Journal of Electroceramics最新文献_第9页

Precursor synthesis and properties of iron and lithium co-doped cadmium oxide 铁锂共掺杂氧化镉前驱体合成及性能研究

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-03-31 DOI: 10.1007/s10832-022-00278-7

Vladimir Krasil’nikov, Vladlen Zhukov, Evgueni Chulkov, Alexander Tyutyunnik, Tatyana Dyachkova, Inna Baklanova, Olga Gyrdasova, Nikolai Zhuravlev, Vasiliy Chistyakov, Tian Gao, Michael Eisterer, Vyacheslav Marchenkov

{"title":"Precursor synthesis and properties of iron and lithium co-doped cadmium oxide","authors":"Vladimir Krasil’nikov, Vladlen Zhukov, Evgueni Chulkov, Alexander Tyutyunnik, Tatyana Dyachkova, Inna Baklanova, Olga Gyrdasova, Nikolai Zhuravlev, Vasiliy Chistyakov, Tian Gao, Michael Eisterer, Vyacheslav Marchenkov","doi":"10.1007/s10832-022-00278-7","DOIUrl":"10.1007/s10832-022-00278-7","url":null,"abstract":"<div>Lithium and iron co-doped cadmium oxide Cd0.9(Li1-xFex)0.1O (x = 0.1, 0.3, 0.5, 0.7) with NaCl structure has been synthesized using formate of the composition Cd0.9(Li1-xFex)0.1(HCOO)2·2H2O as a precursor. The NMR spectroscopy results demonstrate that the structure of lithium-doped cadmium oxide appears to have impurity centers only of one type. All the synthesized samples show a metal-like conductivity as indicated by the growth of their electrical resistance with temperature increasing in the interval 78–330 K. The study of the magnetic properties of the Cd0.9(Li1-xFex)0.1O samples at 5 and 300 K revealed that they are ferromagnets, whose saturation magnetization increases with the iron concentration both at low and room temperature reaching the maximal values in the samples with a Li and Fe concentration of 3 and 7 at.%, respectively. An enhancement of the iron concentration in Cd0.9(Li1-xFex)0.1O from x = 0.5 to x = 0.7 leads to an abrupt growth of the magnetization from 0.30 to 1.94 emu/g at 5 K and from 0.16 to 1.03 emu/g at 300 K. Iron doping with a simultaneous reduction of the lithium concentration also results in an increase of the band gap. The properties of these compounds are explained on the basis of first-principles calculations of their band structure.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 3","pages":"127 - 142"},"PeriodicalIF":1.7,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10832-022-00278-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4061734","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

Preparation and dielectric properties of La doped NBCCTO ceramics La掺杂NBCCTO陶瓷的制备及其介电性能

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-03-25 DOI: 10.1007/s10832-022-00280-z

Qi Hu, Jiayuan Tang, Yuancheng Teng, Xiaofeng Zhao, Temirlan Arslanov, Rajeev Ahuja

{"title":"Preparation and dielectric properties of La doped NBCCTO ceramics","authors":"Qi Hu, Jiayuan Tang, Yuancheng Teng, Xiaofeng Zhao, Temirlan Arslanov, Rajeev Ahuja","doi":"10.1007/s10832-022-00280-z","DOIUrl":"10.1007/s10832-022-00280-z","url":null,"abstract":"<div>CaCu3Ti4O12 ceramics have great dielectric constant, excellent temperature stability and good frequency stability. However, due to high dielectric loss, its practical application in engineering is hindered. In this paper, Na0.25Bi0.25LaxCa0.5-3x/2Cu3Ti4O12 (NBLCCTO) ceramics were prepared by solid phase synthesis. The effects of sintering temperature and La content on dielectric properties of NBLCCTO ceramics were studied. The results show when the sintering temperature is 1030℃ and La content is 0.05, NBLCCTO ceramics show better dielectric properties. Its dielectric constant has εr = 22,231 at 1 kHz and its dielectric loss is 0.0546 at 10 kHz. Appropriate doping of La can lead to grain refinement and enlarge specific surface area of grain boundary, thus increasing resistivity and reducing dielectric loss. Therefore, NBLCCTO ceramics have lower dielectric loss than Na0.25Bi0.25Ca0.5Cu3Ti4O12 (NBCCTO).</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 3","pages":"117 - 126"},"PeriodicalIF":1.7,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4976379","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: 1

High energy storage, structure evolution and dielectric properties of complex perovskite solid solution (1-x) NaNbO3-xBi (Zn2/3Nb1/3) O3 复合钙钛矿固溶体(1-x) NaNbO3-xBi (Zn2/3Nb1/3) O3的高能量储存、结构演化和介电性能

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-02-21 DOI: 10.1007/s10832-022-00279-6

Guoliang Xue, Xuefan Zhou, Dou Zhang

{"title":"High energy storage, structure evolution and dielectric properties of complex perovskite solid solution (1-x) NaNbO3-xBi (Zn2/3Nb1/3) O3","authors":"Guoliang Xue, Xuefan Zhou, Dou Zhang","doi":"10.1007/s10832-022-00279-6","DOIUrl":"10.1007/s10832-022-00279-6","url":null,"abstract":"<div>NaNbO3-based lead-free ceramics show great potential in energy storage and piezoelectric applications due to the antiferroelectric and ferroelectric features. However, pure NaNbO3 usually shows lossy hysteresis loops because of the metastable antiferroelectric phase at room temperature. In this work, Bi(Zn2/3Nb1/3)O3 was introduced into NaNbO3 to modulate the phase structure, dielectric, and energy storage properties. The addition of Bi(Zn2/3Nb1/3)O3 changed the phase structure from orthorhombic to pseudo-cubic, decreased the grain size from ~ 20 μm to ~ 1 μm, shifted the temperature of dielectric peak from 360℃ to room temperature, and led to much-reduced polarization hysteresis and improved breakdown strength. With the addition of 9 mol% Bi(Zn2/3Nb1/3)O3, the maximum recoverable energy density of 3.3 J/cm3 was achieved under 33.5 kV/mm. These results provide a feasible route to design and fabricate new NaNbO3-based energy storage ceramics.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 3","pages":"111 - 116"},"PeriodicalIF":1.7,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10832-022-00279-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4822340","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: 5

The vibro-acoustic analysis of a matching layer attached on a 1–3 piezoelectric composite transducer 1-3压电复合换能器上匹配层的振动声分析

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-02-15 DOI: 10.1007/s10832-022-00277-8

Yi Liu, Yingqi Sun, Zhihong Huang, Yang Wang, Deping Zeng, Zengtao Yang

{"title":"The vibro-acoustic analysis of a matching layer attached on a 1–3 piezoelectric composite transducer","authors":"Yi Liu, Yingqi Sun, Zhihong Huang, Yang Wang, Deping Zeng, Zengtao Yang","doi":"10.1007/s10832-022-00277-8","DOIUrl":"10.1007/s10832-022-00277-8","url":null,"abstract":"<div>A well-designed matching layer attached to a transducer is an effective method to obtain broad bandwidth. In practical applications, the optimal material parameters and geometric parameters for the matching layer are required to be calculated precisely. In this paper, we propose a fluid–structure interaction model for vibro-acoustic analysis of the transducer. An analytical solution to determine the electrical impedance of a transducer with a matching layer immersed in water is derived. The influence of matching layer on the performance of the transducer is demonstrated clearly. To verify the proposed model, a 1–3 piezoelectric composite transducer with a matching layer according to the our proposed model is fabricated. Consequently, the theoretical model we proposed can accurately predict the electrical impedance of the transducer with a matching layer. According to the model, the optimal thickness and acoustic impedance for the matching layer to expand the conductance bandwidth of the transducer can be figured out accurately. In addition, our proposed model also provides a reference for designing a transducer with a matching layer.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 2","pages":"102 - 109"},"PeriodicalIF":1.7,"publicationDate":"2022-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10832-022-00277-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4609281","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

Structural, morphological and electrical properties of new type Dy doped Ca6-xNa2Y2(SiO4)6(OH)2 hydroxyapatite compound synthesized by co – precipitation method 共沉淀法合成新型Dy掺杂Ca6-xNa2Y2(SiO4)6(OH)2羟基磷灰石化合物的结构、形态和电性能

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-01-03 DOI: 10.1007/s10832-021-00274-3

Ananya Rout, Sadhana Agrawal

{"title":"Structural, morphological and electrical properties of new type Dy doped Ca6-xNa2Y2(SiO4)6(OH)2 hydroxyapatite compound synthesized by co – precipitation method","authors":"Ananya Rout, Sadhana Agrawal","doi":"10.1007/s10832-021-00274-3","DOIUrl":"10.1007/s10832-021-00274-3","url":null,"abstract":"<div>In this study Dy3+ doped Ca6-xNa2Y2(SiO4)6(OH)2 (x = 0 – 0.05 mol%) hydroxyapatite compound was synthesized by co – precipitation method. The structural analysis reveals that the prepared compound has single phase hexagonal structure with space group P63/m. Scanning electron microscopy images show that the grains have irregular morphology and the grain size lies between 120—800 nm. The dielectric and electrical conduction studies of hydroxyapatite compound was done over a wide range of frequency (102 – 105 Hz) and temperature (500C – 5000C) respectively. Dielectric measurement shows that orientational and space charge polarizations are the dominant polarization mechanisms. Complex impedance and electric modulus spectroscopy analysis shows that ionic conduction is the presiding conduction mechanism. Nyquist plots depict the contribution of grains rather than grain boundaries in the conduction phenomena. A.C conductivity analysis shows that hydroxyl (OH)− and oxygen (O−2) ions were the main charge carriers responsible for conduction phenomena in hydroxyapatite compounds.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 2","pages":"74 - 94"},"PeriodicalIF":1.7,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4120638","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: 4

Influence of preparation method on phase formation, structural and magnetic properties of BiFeO3 制备方法对BiFeO3相形成、结构和磁性能的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-01-03 DOI: 10.1007/s10832-021-00276-1

Shehab E. Ali

{"title":"Influence of preparation method on phase formation, structural and magnetic properties of BiFeO3","authors":"Shehab E. Ali","doi":"10.1007/s10832-021-00276-1","DOIUrl":"10.1007/s10832-021-00276-1","url":null,"abstract":"<div>Nanocrystalline BiFeO3 was synthesized utilizing two distinct techniques: auto-combustion and ceramic. A unique auto-combustion process employing glycine as a fuel has been used to synthesize single-phase BiFeO3 nanoparticles. Well mixed metal nitrates combust, producing BiFeO3 nanoparticles, which crystallize in a rhombohedral perovskite structure. The average particle size of 16 nm was estimated using Rietveld refinement of the X-ray diffraction data. The X-ray diffraction data for the solid-state prepared sample shows the formation of BiFeO3 with the same rhombohedral perovskite structure with an average particle size of 101 nm with additional secondary phases corresponding to Bi2Fe4O9/Bi2O3 and Bi25FeO39. By increasing the sintering time Bi2Fe4O9/Bi2O3 phase disappeared after 3 h of heating and reappeared again after 5 h of sintering. The changing of sintering time was not able to reduce the Bi25FeO39 formation. The TEM estimated average particle size confirms the XRD analysis. M(H) hysteresis loop shows a G-type magnetic structure. Due to the small particle size, the periodicity of canted spins was broken, and the magnetization of the auto-combustion prepared sample is approximately eight times greater than the ceramic prepared one. The importance of pure phase BiFeO3 came from its potential applications in sensors, data storage, spintronics devices, and reports of greatly enhanced ferroelectricity in epitaxially strained thin films.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 2","pages":"95 - 101"},"PeriodicalIF":1.7,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4122162","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: 10

Fabrication and properties of 1–3 connectivity epoxy resin modified cement based piezoelectric composite 1-3连通性环氧树脂改性水泥基压电复合材料的制备及性能研究

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2021-11-30 DOI: 10.1007/s10832-021-00275-2

Yan Hu, Haoran Li, Peng Liu, Dongyu Xu

{"title":"Fabrication and properties of 1–3 connectivity epoxy resin modified cement based piezoelectric composite","authors":"Yan Hu, Haoran Li, Peng Liu, Dongyu Xu","doi":"10.1007/s10832-021-00275-2","DOIUrl":"10.1007/s10832-021-00275-2","url":null,"abstract":"<div>The 1–3 connectivity epoxy resin modified cement based piezoelectric composites were developed to meet the requirement of concrete structural heath monitoring. The piezoelectric ceramic volume fraction on piezoelectric, dielectric and electromechanical coupling properties of the composites were discussed. The results showed that the relative permittivity of the piezoelectric composites increases linearly with increasing the PZT piezoelectric ceramic volume fraction, but the dielectric loss of the piezoelectric composites is a little bit larger than that of the PZT ceramic. The piezoelectric strain constant d33 of the piezoelectric composites is mainly contributed by PZT ceramic and is in proportion to PZT volume fraction, however, the piezoelectric voltage constant ({g}_{33}) show the opposite variation. When PZT volume fraction decreases to 27.7%, ({g}_{33}) value of the piezoelectric composites reaches to 75.0 (mV)·m·N−1. When PZT ceramic volume fraction is 62.33%, the thickness electromechanical coupling coefficient kt of the piezoelectric composites is the largest of 66.73%. The acoustic impedance Z of the piezoelectric composite is close to that of the concrete when PZT ceramic volume fraction is less than 44.44%.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 2","pages":"67 - 73"},"PeriodicalIF":1.7,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5164406","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: 1

Magnetic and photocatalytic properties of CoFe2O4/Ni nanocomposites CoFe2O4/Ni纳米复合材料的磁性和光催化性能

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2021-11-18 DOI: 10.1007/s10832-021-00271-6

V. Mahdikhah, A. Ataie, H. Akbari Moayyer, Mohammad Jafar Molaei, A. Babaei

{"title":"Magnetic and photocatalytic properties of CoFe2O4/Ni nanocomposites","authors":"V. Mahdikhah, A. Ataie, H. Akbari Moayyer, Mohammad Jafar Molaei, A. Babaei","doi":"10.1007/s10832-021-00271-6","DOIUrl":"10.1007/s10832-021-00271-6","url":null,"abstract":"<div>In this research, hard/soft CoFe2O4/Ni magnetic nanocomposite samples with different concentrations of Ni were successfully produced by a two-step mechanical alloying route. Single-phase CoFe2O4 (CFO), having the average particle size of 35 nm, saturation magnetization of 71 emu/g, and bandgap energy of 2.6 eV was synthesized via the mechanical alloying method. A mixture of as-synthesized CFO and 10, 30 and, 50 wt. % Ni powder has been severely milled to prepare magnetic nanocomposite samples. The effects of different Ni content on the characteristics of the nanocomposite samples have been investigated. FESEM images showed that the ductile nickel powder particles get flattened after 1 h milling, whereas the brittle CFO particles get fragmented by increasing milling time to 10 h. The single-phase-like hysteresis loop, and the switching field distribution curves alongside the simultaneous enhancements of maximum energy product and remanence reflect the presence of exchange spring phenomenon in the nanocomposite samples. Also, the diffuse reflectance spectroscopy (DRS) analysis evidence the reduction of bandgap energy for 10 wt.% Ni containing nanocomposite sample from 2.44 to 2.15 eV on increasing the milling time from 1 to 10 h. Under the optimum photocatalyst operating conditions, the CFO/10 wt% Ni sample exhibited the highest photocatalytic activity of 93.6% for methylene blue (MB) degradation in comparison with the cobalt ferrite sample. Eventually, the detailed kinetic and mechanism to describe the improvement of the photocatalytic performance were suggested.<h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 1","pages":"51 - 66"},"PeriodicalIF":1.7,"publicationDate":"2021-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10832-021-00271-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5028247","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: 7

Band gap tuning of oxygen vacancy-induced Al2O3-TiO2 ceramics processed by spark plasma sintering 火花等离子烧结氧空位诱导Al2O3-TiO2陶瓷的带隙调谐

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2021-11-11 DOI: 10.1007/s10832-021-00273-4

Mahdi Hajihashemi, Morteza Shamanian, Fakhreddin Ashrafizadeh

{"title":"Band gap tuning of oxygen vacancy-induced Al2O3-TiO2 ceramics processed by spark plasma sintering","authors":"Mahdi Hajihashemi, Morteza Shamanian, Fakhreddin Ashrafizadeh","doi":"10.1007/s10832-021-00273-4","DOIUrl":"10.1007/s10832-021-00273-4","url":null,"abstract":"<div>Optical and photocatalytic applications of Al2O3 and TiO2 ceramics are limited, especially under visible light, due to their wide bandgap; so, this parameter plays an important and even decisive role in these applications. In the present study, Al2O3-TiO2 ball milled powders were sintered by spark plasma sintering (SPS) at 1573 K. The products were characterized using XRD, SEM, UV–Vis and electrochemical methods. The results indicated effective improvement in the light absorbing capability of the composites (up to 95%) under visible light and the decrease of the band gap down to 2.2 eV owing to the increase of oxygen vacancies, which was, in turn, due to the reduced atmosphere of the sintering process. In addition, formation of a new phase (Al2TiO5) during sintering greatly affected the absorption of Al2O3-TiO2 composites in the visible light region due to the increase in the fraction of the charge carrier separation centers. Photo-luminescence spectroscopy also showed that tialite formation could be effective in improving the charge separation efficiency.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 1","pages":"35 - 50"},"PeriodicalIF":1.7,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4473483","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: 1

BaTiO3-based nanogenerators: fundamentals and current status 基于batio3的纳米发电机:基本原理和现状

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2021-11-10 DOI: 10.1007/s10832-021-00266-3

Satiye Korkmaz, I. Afşin Kariper

引用次数: 7