Article
Materials Science, Ceramics
Andre Maia, Christelle Kadlec, Maxim Savinov, Rui Vilarinho, Joaquim Agostinho Moreira, Viktor Bovtun, Martin Kempa, Martin Misek, Jiri Kastil, Andriy Prokhorov, Jan Manak, Alexei A. Belik, Stanislav Kamba
Summary: Type-II multiferroics show large magnetoelectric coupling and are promising for new device functionalities. We report a new multiferroic material, BiMn3Cr4O12, where an antiferromagnetic phase is induced by the structural change at the ferroelectric phase transition. Thermodynamic, dielectric, and pyroelectric studies reveal that the ferroelectric critical temperature corresponds to the Ne'el temperature of the Cr3+ spins, and an increase in ferroelectric polarization is observed below the Ne'el temperature of the Mn3+ spins.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Optics
Asaf Farhi, Aristide Dogariu
Summary: The interaction between helical structures and oscillating dipoles can lead to strong and selective responses. The identification of coherent oscillation modes through vibrational and eigenfunction analyses may explain the diverse functionality of cytoskeletal microtubules in the cellular environment.
Article
Materials Science, Ceramics
Yiyang Wen, Chongjun He, Lianxu Ye, Xingrong Zhu, Chenguang Deng, Ruixing Xu, Ziyun Chen, Hao Yang, Feifei Wang, Yuangang Lu, Youwen Liu
Summary: This study successfully synthesized a lead-free ferroelectric single crystal (Ba0.77Ca0.23TiO3) using an improved Czochralski method. The BCT crystal showed excellent piezoelectric, ferroelectric, and dielectric properties, particularly when oriented along the <001> direction.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Condensed Matter
Raouia Ben Sadok, Dalila Hammoutene, Neculai Plugaru
Summary: New phase transitions in CsPbBr3 driven by soft phonon modes were predicted using first-principles lattice dynamics calculations, with a ferroelectric phase found to be more stable than experimentally observed phases. All predicted structures exhibit semiconductor characteristics, with bandgap values influenced by the Pb-Br bond length and PbBr6 octahedron rotation angle. The dielectric tensor, Born effective charges, and spontaneous polarization were also calculated for the new phases.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Feifan Wang, Yongping Fu, Mark E. Ziffer, Yanan Dai, Sebastian F. Maehrlein, X-Y Zhu
Summary: The article introduces the concept of ferroelectric large polarons, which efficiently screen electrons or holes by extended ordering of dipoles from symmetry-broken unit cells. It suggests that the ferroelectric large polaron may explain the exceptional optoelectronic properties of lead halide perovskites.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Mariya Aleksandrova, Ivailo Pandiev
Summary: This paper discusses impedance measurements of ferroelectric structures involving lead-free oxide and polymer-oxide composite coatings for sensing and energy harvesting applications. Three different ferroelectric materials grown on solid or flexible substrates are investigated for their basic resonant characteristics, with equivalent electrical circuit models applied to explain their electrical behavior. Temperature and frequency dependences of the dielectric permittivity and losses are also measured for the polymer-oxide composite device.
Article
Chemistry, Physical
Faysal Naeem, Mohsin Saleem, Hamid Jabbar, Gulraiz Tanvir, Fiza Asif, Abrar H. Baluch, Muhammad Irfan, Abdul Ghaffar, Adnan Maqbool, Tayyab Rafiq
Summary: This work successfully synthesized lead-free piezoelectric ceramics 0.74(Bi0.5Na0.5TiO3)-0.26(SrTiO3) (BNT-ST26) and niobium-substituted (Nb-BNT-ST26), and confirmed the effect of niobium substitution on the perovskite phase structure of BNT-ST26 ceramics through X-ray diffraction and Raman spectra. Electromechanical properties revealed that addition of 0.5% niobium resulted in the optimal piezoelectric performance and dielectric effect, making it suitable for high-temperature, stable, frequency-dependent, lead-free piezoelectric devices.
Article
Engineering, Electrical & Electronic
Jinfeng Zhou, Hao Zhu, Jun Wang, Si Gao, Jin Luo, Yunfei Liu, Yinong Lyu
Summary: Relaxor ferroelectric thin films with suppressed shallow trap defects achieved high energy storage performances through Mn doping. The Mn-doped SBT-BT relaxor ferroelectric thin films exhibited improved energy storage density, efficiency, fatigue resistance, frequency stability, and temperature stability. These results highlight the high energy storage performance and potential applications of SBT-BT-based relaxor ferroelectric thin films in energy storage systems. Importantly, this work provides an effective approach to enhance energy storage performances through shallow trap defect quenching.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
V. V. Enaldiev, F. Ferreira, S. J. Magorrian, Vladimir Fal'ko
Summary: Twistronic van der Waals heterostructures provide exciting opportunities for engineering optoelectronic properties of nanomaterials, with moire superlattice structures playing a key role. Multiscale modeling reveals a rich variety of confinement conditions for charge carriers and excitons in twistronic bilayers, influenced by ferroelectric polarization and piezoelectric effects. Different alignment angles lead to unique trapping and quantum box effects for electrons, holes, and excitons, highlighting the importance of precise alignment for reproducible electronic characteristics in such heterostructures.
Article
Materials Science, Multidisciplinary
Jianwei Zhao, Stephen D. Funni, Emily R. Molina, Elizabeth C. Dickey, Jacob L. Jones
Summary: Under the application of an external voltage, high electric field concentrations develop around the interdigitated electrode edges inside multilayer ceramic actuators (MLCAs). The local inhomogeneity in the electromechanical response is caused by the spatial distribution of the local electrical field. By utilizing synchrotron-based high-energy X-ray diffraction (XRD), the structural changes in partially electroded Nb-doped PbZrxTi1-xO3 samples as a function of applied electric field were investigated. The results show that the domain switching behavior and phase transitions are spatially dependent across the inactive regions in partially electroded samples, especially near the electrode edge and the tetragonal composition near the morphotropic phase boundary (MPB).
Article
Materials Science, Ceramics
Anna Z. Szeremeta, Andrzej Nowok, Maciej Zubko, Sebastian Pawlus, Irena Gruszka, Janusz Koperski, Andrzej Molak
Summary: This study compared the dielectric properties of two new materials, revealing that the dielectric permittivity and losses of the BM-PT-epoxy composite were two orders of magnitude lower than those of the BM-PT ceramics, opening up new possibilities for applications. Experimental observations showed that both hydrostatic pressure and interfacial interactions can affect the electrical features of the ceramics, leading to a shortening of relaxation times.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xinyi Zhou, Kai Liu, Zilin Yan, Bing Xie, Pengyuan Fan, Sheng-Gui Chen, Chanatip Samart, David Salamon, Hua Tan, Zhongming Fan, Haibo Zhang
Summary: Ceramic-based dielectrics have been widely used in pulsed power capacitors due to their good mechanical and thermal properties. This study introduced the relaxor ferroelectric material SBT into the NBT system to reduce remnant polarization. The results showed that increasing the SBT content reduced grain size and maximum dielectric constant, while shifting the dielectric shoulder to lower temperatures. The 0.45NBT-0.55SBT sample exhibited the best energy storage performance.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Bablu Chandra Das, M. A. Matin, A. K. M. Akther Hossain
Summary: In this study, the BSZT compound was prepared and sintered at different temperatures to investigate its structural, morphological, dielectric, and ferroelectric properties. It was found that tetragonality and denseness of the microstructure are highest at 1250 degrees C, indicating a transformation to cubic structure and a weakening of relaxor ferroelectric behavior with further increase in sintering temperature. Additionally, the significant improvement in ferroelectric properties was observed with increasing sintering temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Zifeng He, Huiqin Li, Zhu Qing, Mengshi Zeng, Jun li, Lulu Zhou, Xiaoyan Zhong, Jingsong Liu
Summary: The study developed a lead-free relaxor ferroelectric ceramic with low sintering temperature and good temperature stability, which can meet X8R specification for capacitance-temperature dependence at 1140 degrees Celsius. This ceramic also displayed good energy storage and charge-discharge performance, making it suitable for operation in a wide range of temperatures.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Weijie Zheng, Jiaqi Lin, Xinmei Liu, Wenlong Yang, Yuanshuo Li
Summary: The study systematically investigated the effect of co-doping Ce and Sb on the performance of BCZTC ceramics, showing significant improvements in structure, properties, and microstructure. The co-doped ceramics exhibited enhanced grain growth, relative density, and electrical performance, making them promising candidates for lead-free devices.
Article
Polymer Science
Carmen Moya-Lopez, Ivan Bravo, Jose A. Castro-Osma, David Chapron, Patrice Bourson, Christelle Vagner, Marianne Cochez, Nils Leone, Agustin Lara-Sanchez, Carlos Alonso-Moreno, Daniel Hermida-Merino
Summary: In this study, high molecular weight stereo-diblock copolymers were synthesized using a one pot-sequential addition method assisted by a heteroscorpionate catalyst without a co-initiator. The catalyst showed a coordination-insertion process in the mechanism of reaction. Kinetic studies and polydispersity analysis supported the living polymerization nature of the catalyst with low transesterification. The high stereo-control of the obtained derivatives was confirmed by spectroscopy and polarimetry measurements. The nanostructure of the copolymers was identified using wide-angle X-ray scattering and differential scanning calorimetry.
Article
Chemistry, Physical
Alexander Stangl, Adeel Riaz, Laetitia Rapenne, Jose Manuel Caicedo, Juan de Dios Sirvent, Federico Baiutti, Carmen Jimenez, Albert Tarancon, Michel Mermoux, Monica Burriel
Summary: La2NiO4 thin film electrodes with a nano-architectured structure exhibit enhanced oxygen exchange activity, achieved by tailoring morphology to vertically gapped columns. The increased surface area and opening of different surface terminations significantly enhance the total exchange activity in the films.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Quentin Micard, Giacomo Clementi, Ausrine Bartasyte, Paul Muralt, Guglielmo G. Condorelli, Graziella Malandrino
Summary: The impact of Dy doping on the ferroelectric, dielectric, and pyroelectric properties of BiFeO3 films was investigated. It was found that Dy doping significantly increases the dielectric response and pyroelectric coefficient, with the best performance achieved at a concentration of 8% Dy. The results show that Dy-doped lead-iron oxide films have high thermal energy harvesting efficiency.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Crystallography
Eric Bouhari, Ballo Mohamadou, Patrice Bourson
Summary: The present work introduces a new method for computing the clamped linear electro-optical coefficients using measured vibrational frequencies and dielectric susceptibility constants. The results show good agreement with direct measurements and other models. Additionally, the calculations accurately determine the r51 or r42 coefficients of tetragonal crystals and discuss their soft mode behavior.
Article
Chemistry, Multidisciplinary
Carlos Moncasi, Gauthier Lefevre, Quentin Villeger, Laetitia Rapenne, Herve Roussel, Ahmad Bsiesy, Carmen Jimenez, Monica Burriel
Summary: Interface-type valence change memories are promising candidates for resistive random access memories and artificial synapses. This study focuses on the role of LSM perovskite's nanostructure in memristive device performance and shows that nanostructure engineering is a promising approach for optimizing the performance of memristive devices.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Dorina T. Papanastasiou, Abderrahime Sekkat, Viet Huong Nguyen, Carmen Jimenez, David Munoz-Rojas, Franz Bruckert, Daniel Bellet
Summary: This paper introduces a transparent heater based on silver nanowire networks, protected with a transparent zinc oxide film, for temperature control in biological experiments under transparent microscopic observation. The experimental results demonstrate that the nanocomposites allow rapid and reproducible heating under low applied voltage, and achieve selective heating in different zones of microchannels or adjacent microchannels at different temperatures.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Alexander Stangl, Dolors Pla, Caroline Pirovano, Odette Chaix-Pluchery, Federico Baiutti, Francesco Chiabrera, Albert Tarancon, Carmen Jimenez, Michel Mermoux, Monica Burriel
Summary: A novel in situ methodology using Raman spectroscopy coupled to isothermal isotope exchanges is developed for studying mass-transport properties in oxides with unprecedented time resolution. The method provides real-time monitoring of isotope concentration changes through Raman frequency shift, offering complementary insights for understanding ion-transport properties in advanced solid-state electrochemical devices. The results obtained through isotope exchange Raman spectroscopy (IERS) are in good agreement with conventional characterization methods, while providing additional insights, challenging established assumptions. The versatility, simplicity, and cost-effectiveness of IERS make it a promising tool for in situ and operando characterization in various fields.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Lea La Spina, Quentin Micard, Alexis Mosset, Samuel Margueron, Ausrine Bartasyte, Vincent Laude
Summary: Epitaxial thin films of lithium niobate were grown by direct liquid injection chemical vapor deposition on c-sapphire substrates, exhibiting different families of high-frequency surface acoustic waves. Surface Brillouin light scattering measurements and fast finite element analysis revealed Rayleigh, leaky shear, and leaky longitudinal surface waves excited at frequencies between 10 and 30 GHz, without the need for high-frequency surface acoustic wave transducers.
APPLIED PHYSICS LETTERS
(2023)
Review
Engineering, Electrical & Electronic
Ausrine Bartasyte, Giacomo Clementi, Quentin Micard, Ishamol Labbaveettil, Arthur Sousa Lopes Moreira, Sondes Boujnah, Merieme Ouhabaz, Anjenya Verma, Arun Ichangi, Graziella Malandrino, Sanjay Mathur, Bernard Dulmet, Samuel Margueron
Summary: In the past four decades, energy microsources based on piezoelectric energy harvesting have been extensively studied for applications in autonomous sensor systems. The research aims to replace traditional lead-based piezoelectric ceramics with environmentally friendly lead-free materials and to deploy energy-harvesting microsystems in various fields. Further research is required to develop sustainable materials/systems with high-performance. This paper provides a comprehensive overview on the processing and functional testing of lead-free materials and thin films for piezoelectric energy harvesting and discusses their potential applications.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Article
Chemistry, Physical
Jose Villafuerte, Xiaoting Zhang, Eirini Sarigiannidou, Fabrice Donatini, Odette Chaix-Pluchery, Laetitia Rapenne, Minh-Quyen Le, Lionel Petit, Julien Pernot, Vincent Consonni
Summary: Piezoelectric devices made of ZnO nanowires have attracted great interest as potential nanogenerators and sensors in the past decade. However, their characteristics are limited by the screening effect of the piezoelectric potential generated under mechanical solicitations. To address this issue, we developed the compensatory Sb doping of ZnO nanowires and achieved significant incorporation of Sb dopants.
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Polymer Science
Carolina Hermida-Merino, David Cabaleiro, Carlos Gracia-Fernandez, Jesus Valcarcel, Jose Antonio Vazquez, Noelia Sanz, Martin Perez-Rodriguez, Maria Arenas-Moreira, Dipanjan Banerjee, Alessandro Longo, Carmen Moya-Lopez, Luis Lugo, Patrice Bourson, Ana B. Pereiro, Georges Salloum-Abou-Jaoude, Ivan Bravo, Manuel M. Pineiro, Daniel Hermida-Merino
Summary: Ionogels, created by using perfluorinated ionic liquid (FIL) as a cosolvent, have been successfully developed to enhance the drug solubility and maintain the mechanical properties of the drug delivery system network. The study also demonstrated the correlation between the nanostructure and drug solubility in FIL/shark gelatin Ionogels.
Article
Chemistry, Inorganic & Nuclear
Viet Huong Nguyen, Masoud Akbari, Abderrahime Sekkat, Huong T. T. Ta, Joao Resende, Carmen Jimenez, Kevin P. Musselman, David Munoz-Rojas
Summary: SnO2 thin films have attracted much attention due to their unique properties and potential applications in gas sensors, catalysis, low-emissivity coatings, and low-cost solar cells. However, the low-cost and high-throughput fabrication of SnO2 thin films remains a challenge. In this study, several metalorganic tin-based complexes were explored as precursors for atomic layer deposition (ALD) of SnO2 thin films. The use of tin(ii) acetylacetonate and water as precursors in atmospheric-pressure spatial ALD (AP-SALD) was experimentally demonstrated for the first time, resulting in the growth of high-quality SnO2 thin films.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Quang Chieu Bui, Gustavo Ardila, Herve Roussel, Carmen Jimenez, Isabelle Gelard, Odette Chaix-Pluchery, Xavier Mescot, Sarah Boubenia, Bassem Salem, Vincent Consonni
Summary: The research investigates the impact of O-2 gas and DEZn solution flow rates on properties of ZnO thin films, finding that the piezoelectric amplitude of ZnO thin films is significantly affected by the O-2/DEZn flow rate ratio, with Zn-polarity domains exhibiting a larger amplitude than O-polarity domains. Additionally, a comprehensive description of the formation process through different regimes is gained.
MATERIALS ADVANCES
(2022)
