Journal of Crystal Growth最新文献

{"title":"Influence of dispersion of a new type whole crystals seed on crystallization process and sugar quality","authors":"Serhii Volodymyrovych Tkachenko ,&nbsp;Tamila Volodymyrivna Sheiko ,&nbsp;Olena Mykhailivna Anisimova ,&nbsp;Vasyl Viktorovych Petrenko ,&nbsp;Kostiantyn Dmytrovych Skoryk ,&nbsp;Olha Illivna Dzhohan ,&nbsp;Liubomyr Mykhailovych Khomichak ,&nbsp;Inha Vadymyrivna Kuznietsova","doi":"10.1016/j.jcrysgro.2024.127909","DOIUrl":"10.1016/j.jcrysgro.2024.127909","url":null,"abstract":"<div><div>The aim of the work was to study effectiveness of the influence of a new type crystal seed with different microcrystals dispersion on the process of sucrose crystallization and sugar quality. The dispersion of microcrystals of the crystal-forming agent with whole crystals was determined and curves of their differential distribution were presented, which showed the average particle sizes of the “Ester K 01” are 18.2 μm and 46.4 μm. The morphological characteristics were determined of particles of the whole crystals seed and the seed slurry produced at a sugar factory. The duration of massecuite boiling was investigated and a comparative characterization of the quality indicators of the resulting massecuite, mother liquor, and sugar was given depending on the use of the whole crystals seed with different dispersion of microcrystals in comparison with the factory slurry. Microphotographs of sugar crystals in the massecuite were obtained with their size recorded 5, 10 and 20 min after the input of various seeds. The morphology of sugar crystals was studied in the finished massecuite. A comparison is given of the granulometric composition of sugar crystals obtained with crystal-forming agents with different dispersion. It was found based on the results of the study that when using the “Ester K 01” (46.4 μm) in thick juice with high turbidity the corresponding crystals are formed faster in the total amount of the massecuite. It was also found that there is a kind of blocking of the process of adjacent growth of crystals from the particles of impurities of thick juice with high turbidity. This contributes to the formation of more uniform, homogeneous crystals of the correct shape. The results are presented in the article of tests of the whole crystal seed “Ester K 01” (18.2 μm) and “Ester K 01” (46.4 μm) at sugar factories using the method of working on the seed magma and the method of shock crystallization respectively. The dependences were obtained of the average linear size, the amount of sugar of the 0.65 mm fraction, the coefficient of variation and the coefficient of uniformity of sugar crystals on the consumption of the whole crystals seed “Ester K 01” (crystal size 46.4 μm). The regression equation was developed in natural form for the process of sucrose shock crystallization. It was established the rational consumption of the crystal-forming agent “Ester K 01” (crystal size 46.4 μm), which ensures the effective crystallization of sucrose for the process of crystallization by the shock induced method.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127909"},"PeriodicalIF":1.7,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419073","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}

{"title":"The effect of magnesium impurities on the optical and spectral characteristics of calcium orthovanadate single crystals doped with chromium and manganese","authors":"I.S. Voronina ,&nbsp;M.E. Doroshenko ,&nbsp;E.E. Dunaeva ,&nbsp;S.S. Zykova ,&nbsp;L.D. Iskhakova ,&nbsp;L.I. Ivleva","doi":"10.1016/j.jcrysgro.2024.127908","DOIUrl":"10.1016/j.jcrysgro.2024.127908","url":null,"abstract":"<div><div>The effect of magnesium co-doping on growth conditions, crystal composition, optical and spectral properties of manganese or chromium-doped Ca₃(VO₄)₂ (CVO) crystal was studied. The single crystals were grown by the Czochralski method. Effective segregation coefficients of manganese and chromium in the CVO matrix with magnesium co-doping were calculated. A redistribution of the absorption lines intensities was observed in the absorption spectra of CVO:Mn:Mg and CVO:Cr:Mg. Low (15 K) temperature fluorescence measurements confirmed that co-doping CVO crystal with Mg ions leads to the redistribution of Mn ions concentration in different valence states, but does not cause changes in their spectral properties. In the presence of magnesium, additional annealing of the materials resulted in a slower reduction of the valence state of doping ions and a noticeable change in crystal coloration. All investigated impurities have practically no effect on the specific ferroelectric domain structure of CVO.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127908"},"PeriodicalIF":1.7,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419070","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}

{"title":"Quantum chemistry − guided design of luminescent Triphenylene − based co-crystals: Unveiling heavy atom for enhanced fluorescence lifetime","authors":"Yidan Xie,&nbsp;Pengfei Wu,&nbsp;Wenxiu Yao,&nbsp;Xinyu Shen,&nbsp;Shuwei Xia,&nbsp;Liangmin Yu","doi":"10.1016/j.jcrysgro.2024.127907","DOIUrl":"10.1016/j.jcrysgro.2024.127907","url":null,"abstract":"<div><div>This study employed quantum chemical methods to predict and synthesize three luminescent cocrystals. Utilizing Triphenylene as the electron donor and 1,2,4,5-tetracyanobenzene (TCNB), 2,3,5,6-tetrafluoroterephthalonitrile (TFP), and 2,3,5,6-tetrachloroterephthalonitrile (TCP) as acceptors, the structures and internal interactions of these cocrystals were analyzed. The predominant interactions observed were charge transfer, hydrogen bonding, and π-π interactions. Notably, the Triphenylene-TCP cocrystal exhibited a significantly extended fluorescence lifetime compared to the other two. Further investigations, employing time-dependent density functional theory (TD-DFT) on Triphenylene-TCP, suggested that intersystem crossing (ISC) and reverse intersystem crossing (RISC) mechanisms contribute to the prolonged fluorescence lifetime. This study offers valuable insights into the design of supramolecular cocrystals to enhance the performance of organic fluorescent materials.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127907"},"PeriodicalIF":1.7,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419156","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}

{"title":"Enhancing phenolic compound recovery from olive oil mill wastewater through optimized cryoconcentration","authors":"Youness El Haimer ,&nbsp;Anouar Rich ,&nbsp;Sara Mountadar ,&nbsp;Mostapha Siniti ,&nbsp;Soufiane Tahiri ,&nbsp;Mohammed Mountadar ,&nbsp;Denis Mangin","doi":"10.1016/j.jcrysgro.2024.127904","DOIUrl":"10.1016/j.jcrysgro.2024.127904","url":null,"abstract":"<div><div>This work aims to develop a process for treating olive mill wastewater (OMW) using cryoconcentration. The experiments are carried out in two stages: the freezing stage, producing an ice at temperatures between −16 °C and −24 °C, and the sweating stage, conducted at room temperature. This second step consists in purifying in depth the ice by melting the impure zones of concentrated solutions pockets. Three to five liquid fractions with decreasing concentrations of solute were then collected. The physicochemical analysis indicates that as the initial concentration of the solution increases, the concentration efficiency in the first fraction decreases, and the final ice block is less pure. The parametric study, conducted using the Response Surface methodology (RSM), highlighted the effects of initial concentration, freezing temperature and the number of liquid fraction applied during the partial melting of the ice on the concentration of total phenols in the first liquid fraction obtained. The initial concentration and the fractional partial melting step have a very significant impact. However, within the studied range of cooling temperatures, −16 °C results in a slight increase in the recovery efficiency of phenolic compounds compared to −24 °C. Overall, the results demonstrate the feasibility of the process, which enables the recovery of cryoconcentrated solutions rich in total phenols and the production of good-quality water.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127904"},"PeriodicalIF":1.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357240","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}

{"title":"Synthesis and field emission characterization of La-doped SiC nanowires using graphite powder as carbon source","authors":"Li Weidong ,&nbsp;Zhang Meng","doi":"10.1016/j.jcrysgro.2024.127901","DOIUrl":"10.1016/j.jcrysgro.2024.127901","url":null,"abstract":"<div><div>Lanthanum (La)-doped SiC nanowires (NMs) were synthesized via a carbon thermal reduction process using different graphite powders, while milled Si-SiO2 mixed powders were employed as the silicon source. The identification of the products as β-SiC were supported by Select-area electron diffraction (SAED) and X-ray diffraction (XRD) analysis. The field emission results demonstrated that the turn-on field reached a minimum value of approximately 2.3 V/μm when the graphite content ranged from 2.5 g–3 g. The product exhibited higher density at this stage, accompanied by an increase in nanowire diameter and a tendency toward straightness. The energy spectrum analysis revealed a significant increase in the lanthanum content within the nanowires, with the atomic percentage rising from 0.05 to 0.26–0.27. The synergistic effect of morphology and La improved the field emission performance of the product. The findings may offer valuable insights for enhancing the field emission performance of one-dimensional nanomaterials.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127901"},"PeriodicalIF":1.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419069","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}

{"title":"Corrigendum to “Enabling MOCVD production on next generation 150 mm Indium Phosphide wafer size” [J. Cryst. Growth 643 (2024) 127793]","authors":"I. Miccoli,&nbsp;G. Simkus,&nbsp;H. Larhrib,&nbsp;T. Korst,&nbsp;M. Mukinovic,&nbsp;J. Holzwarth,&nbsp;M. Heuken","doi":"10.1016/j.jcrysgro.2024.127899","DOIUrl":"10.1016/j.jcrysgro.2024.127899","url":null,"abstract":"","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127899"},"PeriodicalIF":1.7,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579024","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}

{"title":"Microstructural characterization of InP films on SOI (001) substrates grown by selective lateral metal-Organic vapor-Phase epitaxy","authors":"Hiroya Homma,&nbsp;Hiroki Sugiyama,&nbsp;Tatsurou Hiraki,&nbsp;Tomonari Sato,&nbsp;Shinji Matsuo","doi":"10.1016/j.jcrysgro.2024.127903","DOIUrl":"10.1016/j.jcrysgro.2024.127903","url":null,"abstract":"<div><div>To achieve monolithic integration of Si-waveguide-coupled III-V laser diodes, it is important to establish a method of growing high-quality III-V materials on large Si wafers without a thick buffer layer. Here, the lateral aspect ratio trapping (LART) method has recently been attracting attention because of its potential for integrating large-area and high-quality III-V films on (001)-oriented silicon-on-insulator (SOI) substrates. In this paper, we report a detailed microstructural analysis of InP films that were fabricated on (001) SOI substrates by using metal–organic vapor-phase epitaxy and the LART method. The obtained films had an area of around 50 x 4 μm2, which is large enough for them to be used as templates in photonics device fabrication. Transmission electron microscopy revealed that propagation of threading dislocations in the Si/InP interface region was suppressed. However, the films tended to contain other planar defects, such as stacking faults, rotational twin boundaries, and anti- phase boundaries. We discuss the mechanisms underlying the generation of these defects and approaches to suppressing their formation.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127903"},"PeriodicalIF":1.7,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357242","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}

{"title":"Growth, optical and thermal properties of YbxSm1-xCa4O(BO3)3 crystals","authors":"Chen Yang,&nbsp;Linwen Jiang,&nbsp;Yanqing Zheng,&nbsp;Tuanjie Liang,&nbsp;Zhongjun Tian,&nbsp;Zhigang Sun","doi":"10.1016/j.jcrysgro.2024.127902","DOIUrl":"10.1016/j.jcrysgro.2024.127902","url":null,"abstract":"<div><div>Yb_xSm_1-xCOB (x = 0.1, 0.2) crystals were grown by the Bridgman method for the first time. The purpose of this paper is to evaluate the application prospect of Yb:SmCOB crystal in quasi-parametric chirped pulse amplification (QPCPA) and frequency-doubling laser. The phase structure, thermal properties and optical properties of Yb:SmCOB were studied, and the density of states of SmCOB crystal was calculated by first-principles. The effective segregation coefficient <em>K_eff</em> of Yb_0.1Sm_0.9COB and Yb_0.2Sm_0.8COB crystals are 0.89 and 0.88, respectively. The thermal diffusivity and thermal conductivity of Yb:SmCOB decrease with increasing temperature. The specific heat increases with the increase of temperature and eventually tends to be constant. The specific heat of Yb:SmCOB crystal is greater than 0.70 J/(g·K) at room temperature. The transmittance of Yb:SmCOB crystal reaches 87 % in the range of 500 ∼ 900 nm. With the increase of Yb³⁺ doping concentration, the UV absorption cut-off edge is red shifted. The frequency doubling emission peak of Yb:SmCOB crystal at 490 nm was measured by 980 nm laser. Yb:SmCOB has the characteristics of high transmittance and high specific heat, and has application potential in laser frequency doubling and QPCPA.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127902"},"PeriodicalIF":1.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357241","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}

{"title":"A four-way coupled numerical investigation of draft tube baffled crystallizer","authors":"Jamal Darand,&nbsp;Alireza Fashami,&nbsp;Ali Jafarian","doi":"10.1016/j.jcrysgro.2024.127887","DOIUrl":"10.1016/j.jcrysgro.2024.127887","url":null,"abstract":"<div><div>In the present paper, the liquid–solid two-phase turbulent flow in a Draft Tube Baffled crystallizer has been simulated using Computational Fluid Dynamics. In this respect, multiphase Eulerian model along with population balance equations were applied. To implement four-way coupling, aggregation and breakage were considered. The RNG k-ε and RSM turbulence models were employed to conduct numerical simulation of two phase turbulent flow. Results demonstrated that applying RNG k-ε and RSM turbulence models, a significant difference in axial velocity profiles along the x-axis is observed, while those along the z-axis exhibit less difference. Moreover, a significant difference in volume fraction between the two models was observed which mostly concerns the region within the draft tube and the distance between the baffle and crystallizer wall. Furthermore, changing the propeller speed from 165 to 495 rpm, the speed of 330 rpm showed to be optimal in terms of particles residence time. The results also showed that a rise in impeller speed is one of the major contributors to mass exchange enhancement between the liquid and the solid phases. Accordingly, as the impeller speed rises, the rate of mass exchange increases from 9.92 kg/h for 165 rpm to 29.07 kg/h for 495 rpm.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127887"},"PeriodicalIF":1.7,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419057","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}

{"title":"Oxygen precipitation behavior and its influence on phosphorus gettering in Czochralski silicon","authors":"Zhiyong Cun ,&nbsp;Qinglin Jin ,&nbsp;Shaoyuan Li","doi":"10.1016/j.jcrysgro.2024.127898","DOIUrl":"10.1016/j.jcrysgro.2024.127898","url":null,"abstract":"<div><div>This study investigates the effects of single-step and two-step annealing processes on the formation of oxygen precipitates and their impact on metal impurity gettering in gallium-doped monocrystalline silicon. The research focuses on the competitive relationship between internal gettering by oxygen precipitates and external gettering through phosphorus diffusion. Experimental results show that two-step annealing generates larger and more abundant oxygen precipitates, enhancing the internal gettering effect and reducing the recovery of minority carrier lifetime after phosphorus gettering. Despite this, phosphorus diffusion gettering remains effective in improving minority carrier lifetime, although the degree of improvement depends on the size and quantity of oxygen precipitates. These findings offer valuable insights for optimizing the fabrication process of silicon-based solar cells.</div></div>","PeriodicalId":353,"journal":{"name":"Journal of Crystal Growth","volume":"648 ","pages":"Article 127898"},"PeriodicalIF":1.7,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319379","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}