Bulletin of Materials Science最新文献

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Pressure dependence of mechanical properties of perovskite-type hydride NaBeH3 material: first principle calculations 透辉石型氢化物 NaBeH3 材料机械特性的压力依赖性:第一原理计算
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-26 DOI: 10.1007/s12034-024-03320-2
M Rahrah, N Lebga, A Latreche, S Daoud
{"title":"Pressure dependence of mechanical properties of perovskite-type hydride NaBeH3 material: first principle calculations","authors":"M Rahrah,&nbsp;N Lebga,&nbsp;A Latreche,&nbsp;S Daoud","doi":"10.1007/s12034-024-03320-2","DOIUrl":"10.1007/s12034-024-03320-2","url":null,"abstract":"<div><p>First principle calculations of the elastic constants of perovskite-type hydride NaBeH<sub>3</sub> material have been accomplished using the density functional theory (DFT) within the local density approximation (LDA) and the pseudopotential plane-wave method. The elastic constants were compared fairly well with those previously calculated. We have also calculated the dependence of the elastic constants on hydrostatic pressure from 0 up to 96.55 GPa. We have found that the elastic constants follow a quadratic law with respect to the pressure. In this study, the bulk modulus, shear modulus, Young’s modulus, Poisson’s ratio, acoustic wave speed and Debye temperature of cubic NaBeH<sub>3</sub> material are also determined as a function of pressure. Both the acoustic wave speed and the Debye temperature of NaBeH<sub>3</sub> material change monotonously and non-linearly with increasing the pressure from 0 up to 96.55 GPa.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414233","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
Nanostructured La2NiO4 synthesized using reverse micellar route and study of their magnetic and photoelectrochemical properties 利用反向胶束路线合成的纳米结构 La2NiO4 及其磁性和光电化学特性研究
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03318-w
Kirandeep Bhagat, Vaishali Sethi, Kandalam V Ramanujachary, Samuel E Lofland, Ashok K Ganguli
{"title":"Nanostructured La2NiO4 synthesized using reverse micellar route and study of their magnetic and photoelectrochemical properties","authors":"Kirandeep Bhagat,&nbsp;Vaishali Sethi,&nbsp;Kandalam V Ramanujachary,&nbsp;Samuel E Lofland,&nbsp;Ashok K Ganguli","doi":"10.1007/s12034-024-03318-w","DOIUrl":"10.1007/s12034-024-03318-w","url":null,"abstract":"<div><p>We synthesized La<sub>2</sub>NiO<sub>4</sub> nanostructures using the cationic surfactant-based reverse micellar route and reported on the effect of the size and shape of the La<sub>2</sub>NiO<sub>4</sub> nanostructures on their magnetic and photoelectrochemical properties. We satisfactorily refined the powder X-ray diffraction data in the tetragonal space group, <i>I4/mmm</i>. Magnetic susceptibility measurements were performed on all samples within the range of 5–300 K. The Curie–Weiss law determines the magnetic susceptibility of bulk La<sub>2</sub>NiO<sub>4</sub>, and a negative value for the Weiss temperature indicates antiferromagnetic exchange. The field-dependent magnetization curves of bulk La<sub>2</sub>NiO<sub>4</sub> suggest a canted antiferromagnetic behaviour. The Mott–Schottky plot demonstrates that La<sub>2</sub>NiO<sub>4</sub> is a <i>p</i>-type semiconducting material with holes as the primary charge carriers. Chronoamperometric measurements for these nanomaterials demonstrate excellent photostability of photocurrent.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413304","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
Reduced graphene oxide/polyaniline/vanadium pentoxide/stannic oxide quaternary nanocomposite, its high energy supercapacitance and green electrolyte 还原氧化石墨烯/聚苯胺/五氧化二钒/氧化锡四元纳米复合材料及其高能超级电容和绿色电解质
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03303-3
Aranganathan Viswanathan, Adka Nityananda Shetty
{"title":"Reduced graphene oxide/polyaniline/vanadium pentoxide/stannic oxide quaternary nanocomposite, its high energy supercapacitance and green electrolyte","authors":"Aranganathan Viswanathan,&nbsp;Adka Nityananda Shetty","doi":"10.1007/s12034-024-03303-3","DOIUrl":"10.1007/s12034-024-03303-3","url":null,"abstract":"<div><p>Challenge of achieving high energy density (<i>E</i>) comparable with Li-ion batteries in supercapacitors, with low potential window offering aqueous electrolytes (1.2 V) has been overcome by using the electrode material composed of rGO 3.70%:PANI 51.86%:V<sub>2</sub>O<sub>5</sub> 33.33%:SnO<sub>2</sub> 11.11% (GPVS). The GPVS exhibited different extents of energy storage in the presence of 1 M sulphuric acid (H<sub>2</sub>SO<sub>4</sub>) and acidified supernatant liquid (ASL), a green electrolyte. Here, the ASL is the by-product, which is obtained as supernatant liquid after the synthesis of GPVS composites in an <i>in situ</i> synthetic method, and acidified using conc. H<sub>2</sub>SO<sub>4</sub>. The energy storage obtained in the presence of ASL is 38% higher than the energy storage obtained in the presence of H<sub>2</sub>SO<sub>4</sub>. The GPVS exhibited a remarkable feature of amelioration of energy storage with increase in CV cycles in the presence of H<sub>2</sub>SO<sub>4</sub>. The GPVS exhibited an extraordinary cyclic stability up to 41,300 cycles. The energy storage parameters achieved in the presence of H<sub>2</sub>SO<sub>4</sub> after 33,800 cycles are, a specific capacitance (<i>C</i><sub>s</sub>) of 694.44 F g<sup>‒1</sup>, an <i>E</i> of 138.88 W h kg<sup>‒1</sup> (comparable with <i>E</i> of Li-ion batteries) and a power density (<i>P</i>) of 2.1020 kW kg<sup>‒1</sup> at 1 A g<sup>‒1</sup>. The energy storage parameters achieved in the presence of ASL are, a <i>C</i><sub>s</sub> of 212.31 F g<sup>‒1</sup>, an <i>E</i> of 42.46 W h kg<sup>‒1</sup> (comparable with <i>E</i> of Ni–Cd batteries) and a <i>P</i> of 3.1583 kW kg<sup>‒1</sup> at 2 A g<sup>‒1</sup>. It is satisfying that all these high energy characters are achieved with the real two electrodes–supercapacitor cell step up. The green supercapacitors are made by using the by-product, which is obtained as supernatant liquid after the synthesis of GPVS as its electrolytes.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413315","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
Improvement of low-velocity impact and tribo-mechanical properties of unsymmetrical hybrid composites through addition of nanoclay 通过添加纳米粘土改善非对称混合复合材料的低速冲击和三力学性能
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03294-1
Smaranika Nayak, Bibhu Prasad Sahoo, Ramesh Kumar Nayak, Isham Panigrahi
{"title":"Improvement of low-velocity impact and tribo-mechanical properties of unsymmetrical hybrid composites through addition of nanoclay","authors":"Smaranika Nayak,&nbsp;Bibhu Prasad Sahoo,&nbsp;Ramesh Kumar Nayak,&nbsp;Isham Panigrahi","doi":"10.1007/s12034-024-03294-1","DOIUrl":"10.1007/s12034-024-03294-1","url":null,"abstract":"<div><p>Improvement in mechanical properties of fibre-reinforced polymer composites through proper matrix modification has emerged as the significant trend in recent advanced technology. Dispersion of nanofillers in the matrix results in ultra-light weight, high strength, impact resistant and durable structures. In the current investigation, effect of the addition of varying percentages (0, 1, 3, 5 and 7 wt.%) of low-cost nanoclay to the unsymmetrical carbon/glass (C<sub>2</sub>G<sub>8</sub>) hybrid composites on mechanical, tribological and low-velocity impact (LVI) behaviour were investigated. Using traditional hand lay-up techniques, nanocomposite specimens were prepared. The results revealed that C<sub>2</sub>G<sub>8</sub> hybrid composite with 5 wt.% loading of nanoclay possessed maximum hardness (35 HV), flexural strength (494 MPa), impact strength (Izod (119.022 kJ m<sup>−2</sup>), Charpy (563.922 kJ m<sup>−2</sup>)) and minimum specific wear rate (19.6 × 10<sup>−3</sup> mm<sup>3</sup> Nm<sup>−1</sup>) in comparison with other hybrid combinations. LVI test also revealed enhanced energy absorption (112.46 J) for hybrid nanocomposite against plain C<sub>2</sub>G<sub>8</sub> hybrid composite. Furthermore, the damage depth and areas were observed by visual inspection and scanning electron microscope to account for best possible structure–property relationship. Developed hybrid nanocomposite may be considered as a suitable material for various automotive applications.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413313","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
A study on the structural, electronic and thermal properties of CdSiP2, CdSnP2 and their mixed crystals CdSi1–xSnxP2 关于 CdSiP2、CdSnP2 及其混合晶体 CdSi1-xSnxP2 的结构、电子和热特性的研究
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03330-0
N Taguida, S Benlamari, M Gasmi, F Chouit, H Meradji, S Ghemid, Z Chouahda, R Khenata, S A Tahir, R Ahmed
{"title":"A study on the structural, electronic and thermal properties of CdSiP2, CdSnP2 and their mixed crystals CdSi1–xSnxP2","authors":"N Taguida,&nbsp;S Benlamari,&nbsp;M Gasmi,&nbsp;F Chouit,&nbsp;H Meradji,&nbsp;S Ghemid,&nbsp;Z Chouahda,&nbsp;R Khenata,&nbsp;S A Tahir,&nbsp;R Ahmed","doi":"10.1007/s12034-024-03330-0","DOIUrl":"10.1007/s12034-024-03330-0","url":null,"abstract":"<div><p>In this investigation, we employ density functional theory with the generalized gradient approximation of Wu–Cohen and the modified Beck–Johnson approach. Our focus is on examining the structural, electronic and thermodynamic properties of ternary chalcopyrite CdXP<sub>2</sub> (X: Si and Sn) compounds. Our computed results of ternary structures for structural properties, for instance, tetragonal distortion, equilibrium lattice constants and bond lengths, show good agreement with the available results of the experimental and theoretical calculations. Our calculated positive results of cohesive energy and negative values of the formation energies of the title materials show their thermodynamic stability as well as highlight their possible experimental fabrication at these concentrations. From band structure calculations, it is found that the energy bandgap is of direct nature at Γ–Γ symmetry points for both ternary and quaternary alloys; however, the width of the bandgap is found to be decreased with increasing Sn concentration in the CdSi<sub>1–<i>x</i></sub>Sn<sub><i>x</i></sub>P<sub>2</sub> alloys. Moreover, thermodynamic properties using the quasi-harmonic Debye model are also computed. Our study provides a platform for further experimental and theoretical investigations to expose the potential of these materials for their applications.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413362","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
Construction and current–voltage properties of nanofilm CdS@Cd/Si heterojunctions by the direct current magnetron sputtering and solvothermal methods 用直流磁控溅射和溶热法构建纳米薄膜 CdS@Cd/Si 异质结及其电流-电压特性
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03337-7
Peng Fei Ji, Ya Juan Hao, Yong Li, Yue Li Song, Feng Qun Zhou
{"title":"Construction and current–voltage properties of nanofilm CdS@Cd/Si heterojunctions by the direct current magnetron sputtering and solvothermal methods","authors":"Peng Fei Ji,&nbsp;Ya Juan Hao,&nbsp;Yong Li,&nbsp;Yue Li Song,&nbsp;Feng Qun Zhou","doi":"10.1007/s12034-024-03337-7","DOIUrl":"10.1007/s12034-024-03337-7","url":null,"abstract":"<div><p>Nanofilm CdS@Cd/Si heterojunctions have been fabricated by a two-step method. The obvious rectification effect can be observed. However, the leakage current density is relatively large. According to the criterion for judging the conduction model, three conduction mechanisms can be observed, which are the thermally generated electrons model, the Ohmic model and the space-charge-limited-current model from low voltage to high voltage, respectively. The preparation process of nanofilm CdS@Cd/Si heterojunctions by this two-step method, which directly grows nanofilm CdS@Cd on the silicon substrate to construct heterojunctions, can reduce the introduction of excessive defects and facilitate the release of stress in the interface.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413367","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
Remarkable enhancement in adsorption capacity of methylene blue by hydrothermally processed MoSe2 nanosheets for environmental application 水热加工的 MoSe2 纳米片显著提高了亚甲基蓝的吸附能力,可用于环境领域
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03307-z
Piyush Siroha, Vartika Khandelwal, Davender Singh,  Ramovatar, Jitendra Gangwar
{"title":"Remarkable enhancement in adsorption capacity of methylene blue by hydrothermally processed MoSe2 nanosheets for environmental application","authors":"Piyush Siroha,&nbsp;Vartika Khandelwal,&nbsp;Davender Singh,&nbsp; Ramovatar,&nbsp;Jitendra Gangwar","doi":"10.1007/s12034-024-03307-z","DOIUrl":"10.1007/s12034-024-03307-z","url":null,"abstract":"<div><p>In the present study, we have developed molybdenum diselenide (MoSe<sub>2</sub>) nanosheets via an effective hydrothermal process by varying synthesis temperatures in a high-yield production. XRD results illustrate that all the products indexed to a hexagonal crystal phase of MoSe<sub>2</sub> (2H-MoSe<sub>2</sub>) with crystallite sizes around 7 nm. TEM and HRTEM images confirmed a high-quality crystalline feature of MoSe<sub>2</sub> nanosheets. Interestingly, the identified interplanar spacing of 0.61 nm corresponds to a well-organized atomic-scale arrangement with (<i>hkil</i>: 0002) plane of 2H-MoSe<sub>2</sub> crystal. Additionally, Moiré fringes of different periodicities are clearly visible in some crystalline regions suggesting that MoSe<sub>2</sub> nanosheets are well crystallized. The selected area electron diffraction patterns elucidate ring-like diffraction patterns indicating the polycrystalline nature of all the prepared MoSe<sub>2</sub> nanosheets. UV–Vis absorption spectra scrutinize the mechanism for photo-response phenomenon and the observed excitonic peaks evidently demonstrate that the synthesized MoSe<sub>2</sub> is in a semiconducting 2H phase with an optical bandgap ranging from 1.78 to 1.93 eV. Moreover, MoSe<sub>2</sub> nanosheets possess a prominent methylene blue (MB) dye adsorption capacity of 50–70% and 54–83% in lower and higher adsorption times, respectively. In a nutshell, this study reveals the potential environmental application in the adsorption of organic dye MB in wastewater of hydrothermally produced MoSe<sub>2</sub> nanosheets with structural and optical properties.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413366","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
Effect of annealing temperatures on phase evolution and magnetic properties of Co35Cr5Fe10Ni30Ti5Al15 high entropy alloys 退火温度对 Co35Cr5Fe10Ni30Ti5Al15 高熵合金相变和磁性能的影响
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03288-z
Priyanka Kumari, Rohit R Shahi
{"title":"Effect of annealing temperatures on phase evolution and magnetic properties of Co35Cr5Fe10Ni30Ti5Al15 high entropy alloys","authors":"Priyanka Kumari,&nbsp;Rohit R Shahi","doi":"10.1007/s12034-024-03288-z","DOIUrl":"10.1007/s12034-024-03288-z","url":null,"abstract":"<div><p>Design and development of novel high entropy alloys (HEAs) having balance magnetic properties with other functional properties are vital for industrial applications of these alloys. In this study, a novel Co<sub>35</sub>Cr<sub>5</sub>Fe<sub>10</sub>Ni<sub>30</sub>Ti<sub>5</sub>Al<sub>15</sub> HEA was synthesized through mechanical alloying and studied for phase evolution and its effects on magnetic properties with annealing at different temperatures. As-synthesized HEA has a major fcc phase with minor concentrations of bcc and R phases. The as-synthesized HEA is also annealed at different temperatures of 500, 700 and 900°C and found that the phase identity of formed phases maintained after annealing. However, for HEA annealed at 1000°C, slight amount of new σ-phase has formed along with initial phases. Values of <i>M</i><sub>s</sub> and <i>H</i><sub>c</sub> were found to be 75 emu g<sup>−1</sup> and 18 Oe for as-synthesized Co<sub>35</sub>Cr<sub>5</sub>Fe<sub>10</sub>Ni<sub>30</sub>Ti<sub>5</sub>Al<sub>15</sub> HEA. We found that after annealing at different temperatures, magnetic properties of Co<sub>35</sub>Cr<sub>5</sub>Fe<sub>10</sub>Ni<sub>30</sub>Ti<sub>5</sub>Al<sub>15</sub> HEA show significant improvement. Co<sub>35</sub>Cr<sub>5</sub>Fe<sub>10</sub>Ni<sub>30</sub>Ti<sub>5</sub>Al<sub>15</sub> HEA annealed at 900°C exhibited good soft magnetic characteristics with high <i>M</i><sub>s</sub> (99 emu g<sup>−1</sup>), low values of <i>H</i><sub>c</sub> (3.8 Oe) and <i>M</i><sub>r</sub> (0.45 emu g<sup>−1</sup>), as compared to other samples developed in the present study. Thus, designed and developed 900°C annealed Co<sub>35</sub>Cr<sub>5</sub>Fe<sub>10</sub>Ni<sub>30</sub>Ti<sub>5</sub>Al<sub>15</sub> HEA can be further used for magnetic switching applications due to the high value of <i>M</i><sub>s</sub> and low value of <i>M</i><sub>r</sub>.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413336","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
Synthesis, morphological and optical properties impact on transition metal ion (Co and Mn)-doped barium strontium titanate (BST) ferroelectric ceramics towards enhanced optoelectronic device applications 掺杂过渡金属离子(钴和锰)的钛酸锶钡(BST)铁电陶瓷的合成、形貌和光学特性对增强光电器件应用的影响
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03314-0
Mikanshi Chaudhary, Shilpi Jindal, Sheela Devi
{"title":"Synthesis, morphological and optical properties impact on transition metal ion (Co and Mn)-doped barium strontium titanate (BST) ferroelectric ceramics towards enhanced optoelectronic device applications","authors":"Mikanshi Chaudhary,&nbsp;Shilpi Jindal,&nbsp;Sheela Devi","doi":"10.1007/s12034-024-03314-0","DOIUrl":"10.1007/s12034-024-03314-0","url":null,"abstract":"<div><p>Barium strontium titanate (BST) is a perovskite material, which is used directly in various applications including thermistors, electromechanical actuators, sensors and ceramic capacitors. Here, we have investigated the impact of dopant (Mn and Co) on synthesized BST nanoparticles and its morphological, structural, vibrational and optical properties have been investigated through scanning electron microscopy (SEM), X-ray diffraction (XRD), photoluminescence (PL), FTIR and Raman spectroscopies. SEM image showed the nearly spherical grain for pure BST and doped (Mn and Co) BST samples. The estimated particles were strongly influenced by different dopants, in addition, Mn-doped BST showed maximum grain growth for pure and Co-doped BST samples. XRD patterns have been employed to investigate the microstructural parameters (phase, lattice, crystallite size, strain, dislocation density, etc.). The crystallite sizes have been estimated using the Scherrer formula, showing maximum crystallite size for Mn-doped BST ceramics. Recorded FTIR spectra showed the transmission peak, which is centred at wavenumber of 470 cm<sup>−1</sup> (pure BST), was shifted to 1250 cm<sup>−1</sup> with Mn-doped BST. Raman spectra exhibited the increased number of modes from pure BST to Mn-doped BST sample. PL showed the emissions bands, which were observed at 602–659 nm. Here, the peak shifted towards higher wavelength from pure BST to Mn-doped BST (red shifting from pure to Mn-doped BST). It revealed that the prepared samples can be employed as suitable photoluminar material.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413314","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
Electronic, electrical and magnetic behavioural changes of layer by layer deposited Cd0.4Zn0.6S and r-GO composites thin film (Cd0.4Zn0.6S:r-GO) semiconductors 逐层沉积 Cd0.4Zn0.6S 和 r-GO 复合薄膜(Cd0.4Zn0.6S:r-GO)半导体的电子、电学和磁学特性变化
IF 1.9 4区 材料科学
Bulletin of Materials Science Pub Date : 2024-09-23 DOI: 10.1007/s12034-024-03302-4
Sekhar Chandra Ray
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