To highlight the benefits of the cocrystallization technique in enhancing the pharmaceutical characteristics and antimicrobial effect of palmatine chloride (PCl), a novel cocrystal of PCl with 4-aminobenzoic acid (AMA), abbreviated as PCl-AMA, is prepared to employ the combination of water-assisted grinding and solvent evaporation method. Single-crystal X-ray diffraction analysis displays that the formation of the PCl-AMA cocrystal results in the replacement of two water molecules in the crystal structure of PCl·3H2O by 4-aminobenzoic acid. The two chloride ions and two water molecules derive from palmatine chloride constituted an R44(8) ring structure. Furthermore, two AMA chains are interconnected through the four-membered ring, continuously extending to form a parallel modular framework. The palmatine cations are arranged perpendicularly between the parallel modules, serving as a filling structure. This altered crystal structure imparted improved physicochemical properties to PCl, exhibiting enhanced moisture stability and reduced solubility. More intriguingly, the antimicrobial potency of the PCl-AMA cocrystal is enhanced owing to the auxiliary antibacterial effect of 4-aminobenzoic acid.","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":"60 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256508","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

Structural, Optical and Photocatalytic Properties of Bi2O3/Mn3O4 Nanocomposites Bi2O3/Mn3O4纳米复合材料的结构、光学和光催化性能

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-25 DOI: 10.1002/crat.202400278

Ejaz Muhammad, Tariq Jan, Arslan Bashir, Zahid Farooq

{"title":"Structural, Optical and Photocatalytic Properties of Bi2O3/Mn3O4 Nanocomposites","authors":"Ejaz Muhammad, Tariq Jan, Arslan Bashir, Zahid Farooq","doi":"10.1002/crat.202400278","DOIUrl":"https://doi.org/10.1002/crat.202400278","url":null,"abstract":"This research aims to develop binary Bi2O3/Mn3O4 heterostructures for the mineralization of pollutants in water. For this purpose, pure Bi2O3, Mn3O4, and Bi2O3/Mn3O4 nanocomposite samples are synthesized. Structural analysis exhibits the formation of a mixed-phase solid oxide solution. This is verified via FTIR spectroscopy where an additional peak observed at 723 cm−1 indicating Bi─O─Mn stretching vibration. The binary Bi2O3/Mn3O4 nanocomposite has increased visible light absorption and narrow bandgap when compared to pure Bi2O3. The synthesized Bi2O3/Mn3O4 nanocomposite exhibits 76.4% degradation of methylene Blue (MB) under solar light irradiation with a pseudo-first-order rate constant of 0.00572 min−1 superior to pure Bi2O3 and Mn3O4 nanoparticles. This significant increase in the photocatalytic activity of Bi2O3/Mn3O4 nanocomposite is due to the direct z-scheme mechanism of charge transfer between Bi2O3 and Mn3O4 through greater redox potential and generation of surface defects that induce additional active sites for the adsorption of organic dye which trap photoinduced electrons and holes resulting a reduction in electron–hole recombination rate.","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":"60 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256535","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

Supramolecular Isomerism in Cu(II) Pyrazinecarboxylate Coordination Polymers 铜（II）吡嗪甲酸酯配位聚合物的超分子异构体

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-25 DOI: 10.1002/crat.202500032

Olga Capbătut, Victor Ch. Kravtsov, Yurii Chumakov, Svetlana G. Baca

{"title":"Supramolecular Isomerism in Cu(II) Pyrazinecarboxylate Coordination Polymers","authors":"Olga Capbătut, Victor Ch. Kravtsov, Yurii Chumakov, Svetlana G. Baca","doi":"10.1002/crat.202500032","DOIUrl":"https://doi.org/10.1002/crat.202500032","url":null,"abstract":"A new coordination polymer based on Cu(II) and pyrazinecarboxylic acid (pycaH), namely [Cu(pyca)2]n (1β), has been obtained by a two-step synthesis and structurally characterized by single-crystal X-ray diffraction analysis. In the crystal, the planar [Cu(pyca)2] monomeric units are extended into a 2D coordination polymer structure due to the coordination of the oxygen atom of the carboxylic group of two adjacent monomeric units in apical positions resulting in square-bipyramidal coordination surrounding of the copper atom. Compound 1β represents a novel supramolecular isomer compared to another one documented in the Cambridge Structural Database under the refcodes BEYPUQ (1α), where the same monomeric units are linked to a 1D coordination polymer. Hirschfeld surface analysis is performed to gain additional insight into the interactions responsible for crystal packing in both supramolecular isomers. The examination of 2D fingerprint plots has elucidated the most significant intermolecular interactions involved in the stabilization of the crystal network resulting from C─H…O, C─H…N, and C─H…C interactions. DFT calculations of the lattice energies demonstrate a higher degree of stability for supramolecular isomer 1β relative to 1α.","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":"60 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256556","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

Impact of Inhomogeneous Offcut Angles of GaN Native Substrates on Lateral Current Modulation in AlGaN Barrier Layers 氮化镓原生衬底非均匀边切角对氮化镓势垒层横向电流调制的影响

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-24 DOI: 10.1002/crat.202400245

Sepideh Faraji, Elke Meissner, Sven Besendörfer, Christian Miersch, Roland Weingärtner, Franziska C. Beyer, Jochen Friedrich

{"title":"Impact of Inhomogeneous Offcut Angles of GaN Native Substrates on Lateral Current Modulation in AlGaN Barrier Layers","authors":"Sepideh Faraji, Elke Meissner, Sven Besendörfer, Christian Miersch, Roland Weingärtner, Franziska C. Beyer, Jochen Friedrich","doi":"10.1002/crat.202400245","DOIUrl":"https://doi.org/10.1002/crat.202400245","url":null,"abstract":"A comprehensive investigation on the uniformity of offcut angles on vicinal GaN substrate surfaces and their impact on both epitaxial growth and electrical characteristics of AlGaN/GaN heteroepitaxial structures is presented. A nearly inverse linear correlation is noted between the substrate's offcut angle and the Al mole fraction in the AlGaN layer. T During AlGaN growth, Ga atoms are obviously incorporated more to smaller atomic terraces as the Al atoms. Localized, non-uniform current conduction channels along the edges of bunched steps were observed. A larger substrate offcut results in higher occurrence of stripes with higher current flow. This affects the Schottky barrier height of diodes that contain different densities of such regions. Ni/Au/AlGaN/GaN Schottky barrier diodes showed a decrease in the average Schottky barrier height on such places. An offcut angle difference from 0.29° to 0.42° yields an approximately 13 meV reduction in average Schottky barrier height. This highlights the significant impact that the transition in surface morphology even at the initial stages could exert on the electrical characteristics of the Schottky barrier diodes. Consequently, it becomes crucial to accurately assess the offcut angle variations over the whole wafer to align epitaxy with the specific performance requirements of the target device.","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":"60 6","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/crat.202400245","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256583","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}

引用次数: 0

An Investigation on Structure, AC Conductivity, and Dielectric Characteristics of Ni0.6Cu0.2Zn0.2Pd3xFe2-2xO4 (x ≤ 0.1) Nanospinel Ferrites Ni0.6Cu0.2Zn0.2Pd3xFe2-2xO4 （x≤0.1）纳米尖晶石铁氧体的结构、交流电导率和介电特性研究

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-23 DOI: 10.1002/crat.202500008

M.A. Almessiere, A. Baykal, Sagar E. Shirsath, A.V. Trukhanov, A. Demir Korkmaz, A. Mihmanli

{"title":"An Investigation on Structure, AC Conductivity, and Dielectric Characteristics of Ni0.6Cu0.2Zn0.2Pd3xFe2-2xO4 (x ≤ 0.1) Nanospinel Ferrites","authors":"M.A. Almessiere, A. Baykal, Sagar E. Shirsath, A.V. Trukhanov, A. Demir Korkmaz, A. Mihmanli","doi":"10.1002/crat.202500008","DOIUrl":"https://doi.org/10.1002/crat.202500008","url":null,"abstract":"Partially palladium (Pd) substituted Ni0.6Cu0.2Zn0.2Pd3xFe2-2xO4 (x ≤ 0.1) nano-spinel ferrites (NCZPdx (x ≤ 0.1) NSFs) have been manufactured via sol–gel combustion route. The phase of all samples has been endorsed by XRD diffraction analysis. Their crystallite size (DXRD) were estimated within 36–72 nm range. Morphology and the chemical composition have been confirmed by EDX (Energy Dispersive X-ray) and SEM-TEM (Scanning-Transmission Emission Microscopy) respectively. Complex impedance spectroscopy (CIS) was utilized to explore the dielectric characteristics within 20 to 120 ºC temperature and from 1 to 106 Hz frequency ranges. The two-dimentional frequency and temperature dependencies of the real and imaginary components of permittivity (ε/ and ε//), the dielectric loss tangent (tan(δ)), the real and imaginary parts of dielectric modulus (M/ real and M//), σ ac-conductivity (s), the real and imaginary components of impedance (Z/ and Z//), along with the experimental Nyquist diagrams Z//(Z/), were constructed and illustrated for all samples. The main feature of the frequencybehavior of the tan(δ) dielectric loss tangent is the presence of pronounced maxima depending on both frequency and temperature. The maximum value of the tan(δ) observed for the significantly doped x = 0.06-0.10 samples. The Pd substitution changes the electron relaxation and microwave absorption resonance.","PeriodicalId":48935,"journal":{"name":"Crystal Research and Technology","volume":"60 7","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598769","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

Enhanced Optical, Electrical and Dielectric Properties of WO3 Stacks Via Indium Nanosheets 铟纳米片增强WO3堆叠的光学、电学和介电性能

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-22 DOI: 10.1002/crat.202400276

Najla. M. Khusayfan, A.F. Qasrawi, Hazem K. Khanfar, Seham R. Alharbi

引用次数: 0

Elimination of Edge Defects in SiC Crystals Grown Through Physical Vapor Transport Method 物理气相输运法生长SiC晶体边缘缺陷的消除

IF 1.5 4区材料科学

Crystal Research and Technology Pub Date : 2025-04-21 DOI: 10.1002/crat.202500028

Jingcheng Feng, Hao Xue, Gang Dong, Yujian Wang, Chengyuan Sun, Yunfei Shang, Zuotao Lei, Dalei Meng, Chunhui Yang, Yingmin Wang

引用次数: 0

Issue Information: Crystal Research and Technology 4'2025 发行信息：晶体研究与技术4'2025