Journal of Electroceramics最新文献_第8页

Structural, FTIR, optical and photoluminescence investigation of Zn1-xRExO nanoparticles for optical and power operation devices 用于光学和功率操作器件的Zn1-xRExO纳米颗粒的结构、FTIR、光学和光致发光研究

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-08-02 DOI: 10.1007/s10832-022-00291-w

A. Sedky, N. Afify, Atif Mossad Ali, H. Algarni

{"title":"Structural, FTIR, optical and photoluminescence investigation of Zn1-xRExO nanoparticles for optical and power operation devices","authors":"A. Sedky, N. Afify, Atif Mossad Ali, H. Algarni","doi":"10.1007/s10832-022-00291-w","DOIUrl":"10.1007/s10832-022-00291-w","url":null,"abstract":"<div>Structural, morphological, FTIR, optical and photoluminescence (PL) measurements of Zn1-xRExO nanoparticles with RE = Y, La and x (0.00 ≤ x ≤ 0.20) are reported. The wurtzite structure is confirmed for all samples and the lattice parameters, Zn–O bond length, porosity, crystallite size, lattice strain and residual stress are increased by increasing x to 0.20, but they are higher for La samples than Y. The grain sizes are 180, 330, and 460 nm for the pure, Y and La samples. The addition of RE to ZnO generally shifts FTIR absorption peaks, Debye temperature, and elastic modulus to higher values, but the shift is higher for La samples than Y. Although excitonic energy is constant for all samples, the energy gap Eg was increased by increasing x to 0.20, but it is higher for La samples than Y. Furthermore, the dielectric lattice constant, density of charge carriers, and electrical conductivity are increased by increasing x to 0.10, followed by a decrease to 0.20. The opposite behavior is true for dielectric loss and optical conductivity. The PL intensity shows four continuous visible peaks of near UV, blue, green, and red. Interestingly, the intensity of blue emission is greater than that of near UV, such that [(Iblue/IUV)] > 1]. Furthermore, for x > 0.10 samples, there is another lowest intensity IR emission peak centred at 824 nm (1.507 eV). These results are well explained and strongly recommend the RE doped samples for the applications of optoelectronic and high-power operating devices. To our knowledge, the present investigation probably has never been reported elsewhere.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"49 2","pages":"33 - 52"},"PeriodicalIF":1.7,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4069174","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

Tensors symmetry of crystalline nonlinear piezoelectric materials 晶体非线性压电材料的张量对称性

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-06-27 DOI: 10.1007/s10832-022-00289-4

A. F. Jaramillo Alvarado, A. Torres Jacome, F. J. de la Hidalga-Wade, P. Rosales-Quintero, Arturo Ponce

引用次数: 0

Effect of metal electrodes on the steady-state leakage current in PZT thin film capacitors 金属电极对PZT薄膜电容器稳态泄漏电流的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-06-25 DOI: 10.1007/s10832-022-00288-5

Yury V. Podgorny, Alexander N. Antonovich, Alexey A. Petrushin, Alexander S. Sigov, Konstantin A. Vorotilov

{"title":"Effect of metal electrodes on the steady-state leakage current in PZT thin film capacitors","authors":"Yury V. Podgorny, Alexander N. Antonovich, Alexey A. Petrushin, Alexander S. Sigov, Konstantin A. Vorotilov","doi":"10.1007/s10832-022-00288-5","DOIUrl":"10.1007/s10832-022-00288-5","url":null,"abstract":"<div>The ferroelectric Ir/PZT/Pt and Au/PZT/Pt capacitor structures are studied by the electron beam induced current (EBIC) technique and the steady-state current–voltage dependencies. EBIC data reveal the change in the local field at the PZT/metal interfaces caused by migration of oxygen vacancies ({V}_{o}^{**}) under an action of applied electric field. Ir/PZT and Pt/PZT interfaces block ({V}_{o}^{**}) movement causing their accumulation near the cathode interface. An electrons injection from the metal cathode to the PZT leads to formation of induced p–n junction. The steady-state leakage current in this case is well described by modified equation for the p-n diode, which considers an action of the counter electric field caused by electrons injection. In the case of transparent for oxygen vacancies Au/PZT cathode oxygen vacancies leave the PZT bulk and current–voltage dependence demonstrates a region of negative differential conductivity at high electric fields. The proposed p–n junction formalism can be used for engineering of PZT-based devices.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"49 1","pages":"15 - 21"},"PeriodicalIF":1.7,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4973394","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: 2

Effect of Co2+ substitutions on microstructure and dielectric properties of Bi1.5MgNb1.5O7 cubic pyrochlore Co2+取代对Bi1.5MgNb1.5O7立方焦绿盐微观结构和介电性能的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-06-07 DOI: 10.1007/s10832-022-00287-6

Kexin Liang, Libin Gao, Hongwei Chen, Zegao Wang, Qinyan Ye, Jihua Zhang

{"title":"Effect of Co2+ substitutions on microstructure and dielectric properties of Bi1.5MgNb1.5O7 cubic pyrochlore","authors":"Kexin Liang, Libin Gao, Hongwei Chen, Zegao Wang, Qinyan Ye, Jihua Zhang","doi":"10.1007/s10832-022-00287-6","DOIUrl":"10.1007/s10832-022-00287-6","url":null,"abstract":"<div>The attractive bismuth-based cubic pyrochlores possess large dielectric constant, high dielectric tunability, and extremely low dielectric loss. The Bi1.5Mg1-xCoxNb1.5O7 (Co-BMN, x = 0.0–0.5) cubic pyrochlore ceramics were prepared by solid-state reaction. All the Co-BMN ceramics maintained the cubic pyrochlore phase with a preferential (111) orientation. The forbidden (442) diffraction plane was found in Co-BMN pyrochlores. The crystallization of the Co-BMN ceramics was promoted by Co2+ doping modification. The Co-BMN at x = 0.3 achieved the maximum of cell volume, force constant of A-O stretching, and binding energy of Co2+. The dielectric constant of Co-BMN significantly increased due to the larger polarizability of Co2+. The increasing dielectric constant of Co-BMN pyrochlores (x ≤ 0.3) with increasing Co2+ doping was attributed to the displacive disorder of A-site and O’ ions. Co-BMN with moderate Co2+ doping (x ≤ 0.4) presented a low dielectric loss (< 0.0007). The temperature coefficient of dielectric constant of Co-BMN pyrochlores (x ≤ 0.4) increased from -382 ppm/oC to -84 ppm/oC after Co2+ doping. However, high concentration of Co2+ resulted in deterioration of dielectric properties of Co-BMN.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"49 1","pages":"6 - 14"},"PeriodicalIF":1.7,"publicationDate":"2022-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4627788","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

Transport properties of CuxCo4Sb11.7Te0.3 prepared by solid-state reaction 固相反应制备CuxCo4Sb11.7Te0.3的输运性质

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-06-06 DOI: 10.1007/s10832-022-00286-7

B. K. Qin, Y. H. Ji, Z. L. Bai, R. Huang, J. Z. Zhang

{"title":"Transport properties of CuxCo4Sb11.7Te0.3 prepared by solid-state reaction","authors":"B. K. Qin, Y. H. Ji, Z. L. Bai, R. Huang, J. Z. Zhang","doi":"10.1007/s10832-022-00286-7","DOIUrl":"10.1007/s10832-022-00286-7","url":null,"abstract":"<div>The Skutterudite compounds have been extensively studied worldwide over the past several years for their potential advanced thermoelectric applications in the intermediate temperature range. However, most methods for synthesis of CoSb3 materials require a long-duration heating process and complex equipments. In this study, a simple solid-state reaction method was used to prepare copper-tellurium co-doped CoSb3 ( CuxCo4Sb11.7Te0.3, x = 0-0.4) bulk thermoelectric materials. The obtained samples show enhanced thermoelectric properties compared to Cu-undoped sample. Especially in the case of Cu-doped CoSb3, the compound Cu0.4Co4Sb11.7Te0.3 exhibits a maximal Seebeck coefficient of 234.2 µVK− 1 at 617 K, the sample Cu0.1Co4Sb11.7Te0.3 reaches a power factor of 2012.35 mWm− 1 K− 2 at 715.7 K. Moreover, phonon scattering appears to be enhanced due to the significant reduction in grain size of the samples prepared by the solid-state reaction method, resulting in a minimum thermal conductivity of 1.67 Wm− 1 K− 1. A dimensionless figure of merit (ZT) of 0.68 was obtained for Cu0.3Co4Sb11.7Te0.3 at 716 K. Thus, the solid-state reaction method is a feasible strategy for the preparation of Skutterudite thermoelectric materials.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"49 1","pages":"1 - 5"},"PeriodicalIF":1.7,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10832-022-00286-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4261786","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

Excellent energy storage performance in NaNbO3-based relaxor antiferroeic ceramics under a low electric field 纳米bo3基弛豫反铁陶瓷在低电场条件下具有优异的储能性能

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-06-04 DOI: 10.1007/s10832-022-00283-w

Xuxin Cheng, Xiaoming Chen, Pengyuan Fan

{"title":"Excellent energy storage performance in NaNbO3-based relaxor antiferroeic ceramics under a low electric field","authors":"Xuxin Cheng, Xiaoming Chen, Pengyuan Fan","doi":"10.1007/s10832-022-00283-w","DOIUrl":"10.1007/s10832-022-00283-w","url":null,"abstract":"<div>NaNbO3-based antiferroelectric (AFE) ceramics have the prominent advantages of stable performance and low cost. However, its energy storage property is often remarkably limited by the hysteresis of the antiferroelectric to ferroelectric phase transformation. In this work, 0.88Na(Nb1−xTax)O3–0.12Bi0.2Sr0.7TiO3 (x = 0–0.075) antiferroelectric ceramics were synthesized using a conventional mixed oxide route. Ta5+ were completely dissolved into the lattice of 0.88NaNbO3–0.12Bi0.2Sr0.7TiO3 to form a pure perovskite structure. With increased Ta content, the AFE orthogonal P phase was replaced by AFE orthogonal R phase progressively. Meanwhile, the dielectric constant curve showed relaxor-like properties. As a result, slender P–E curves with reduced hysteresis loss and decreased residual polarization were achieved. Interestingly, a large recoverable energy storage density (Wrec ~ 2.16 J cm−3) and high energy storage efficiency (η ~ 80.7%) were obtained simultaneously under a low driving electric field of 15 kV mm−1 at doping ratio (x) of 0.075. In addition, the 0.88Na(Nb0.925Ta0.075)O3–0.12Bi0.2Sr0.7TiO3 sample exhibited excellent temperature stability, indicating an ideal candidate in future pulsed power capacitor.\u0000</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 4","pages":"198 - 206"},"PeriodicalIF":1.7,"publicationDate":"2022-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4168914","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: 5

Structure–property correlation in (1-y)Bi0.9Ca0.1FeO3-(y)PbTiO3 (0.0 < y < 1.0) solid solutions (1-y)Bi0.9Ca0.1FeO3-(y)PbTiO3 (0.0 < y < 1.0)固溶体的结构-性能相关性

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-05-03 DOI: 10.1007/s10832-022-00285-8

Patri Tirupathi, Satish Kumar Mandal, Amreesh Chandra

引用次数: 2

Oxygen vacancy-induced Al2TiO5 –based multifunctional ceramic composites: Electrochemical and optical properties 氧空位诱导的Al2TiO5基多功能陶瓷复合材料:电化学和光学性质

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-04-25 DOI: 10.1007/s10832-022-00284-9

Mahdi Hajihashemi, Morteza Shamanian, Fakhreddin Ashrafizadeh

引用次数: 1

Influence of calcination parameters on the microstructure, magnetic and hyperthermia properties of Zn-Co ferrite nanoparticles 煅烧参数对Zn-Co铁氧体纳米颗粒微观结构、磁性和热疗性能的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-04-05 DOI: 10.1007/s10832-022-00281-y

Behrouz Shahbahrami, Sayed Mahmood Rabiee, Reza Shidpour, Hamed Salimi-Kenari

{"title":"Influence of calcination parameters on the microstructure, magnetic and hyperthermia properties of Zn-Co ferrite nanoparticles","authors":"Behrouz Shahbahrami, Sayed Mahmood Rabiee, Reza Shidpour, Hamed Salimi-Kenari","doi":"10.1007/s10832-022-00281-y","DOIUrl":"10.1007/s10832-022-00281-y","url":null,"abstract":"<div>Magnetic nanoparticles (NPs) are of interest for use in magnetic hyperthermia. To achieve high efficient NPs as a heating agent, it is important to know the effect of processing parameters on the synthesis, microstructure and magnetic properties of NPs and their relationship with the systems’ specific loss power (SLP). In the present study, zinc cobalt ferrite NPs were precipitated using the co-precipitation method, and calcined at 550, 650 and 750 °C for 1 and 2 h. Then to evaluate their hyperthermia properties, ferrofluids of neat and PEGylated NPs (NPs@PEG) were studied. The analysis of X-ray diffraction (XRD), field emission electron microscopy (FESEM), vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), zeta potential and transmission electron microscopy (TEM) were used to characterize the NPs. It was found that the processing parameters had a significant effect on the microstructure, magnetic and hyperthermia properties of the synthesized NPs. With increasing the time and temperature of calcination, particle size and magnetic properties like anisotropic constant, magnetic moment and saturation magnetization increased too. Hyperthermia results showed that the synthesized NPs at 550 °C for 2 h produced more heat than the other samples. It was also found that the concentration of NPs had a great influence on the heat generated by the prepared ferrofluids. Ferrofluids containing 5 mg/ml of NPs synthesized at 550 °C for 2 h had the highest heating efficiency such that the SLP value of NPs and NPs@PEG was 139.3 and 83.6 W/g, respectively.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 4","pages":"157 - 168"},"PeriodicalIF":1.7,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4194450","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

Study on growth, optical and dielectric properties of ‘Nd’ DOPED NBT-BT (0.94(Na0.5Bi0.5tio3)-0.06batio3) relaxor ferroelectric single crystals Nd掺杂NBT-BT (0.94(Na0.5Bi0.5tio3)-0.06batio3)弛豫铁电单晶的生长、光学和介电性能研究

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2022-04-01 DOI: 10.1007/s10832-022-00282-x

Shanmuga Sundari Sankaran, Dhanasekaran. R, Binay Kumar, Durairajan. A, Valente M.A., Devaraj Stephen. L

{"title":"Study on growth, optical and dielectric properties of ‘Nd’ DOPED NBT-BT (0.94(Na0.5Bi0.5tio3)-0.06batio3) relaxor ferroelectric single crystals","authors":"Shanmuga Sundari Sankaran, Dhanasekaran. R, Binay Kumar, Durairajan. A, Valente M.A., Devaraj Stephen. L","doi":"10.1007/s10832-022-00282-x","DOIUrl":"10.1007/s10832-022-00282-x","url":null,"abstract":"<div>The present work describes the effect of Neodymium (Nd) in the NBT-BT (0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (NBT-BT (94/06)) + xNd (x = 0, 0.4, 0.6, 0.8, 1.0 wt%)) crystal grown by flux method. As the concentration of the Nd increases beyond 0.4 wt%, homogeneity of the solution is lost and the multinucleation was observed. Color of the crystal changed from yellow to muddy green and size of the crystals were reduced due to the incorporation of Nd in NBT-BT. Nd completely diffused into the NBT-BT lattice, hence no secondary phase formation was observed in XRD. But the peaks were shifted towards the higher angle side due to the shrinkage of NBT-BT lattice. Optical properties of the crystals are studied using UV–visible and photoluminescence spectra. Except 0.4 wt% of Nd, for all other concentration emission at 1064 nm was observed in the PL spectra. Effect of Nd in dielectric constant and the relaxor properties are discussed in detail.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"48 3","pages":"143 - 156"},"PeriodicalIF":1.7,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10832-022-00282-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4002208","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: 1