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Preparation and characterization of NiFe2O4 thin films for supercapacitor applications 超级电容器用NiFe2O4薄膜的制备与表征
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-09-20 DOI: 10.1080/01411594.2022.2122825
V. A. Jundale, D. A. Patil, A. A. Yadav
{"title":"Preparation and characterization of NiFe2O4 thin films for supercapacitor applications","authors":"V. A. Jundale, D. A. Patil, A. A. Yadav","doi":"10.1080/01411594.2022.2122825","DOIUrl":"https://doi.org/10.1080/01411594.2022.2122825","url":null,"abstract":"ABSTRACT Mesoporous NiFe2O4 thin films have been prepared by chemical spray pyrolysis. The films are characterized by XRD, FESEM, EDAX, UV-Visible spectroscopy, DC electrical resistivity and electrochemical measurements. XRD result shows the cubic crystal structure with Fd-3 m (227) space group. Crystallite size is found in the range of 14–21 nm. FESEM showed crack free, well defined, uniform, mesoporous spherical grain-like surface morphology. EDAX study confirmed nearly stoichiometric deposition. The optical absorption studies confirmed direct allowed type transition with bandgap in the range of 2.09–2.29 eV. The films showed room temperature electrical resistivity of 2.34 × 104 Ωcm. The NiFe2O4 thin film spray deposited at 450°C exhibited a specific capacitance of 591 Fg−1 at a scan rate of 5 mV·s−1 from CV and specific capacitance of 632 Fg−1 at a current density of 0.5 Ag−1 from GCD. These findings recommend a constructive route towards the preparation of NiFe2O4 electrodes for high-performance electrochemical supercapacitors.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"786 - 802"},"PeriodicalIF":1.6,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49102940","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
Impact of calcination temperature on structural and optical properties of erbium-doped zinc ferrite nanoparticles 煅烧温度对掺铒铁酸锌纳米颗粒结构和光学性能的影响
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-09-09 DOI: 10.1080/01411594.2022.2117622
Vijaya Kumar Katrapally, Sara Durga Bhavani
{"title":"Impact of calcination temperature on structural and optical properties of erbium-doped zinc ferrite nanoparticles","authors":"Vijaya Kumar Katrapally, Sara Durga Bhavani","doi":"10.1080/01411594.2022.2117622","DOIUrl":"https://doi.org/10.1080/01411594.2022.2117622","url":null,"abstract":"ABSTRACT Erbium-doped zinc ferrite nanoparticles (ZnFe1.9Er0.1O4) were prepared by the sol–gel auto-combustion method. In order to study the impact of calcination temperature, the prepared powder was divided into four parts and calcinated at 700, 900, 1100 and 1300°C. XRD confirmed the formation of a spinel structure with a single phase and Fd3m space group. Crystallite size increased from 19.45 to 30.22 nm with the increase in calcination temperature. SEM images showed agglomerated flakes having voids and pores on the surface. The average grain size increased from 157.76 to 237 nm with the increase in calcination temperature. FTIR showed two fundamental absorption bands related to octahedral and tetrahedral sites along with other three absorption bands in the frequency range 400–4000 cm−1. The optical energy bandgap was increased from 3.8166 to 4.2779 eV with the increase of calcination temperature. Hence, it is concluded that the optical energy bandgap can be tuned with the calcination temperature.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"770 - 785"},"PeriodicalIF":1.6,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46862060","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
Dielectric, electrical, magnetic, and mechanical properties of Ni-Al ferrite/PANI composite films Ni-Al铁氧体/PANI复合薄膜的介电、电学、磁学和力学性能
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-09-05 DOI: 10.1080/01411594.2022.2117043
E. A. Arrasheed, O. Hemeda, Y.A. Alibwaini, T. Meaz, R. Shalaby, A. Ajlouni, A. Henaish, B. Salem
{"title":"Dielectric, electrical, magnetic, and mechanical properties of Ni-Al ferrite/PANI composite films","authors":"E. A. Arrasheed, O. Hemeda, Y.A. Alibwaini, T. Meaz, R. Shalaby, A. Ajlouni, A. Henaish, B. Salem","doi":"10.1080/01411594.2022.2117043","DOIUrl":"https://doi.org/10.1080/01411594.2022.2117043","url":null,"abstract":"ABSTRACT The Ni-Al ferrite nanoparticles are synthesized by the flash auto-combustion method, and PANI is synthesized by the situ-chemical oxidative polymerization method. NiAl-ferrite/PANI/ x (PANI) Nanocomposite Films (x =  0.6 and 0.8) were prepared using a solution casting process. The X-ray results of the NiAlxFe2-xO4/PANI composite manifest that the Ni-Al ferrite fully interacted with PANI molecules and the Ni-Al ferrite particles are embedded in the PANI chains from TEM and SEM images. The dielectric parameters ϵ′, ϵ″ and tan δ decreased with the increase in the frequency of the applied field. The modulus M″ spectra of the investigated samples show two relaxation peaks in two frequency regions. In Cole–Cole plot of M′ versus M″, a semicircular trend is observed, i.e. a non-Debye criterion. The presence of PANI in the NiAl0.6Fe1.4O4/PANI composite films reduces the magnetic properties of the composite samples leading to the decrease of saturation magnetization and remanence magnetization.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"803 - 822"},"PeriodicalIF":1.6,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43762963","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
Sub-THz Raman response and soft phonon in tetragonal BaTiO3 四边形BaTiO3的亚太赫兹拉曼响应和软声子
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-09-05 DOI: 10.1080/01411594.2022.2117044
Inès Bejaoui Ouni, Hassen Aroui, M. Fontana
{"title":"Sub-THz Raman response and soft phonon in tetragonal BaTiO3","authors":"Inès Bejaoui Ouni, Hassen Aroui, M. Fontana","doi":"10.1080/01411594.2022.2117044","DOIUrl":"https://doi.org/10.1080/01411594.2022.2117044","url":null,"abstract":"ABSTRACT The sub-THz polarized Raman response was measured along the [100] direction in the tetragonal BaTiO3 single crystal. The soft phonon was detected as a resonance peak for the first time by Raman spectroscopy, thanks to the use of notch filters that suppressed elastic scattering. No relaxation peak was observed and we demonstrated that, contrary to the situation along the ferroelectric c-axis, the soft phonon is sufficient to describe the dielectric response of BaTiO3 along the a-axis, except in close vicinity of the tetragonal-cubic phase transition.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":" 46","pages":"749 - 757"},"PeriodicalIF":1.6,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41253574","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
Thermally induced phase transformation and structural modifications of E-beam evaporated zirconia thin films 电子束蒸发氧化锆薄膜的热致相变及其结构改性
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-09-02 DOI: 10.1080/01411594.2022.2096451
Ankit Kumar, Pravin Kumar, A. S. Dhaliwal
{"title":"Thermally induced phase transformation and structural modifications of E-beam evaporated zirconia thin films","authors":"Ankit Kumar, Pravin Kumar, A. S. Dhaliwal","doi":"10.1080/01411594.2022.2096451","DOIUrl":"https://doi.org/10.1080/01411594.2022.2096451","url":null,"abstract":"ABSTRACT The homogeneous zirconia thin films having a thickness of 250 nm synthesized on silicon substrate using an e-beam deposition technique and annealed in the temperature range of 600–1000°C have been investigated for phase transformations of zirconia. It has been observed from the X-ray diffraction (XRD) pattern and the Raman spectroscopy that phase transformation from cubic phase to monoclinic phase of zirconia occurred in the temperature range 600–800°C, despite the amorphous nature of deposited films. From Rietveld refinement studies, it has been found that crystalline phase in zirconia films annealed at 600°C, is cubic in nature. Further, the morphological studies revealed that the grain size of zirconia increases with an increase in the annealing temperature. It is expected that the present studies on structural and morphological properties of zirconia having an emphasis on its cubic phase stabilization shall help to explore its possibility in device applications.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"596 - 608"},"PeriodicalIF":1.6,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42407705","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
Monte Carlo study of the phase transitions in the classical XY ferromagnets with random anisotropy 具有随机各向异性的经典XY铁磁体相变的蒙特卡罗研究
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-08-22 DOI: 10.1080/01411594.2023.2246623
Olivia Mallick, M. Acharyya
{"title":"Monte Carlo study of the phase transitions in the classical XY ferromagnets with random anisotropy","authors":"Olivia Mallick, M. Acharyya","doi":"10.1080/01411594.2023.2246623","DOIUrl":"https://doi.org/10.1080/01411594.2023.2246623","url":null,"abstract":"ABSTRACT The three-dimensional anisotropic classical XY ferromagnet has been investigated by extensive Monte Carlo simulation using the Metropolis single spin flip algorithm. The magnetisation (M) and the susceptibility (χ) are measured and studied as functions of the temperature of the system. For constant anisotropy, the ferro-para phase transition has been found to take place at a higher temperature than that observed in the isotropic case. The system gets ordered at higher temperatures for higher values of the strength of anisotropy. The opposite scenario is observed in the case of random anisotropy. For all three different kinds of statistical distributions (uniform, Gaussian, and bimodal) of random anisotropy, the system gets ordered at lower temperatures for higher values of the width of the distribution of anisotropy. We have provided the phase boundaries in the case of random anisotropy. The critical exponents for the scaling laws and are estimated through the finite size analysis.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"96 1","pages":"668 - 686"},"PeriodicalIF":1.6,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46596414","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
Theoretical determination of vapour–liquid equilibrium pressure and vaporisation enthalpy of rubidium in the temperature range of 700 K–2017 K based on a modified Redlich–Kwong equation of state 700温度范围内铷汽液平衡压力和蒸发焓的理论测定 K–2017 K基于修正的Redlich–Kwong状态方程
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-08-17 DOI: 10.1080/01411594.2022.2109470
Kamala Rajagopal, B. Ramasamy
{"title":"Theoretical determination of vapour–liquid equilibrium pressure and vaporisation enthalpy of rubidium in the temperature range of 700 K–2017 K based on a modified Redlich–Kwong equation of state","authors":"Kamala Rajagopal, B. Ramasamy","doi":"10.1080/01411594.2022.2109470","DOIUrl":"https://doi.org/10.1080/01411594.2022.2109470","url":null,"abstract":"ABSTRACT Based on a four-parameter modified Redlich–Kwong equation of state (m-RK EoS), the vapour–liquid equilibrium pressure of rubidium over a temperature range of 700 K–2017 K is determined using Maxwell’s equal area construction. The obtained values of vapour pressure of rubidium agree with the literature values. In this work, the vapour pressure precision is taken as 10−5 Pa which is, in fact tuneable, depending upon the accuracy requirement. Correlations for the temperature-dependence of vapour pressure of rubidium are obtained through least square analysis based on the obtained vapour pressure data. Also, the curvature of the obtained reduced vapour pressure curve for rubidium is found to have a maximum at 1208.80 K. Moreover, the vaporisation enthalpy of rubidium is determined from the proposed vapour pressure correlation and has reasonable accuracy in the temperature of 700 K–1400 K.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"726 - 740"},"PeriodicalIF":1.6,"publicationDate":"2022-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41423294","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
Preparation of different crystal types TiO2 materials and its photodegradation performance in Congo Red wastewater 不同晶型TiO2材料的制备及其在刚果红废水中的光降解性能
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-08-16 DOI: 10.1080/01411594.2022.2107927
J. Tian, B. Tuo, Jianli Wang, Yun Tang, G. Nie, Yong-Hai Yang
{"title":"Preparation of different crystal types TiO2 materials and its photodegradation performance in Congo Red wastewater","authors":"J. Tian, B. Tuo, Jianli Wang, Yun Tang, G. Nie, Yong-Hai Yang","doi":"10.1080/01411594.2022.2107927","DOIUrl":"https://doi.org/10.1080/01411594.2022.2107927","url":null,"abstract":"ABSTRACT TiO2 gel was synthesized by the sol–gel method, and TiO2 photodegradation material (TiO2-PDM) was obtained after drying, grinding, and heat treatment, which was used for photodegradation of Congo Red wastewater. The Rietveld refinement method confirmed that the TiO2 material was anatase crystal when the calcination temperature was lower than 600°C. When the calcination temperature was between 600 and 750°C, the TiO2 material was anatase-rutile mixed crystal, and the proportion of rutile increased gradually. The content of the rutile crystal reached 98.3% at 800°C. Compared with TiO2-PDM at 800°C, TiO2-PDM at 500°C has a smaller crystal size and better dispersibility. The best photodegradation performance was identified as the 77.1% when the drying temperature was 80°C, the calcination temperature was 500°C, and the calcination time was 1.5 h. GRAPHICAL ABSTRACT The upper part is the preparation process of TiO2-PDM, and the lower part is the schematic diagram of the mechanism of TiO2-PDM degradation of Congo Red wastewater.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"707 - 725"},"PeriodicalIF":1.6,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49408510","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
Thermodynamic model to study the ferroelectric behaviour of lactic acid derivatives with keto linkage group 用热力学模型研究含酮键基乳酸衍生物的铁电行为
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-08-11 DOI: 10.1080/01411594.2022.2106227
Abhilasha Singh, S. R, A. Rastogi
{"title":"Thermodynamic model to study the ferroelectric behaviour of lactic acid derivatives with keto linkage group","authors":"Abhilasha Singh, S. R, A. Rastogi","doi":"10.1080/01411594.2022.2106227","DOIUrl":"https://doi.org/10.1080/01411594.2022.2106227","url":null,"abstract":"ABSTRACT The electro-optical and structural properties of chiral lactic acid derivatives with keto linkage group ((S)-4-((1-alkoxy-1-oxopropan-2-yloxy) carbonyl)phenyl4’-alkyloylbiphenyl-4-carboxylates denoted as KL n/m) exhibiting Sm C* phase and Sm A*−Sm C* phase transition have been studied by using a thermodynamic model based on Landau-de-Gennes theory. The free-energy density of the system is expanded in terms of three degrees of freedom – tensor orientational order , the scalar smectic order , the polarisation vector P, the wave vector q, and the couplings between these order parameters. The values of the Landau coefficients involved in the free-energy density have been calculated by comparing the experimental data of tilt angle, spontaneous polarisation, and pitch of KL n/m. The theoretical and experimental data have been analysed, and a close agreement has been found between the two.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"698 - 706"},"PeriodicalIF":1.6,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46286551","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
Thermal-induced structural distortion and charge transfer of Prussian blue analogues K0.4Co1.3[Fe(CN)6] • nH2O 普鲁士蓝类似物K0.4Co1.3[Fe（CN）6]•nH2O的热致结构畸变和电荷转移
IF 1.6 4区 材料科学
Phase Transitions Pub Date : 2022-08-08 DOI: 10.1080/01411594.2022.2110098
Zeyi Lu, Guo-qi Hu, Jiyu Shen, Renjie Zhang, Qinghang Zhang, Haiwen Chen, Yanfang Xia, Min Liu
{"title":"Thermal-induced structural distortion and charge transfer of Prussian blue analogues K0.4Co1.3[Fe(CN)6] • nH2O","authors":"Zeyi Lu, Guo-qi Hu, Jiyu Shen, Renjie Zhang, Qinghang Zhang, Haiwen Chen, Yanfang Xia, Min Liu","doi":"10.1080/01411594.2022.2110098","DOIUrl":"https://doi.org/10.1080/01411594.2022.2110098","url":null,"abstract":"Abstract In this paper, the Prussian blue analogues K0.4Co1.3[Fe(CN)6]•nH2O ([KCoFe]) were synthesized using the coprecipitation method at room temperature, 40, 60, 80 and 100 °C. XRD shows that as the preparation temperature increases, [KCoFe] undergoes structural distortion. The room temperature phase and the high temperature phase are both face-centered cubic (Fm-3 m) structures with lattice constants of 10.230 Å and 9.980 Å, respectively. Mössbauer spectrum analysis showed that due to the increase of synthesis temperature, [KCoFe] has undergone charge transfer induced spin transition. Part of paramagnetic structure: FeІІІ ( , S = 1/2)–CN–CoІІ ( , S = 3/2) was transformed into diamagnetic structure: FeІІ ( , S = 0)–CN–CoІІІ ( , S = 0). This work provides new ideas for designing new Prussian blue analogues magnetic materials. Keyword: Thermal-induced, Prussian blue analogues, Structural distortion, Charge transfer.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"95 1","pages":"741 - 747"},"PeriodicalIF":1.6,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48106084","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
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