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Effect of annealing temperature on electrical properties of Al/ZrO2/p-Si MOS capacitor 退火温度对Al/ZrO2/p-Si MOS电容器电性能的影响
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2021-04-29 DOI: 10.1080/07315171.2021.1923119
A. Singh, S. Singh
{"title":"Effect of annealing temperature on electrical properties of Al/ZrO2/p-Si MOS capacitor","authors":"A. Singh, S. Singh","doi":"10.1080/07315171.2021.1923119","DOIUrl":"https://doi.org/10.1080/07315171.2021.1923119","url":null,"abstract":"Abstract The present study reveals that ZrO2 MOS capacitor has been fabricated by RF sputtering technique. The maximum refractive index has been found to be 2.29 at 400 °C. From capacitance-voltage graph, it has been observed that the memory window and accumulation capacitance has been found to be maximum at 400 °C. The maximum memory window and accumulation capacitance has been found to be 0.50 V and 7.00 ×10−11 F, respectively. The flat band voltage shifts toward positive side at all temperatures. From current-voltage curve, it has been observed that the leakage current is found to be low at 400 °C and it is order of 10 − 7A at +20 V.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"35 1","pages":"40 - 45"},"PeriodicalIF":0.4,"publicationDate":"2021-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75032287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optical properties of [Ta2O5]1-x[TiO2]x, (x = 0.08) thin films [Ta2O5]1-x[TiO2]x， (x = 0.08)薄膜的光学性质
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2021-04-29 DOI: 10.1080/07315171.2021.1923117
A. Bhandari, N. S. Panwar
{"title":"Optical properties of [Ta2O5]1-x[TiO2]x, (x = 0.08) thin films","authors":"A. Bhandari, N. S. Panwar","doi":"10.1080/07315171.2021.1923117","DOIUrl":"https://doi.org/10.1080/07315171.2021.1923117","url":null,"abstract":"Abstract Thin films of [Ta2O5]1-x-[TiO2]x, with x = 0.08, were deposited on quartz substrates (for optical study) and p- type mono- crystalline silicon (100) surfaces (for structural characterization and electrical measurements) by RF magnetron sputtering of [Ta2O5]0.92-[TiO2]0.08, ceramic target, using argon as sputtering gas and oxygen as reactive gas. Films were deposited at room temperature and further annealed at 400, 500, 600 and 700 0C, at ambient atmosphere. The observed XRD patterns show that the as- deposited and annealed films have crystalline structure. The spectral transmissions of the [Ta2O5]1-x-[TiO2]x (x = 0.08) films were measured in UV-visible range. The low optical transmittance in as-deposited films may be due to the presence of unreacted tantalum along with Ta2O5 in the films. From the observed transmission spectra, refractive index, optical band gap, absorption coefficient, extinction coefficient, and thickness of prepared [Ta2O5]0.92-[TiO2]0.08 films, have been calculated by Swanepoel’s envelope technique.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"90 1","pages":"20 - 30"},"PeriodicalIF":0.4,"publicationDate":"2021-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81607466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physical properties of Pb(Mg1/2W1/2)O3-Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3 ceramics doped with tungsten oxide for haptic display actuator 掺杂氧化钨触觉显示驱动器用Pb(mg1 / 2w /2)O3-Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3陶瓷的物理性能
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2021-04-28 DOI: 10.1080/07315171.2021.1923121
Juhyun Yoo, Jongmyung Im, In-Seok Yu
{"title":"Physical properties of Pb(Mg1/2W1/2)O3-Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3 ceramics doped with tungsten oxide for haptic display actuator","authors":"Juhyun Yoo, Jongmyung Im, In-Seok Yu","doi":"10.1080/07315171.2021.1923121","DOIUrl":"https://doi.org/10.1080/07315171.2021.1923121","url":null,"abstract":"Abstract In this study, for developing the low temperature sintering ceramics for speaker using piezoelectric actuator, Pb(Mg1/2W1/2)O3-Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3 [PMW-PNN-PZT] ceramics doped with PbO, CuO, and WO3 as sintering aids were manufactured, and their microstructural, dielectric, and piezoelectric properties were investigated. At 0.3 wt% tungsten oxide (=WO3) added specimen sintered at 920 °C, the maximum values of piezoelectric properties were shown, respectively: the dielectric constant (εr) of 2275, piezoelectric constant (d33) of 502 pC/N, electromechanical coupling factor (kp) of 0.644, and mechanical quality factor (Qm) of 57 were suitable for the device application such as haptic display actuator using low temperature sintering multilayer ceramics.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"24 1","pages":"56 - 63"},"PeriodicalIF":0.4,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89800951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Rietveld analysis and negative dielectric behavior of perovskite-like La1–xEuxMnO3 system 类钙钛矿La1-xEuxMnO3体系的Rietveld分析及负介电行为
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI: 10.1080/07315171.2020.1810983
Shilpa Kumari, R. Rai, Pawan Kumar, P. Kumari, A. Dronov
{"title":"Rietveld analysis and negative dielectric behavior of perovskite-like La1–xEuxMnO3 system","authors":"Shilpa Kumari, R. Rai, Pawan Kumar, P. Kumari, A. Dronov","doi":"10.1080/07315171.2020.1810983","DOIUrl":"https://doi.org/10.1080/07315171.2020.1810983","url":null,"abstract":"Abstract In this article, we report the results of the Rietveld and impedance analysis of Eu doped La1–xEuxMnO3 (LEMO; x = 0.10, 0.30, and 0.50) perovskite manganites synthesized by solid-state reaction method. Structural studies through Rietveld analysis confirm that a mixed-phase nature of all LEM samples having a hexagonal unit cell structure with a less detectable impurity (Eu2O3) ceramics. The patterns are zanalyzed in detail with structural distortion and strain in LEM manganites ceramics. Dielectric constant and modulus are found to increase with increasing Eu concentration. The samples LEM-0.10 shows the negative capacitance at low frequency and temperature, respectively.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"22 1","pages":"61 - 70"},"PeriodicalIF":0.4,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84149422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Coexistence of phases and interphase boundaries in BaTiO3 BaTiO3中相与相间边界的共存
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI: 10.1080/07315171.2020.1810982
T. Liebsch, V. Sobolev
{"title":"Coexistence of phases and interphase boundaries in BaTiO3","authors":"T. Liebsch, V. Sobolev","doi":"10.1080/07315171.2020.1810982","DOIUrl":"https://doi.org/10.1080/07315171.2020.1810982","url":null,"abstract":"Abstract A theoretical analysis of the internal structure of interphase boundaries separating domains of coexisting phases is presented for the perovskite ferroelectric BaTiO3. The temperature dependence of interphase boundary widths and surface energies are calculated and compared with the corresponding parameters for different types of domain walls existing within the ferroelectric phases of BaTiO3.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"276 1","pages":"51 - 60"},"PeriodicalIF":0.4,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77838883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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 insulator layer thickness on electrical properties of Al/BiFeO3/ZrO2/p-Si for nonvolatile memory applications 绝缘层厚度对Al/BiFeO3/ZrO2/p-Si非易失性存储器电性能的影响
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI: 10.1080/07315171.2020.1810984
Ashutosh Kumar Singh, Chandravilash Rai, S. Singh
{"title":"Effect of insulator layer thickness on electrical properties of Al/BiFeO3/ZrO2/p-Si for nonvolatile memory applications","authors":"Ashutosh Kumar Singh, Chandravilash Rai, S. Singh","doi":"10.1080/07315171.2020.1810984","DOIUrl":"https://doi.org/10.1080/07315171.2020.1810984","url":null,"abstract":"Abstract BiFeO3 (BFO) and ZrO2 have been deposited on p-type (100) silicon substrate by sol-gel process and rf sputtering method, respectively. Metal-ferroelectric-insulator-semiconductor capacitor has been fabricated with 100 nm BFO and 10 nm ZrO2 shows maximum memory window of 1.54 V as compared to other fabricated capacitors with 5 and 15 nm insulating layer thickness. Improvement in current density has been also observed in different thickness of buffer layer of MFIS capacitors. The improved current density of order of 10-7 A/cm2 has been observed in MF(100nm)I(10nm)S structure. It has been also observed in MF(100nm)I(10nm)S structure that no charge value degrades up to 1011 iteration cycles.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"268 1","pages":"71 - 75"},"PeriodicalIF":0.4,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77973229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microstructure and dielectric properties of 0-3 connectivity lead-free BCTS-Portland cement composites 0-3连通度无铅bcts -波特兰水泥复合材料的微观结构和介电性能
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI: 10.1080/07315171.2020.1810986
R. Potong, R. Rianyoi, A. Chaipanich
{"title":"Microstructure and dielectric properties of 0-3 connectivity lead-free BCTS-Portland cement composites","authors":"R. Potong, R. Rianyoi, A. Chaipanich","doi":"10.1080/07315171.2020.1810986","DOIUrl":"https://doi.org/10.1080/07315171.2020.1810986","url":null,"abstract":"Abstract The 0-3 connectivity lead-free barium calcium stannate titanate (BCTS)-Portland cement (PC) composites were produced by pressing and curing techniques. The effect of BCTS ceramic content on microstructure and dielectric properties of composites were studied. Scanning electron microscope images at the interfacial zone of composites showed denser microstructure between Portland cement matrix and BCTS ceramic. The dielectric constant and dielectric loss of BCTS-Portland cement composites were also found to depend on the frequency in the range tested. The dielectric results indicate that the BCTS ceramic can improve the dielectric constant (lower dielectric loss) in composites. The dielectric constant followed the cube model.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"54 1","pages":"90 - 95"},"PeriodicalIF":0.4,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75011884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanism analyses of differential and static dielectric constants in ferroelectrics 铁电体中微分和静态介电常数的机理分析
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI: 10.1080/07315171.2020.1832393
Y. Gan, W. Cao
{"title":"Mechanism analyses of differential and static dielectric constants in ferroelectrics","authors":"Y. Gan, W. Cao","doi":"10.1080/07315171.2020.1832393","DOIUrl":"https://doi.org/10.1080/07315171.2020.1832393","url":null,"abstract":"Abstract The dielectric constant measured by the LCR-meter is a differential-type, and is not equivalent to capacitivity. Capacitivity of ferroelectrics is the dielectric constant corresponding to electric hysteresis loop. Two kinds of dielectric constants are investigated based on the P-E loop mechanisms: turning effect of dipoles toward electric field direction, electric field-induced polarization effect, and dipole coupling effect. Numerical simulation of the theoretic equations exhibit adouble-peak of the differential dielectric constant, in which the distance between the two peaks depends on the temperature and the electric field. A much narrow static dielectric constant peak and negative peak appear corresponding to the loop. Mechanisms are analyzed schematically in detail. HIGHLIGHTS Definitions of differential- and static-dielectric constant are introduced and compared. Theoretic equations for the two dielectric constants are derived from the three effects. Variations of the two dielectric constants with E and T are demonstrated schematically. Mechanisms of the variations are explained in detail.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"22 1","pages":"96 - 104"},"PeriodicalIF":0.4,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81183310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
To study the effect of low temperature crystal growth on the structural and ferroelectric properties of lead-free BCT-BZT ceramic 研究低温晶体生长对无铅BCT-BZT陶瓷结构和铁电性能的影响
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-03-26 DOI: 10.1080/07315171.2020.1810985
S. Thakur, Mamta Shandilya, M. Graça, M. Valente
{"title":"To study the effect of low temperature crystal growth on the structural and ferroelectric properties of lead-free BCT-BZT ceramic","authors":"S. Thakur, Mamta Shandilya, M. Graça, M. Valente","doi":"10.1080/07315171.2020.1810985","DOIUrl":"https://doi.org/10.1080/07315171.2020.1810985","url":null,"abstract":"Abstract Barium Zirconate Titanate-Barium Calcium Titanate (BCT-BZT) is one of the lead-free systems, which exhibits remarkable ferroelectric properties akin to lead-based perovskite materials. In this study, we have synthesized x(Ba0.85Ca0.15)TiO3-(1−x)Ba(Zr0.15Ti0.85)O3 (where x = 0.4, 0.5, 0.6) monophonic powders by hydrothermal method at 150 °C. X-ray diffraction reveals the pure tetragonal phase. Scanning electron microscopy (SEM) studies make known that the crystal growth is uniform due to low temperature, and that the ceramics are highly dense and polycrystalline. The single semicircle indicates bulk behavior. The bulk resistance decreases with the increase in temperature showing a typical semiconducting property, negative temperature coefficient of resistance (NTCR) behavior.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"21 1","pages":"76 - 89"},"PeriodicalIF":0.4,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81136843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Rational analysis of processes of (first-order) ferroelectric phase transition and those of ferroic hysteresis 合理分析了一阶铁电相变和铁电滞后过程
IF 0.4 4区 物理与天体物理
Ferroelectrics Letters Section Pub Date : 2020-01-24 DOI: 10.1080/07315171.2020.1799628
S. Ai, Shao-yin Zhang, Jin-Song Wang, Yuan-Zhen Cai
{"title":"Rational analysis of processes of (first-order) ferroelectric phase transition and those of ferroic hysteresis","authors":"S. Ai, Shao-yin Zhang, Jin-Song Wang, Yuan-Zhen Cai","doi":"10.1080/07315171.2020.1799628","DOIUrl":"https://doi.org/10.1080/07315171.2020.1799628","url":null,"abstract":"Abstract From the view-point of non-equilibrium (or irreversible) statistical thermodynamics, the similarities and differences between the processes of (first-order) ferroelectric phase transition and those of ferroic hysteresis were compared. They are all irreversible. The former are local and rate-dependent, at the meanwhile, the latter are non-local and rate-independent.","PeriodicalId":50451,"journal":{"name":"Ferroelectrics Letters Section","volume":"16 1","pages":"16 - 19"},"PeriodicalIF":0.4,"publicationDate":"2020-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81593383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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