Article
Chemistry, Physical
Jyoti Rani, Varun K. Kushwaha, Piyush K. Patel, C. Tomy
Summary: The lead-free (BZT-0.5BCT)/CFO/(BZT-0.5BCT) trilayer thin film with strong ME coupling at room temperature exhibited excellent dielectric and magnetoelectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Chhavi Mitharwal, Geetanjali, Shilpa Malhotra, Anshika Bagla, Manish Kumar Srivastava, Surya Mohan Gupta, Chandra Mohan Singh Negi, Epsita Kar, Ajit R. Kulkarni, Supratim Mitra
Summary: The dopamine-modified filler incorporated PVDF composite shows potential for flexible energy storage and harvesting applications. The composite exhibits improved filler dispersion and dielectric properties, leading to enhanced energy harvesting and storage capabilities. Different filler contents result in varying energy storage density and energy harvesting performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Amir Mahdi Molavi, Parvin Alizadeh
Summary: Multiferroic composite materials with one-dimensional core-shell structure were successfully synthesized by electrospinning for the first time, and the influence of different synthesis routes on the properties of the composite fibers was investigated, with the second method showing higher saturation magnetization and dielectric constant.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Ahmed Gadelmawla, David Dobesh, Udo Eckstein, Oliver Gruebl, Matthias Ehmke, Maria Rita Cicconi, Neamul H. Khansur, Dominique de Ligny, Kyle G. Webber
Summary: The influence of stress on the phase boundaries and dielectric response of lead-free perovskite ceramics was investigated. The results showed that the phase transition temperatures increased and the dielectric and piezoelectric responses decreased with increasing stress. Additionally, applying stress at certain temperatures could enhance the dielectric properties of the ceramics.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Vladimir Lucian Ene, Valentin Razvan Lupu, Claudiu Vasile Condor, Roxana Elena Patru, Luminita Mirela Hrib, Luminita Amarande, Adrian Ionut Nicoara, Lucian Pintilie, Adelina-Carmen Ianculescu
Summary: Fine-tuning of grain sizes can greatly affect the interaction between different dielectric phenomena, allowing the development of materials with tailored dielectric responses. Understanding the relationship between grain size and dielectric properties can lead to the design and optimization of materials for specific applications.
Article
Physics, Applied
Xijie Jiang, Christian Dietz, Na Liu, Virginia Rojas, Robert W. Stark
Summary: The study using piezoresponse force microscopy revealed the evolution of domain structures in BZT-0.5BCT ceramics at micrometer and nanometer scales, showing the coexistence of wedge-shaped and lamellar domains at room temperature, with transitional domain structures appearing in both thermal and poling cycles. Additionally, the electric-field-dependent domain structure evolution demonstrated better reversibility at high temperatures, highlighting the superior stability of BZT-0.5BCT ceramics at medium temperatures for applications.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Chris M. Fancher, Ozgur Keles, Matthias Ehmke, Keith J. Bowman
Summary: This study used temperature-dependent in situ x-ray diffraction to investigate the evolution of the field-response mechanism of ferroelectric materials with temperature. The results showed that increasing the measurement temperature slightly reduced the extent of domain reversal and lattice strain magnitude, while predominantly affecting the angular dependence of the lattice strain.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Ceramics
Amir Mahdi Molavi, Parvin Alizadeh
Summary: BZT-0.5BCT nanofibers were prepared by sol-gel assisted electrospinning and post-calcination process. The study revealed three stages of polymer decomposition below 500 degrees C, oxide formation starting at around 300 degrees C, low crystallization temperature of 550 degrees C, and Curie temperature between 120 and 150 degrees C.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
K. Dey, A. Ahad, K. Gautam, A. Tripathy, S. S. Majid, S. Francoual, C. Richter, M. N. Singh, A. Sagdeo, E. Welter, N. Vittayakorn, V. G. Sathe, R. Rawat, D. K. Shukla
Summary: This study demonstrates the relationship between structure and properties in tetragonal BZT-BCT ceramics, including local and average structure, macroscopic electromechanical and dielectric measurements. Polar nanoregions are manifested during the high-temperature cubic to tetragonal phase transformation, and an anomalous collaboration between ZrO6 and TiO6 octahedra is revealed through temperature-dependent local structural investigations.
Article
Chemistry, Physical
Suk-Young Jung, Gwangseop Lee, Tae-wan Kim, Sung-Jin Kim, Jung-Hyuk Koh
Summary: In this study, the characteristics of the lead-free piezoelectric ceramic 0.5BZT-0.5BCT were investigated for its potential use in piezoelectric transformers. The addition of a suitable dopant resulted in a piezoelectric transformer with improved output characteristics. Simulation and experimental results were compared and analyzed to validate the step-up amplification properties of the piezoelectric transformer at the vibrational frequency.
Article
Materials Science, Multidisciplinary
Yoo-Young Oh, Gwangseop Lee, Masao Kamiko, Jung-Hyuk Koh
Summary: This study focuses on the shrinkage phenomenon during the sintering process of lead-free piezoelectric ceramics, and determines the relationship between the piezoelectric and crystalline properties by estimating the activation energy. The results show that the sintering temperature can affect the piezoelectric and crystalline properties.
KOREAN JOURNAL OF METALS AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Moolchand Sharma, Satyanarayan Patel, A. Arockiarajan, Rahul Vaish
Summary: The study conducted creep and fatigue characterization on BZT-BCT bulk ferroelectric ceramics, finding that the material is stable below 75 degrees Celsius and can withstand high cycle fatigue loads, showing promise for potential applications.
FUNCTIONAL MATERIALS LETTERS
(2021)
Article
Materials Science, Ceramics
E. Venkata Ramana, N. M. Ferreira, A. Mahajan, D. M. Tobaldi, I Bdikin, B. Rozic, Z. Kutnjak, M. A. Valente
Summary: High-performance BCZT fiber crystals were grown using laser-heated pedestal growth, with varying stoichiometry achieved by changing growth rate. The optimized crystal showed larger energy storage density and higher EC responsivity compared to ceramic samples. These results suggest potential applications of BCZT as EC elements with controlled composition through fine-tuning growth parameters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Nicholas Cucciniello, Alessandro R. Mazza, Pinku Roy, Sundar Kunwar, Di Zhang, Henry Y. Feng, Katrina Arsky, Aiping Chen, Quanxi Jia
Summary: With the anticipated doubling of energy demand in the next three decades, there is a pressing need to advance the technology of energy harvesting and storage for renewable energy. This study focuses on a specific subset of dielectric materials, ferroelectrics, for energy storage. By exploring the influence of crystallographic orientation on the microstructure and properties, the research offers insights into enhancing energy storage performance.
Article
Materials Science, Multidisciplinary
N. S. Kiran Kumar, A. R. Jayakrishnan, J. P. B. Silva, K. C. Sekhar
Summary: This study investigates the impact of MgO doping on the microstructure, dielectric, ferroelectric, energy storage, and electrocaloric properties of lead-free ceramics. The results show that as the MgO content increases, the grain size decreases, and a morphotropic phase boundary behavior is observed at low MgO content. The addition of MgO also improves the diffused phase transition behavior and enhances the relaxor behavior of the ceramics. The optimum energy storage properties are exhibited by the 0.99BZCT-0.01MgO ceramics, with a recoverable energy density of 177.6 mJ/cm3 and an efficiency of 79% at an electric field of 45 kV/cm. Additionally, these ceramics demonstrate a robust energy storage performance even after 107 cycles, and exhibit an electrocaloric temperature change of 1.12 K and responsivity of 0.024 Kcm/kV.
MATERIALS TODAY COMMUNICATIONS
(2023)
Review
Materials Science, Coatings & Films
Hanan Alexandra Hsain, Younghwan Lee, Monica Materano, Terence Mittmann, Alexis Payne, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: This review summarizes the process knowledge accumulated in the field of ferroelectric HfO2 over the past 10 years. It examines the effect of process parameters in different deposition methods on film microstructure, phase evolution, defect concentration, and electrical properties. The goal is to provide a comprehensive guide for the design of future HfO2-based ferroelectric materials and devices.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Article
Chemistry, Physical
Andreas Wohninsland, Ann-Katrin Fetzer, Rachel Broughton, Jacob L. Jones, K. V. Lalitha
Summary: Quenching of lead-free Na1/2Bi1/2TiO3-based ceramics from sintering temperature is found to delay the field-induced phase transformations and stabilize the ferroelectric order. In addition, quenching leads to reduced volumetric strain and increased lamellar domain contrast in the materials.
JOURNAL OF MATERIOMICS
(2022)
Article
Nanoscience & Nanotechnology
Hanan Alexandra Hsain, Younghwan Lee, Suzanne Lancaster, Monica Materano, Ruben Alcala, Bohan Xu, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: Hafnia-zirconia (HfO2-ZrO2) solid solution thin films show promise for electronic applications due to their compatibility with Si technology and demonstrated ferroelectricity at the nanoscale. The oxygen source in atomic layer deposition (ALD) plays a crucial role in determining the impurity concentration and phase composition of HfO2-ZrO2 within metal-ferroelectric-metal devices. This study found that HZO films grown via O2-plasma promote the development of an interfacial TiOx layer, affecting the structural and chemical differences of the films.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Samantha T. Jaszewski, Eric R. Hoglund, Anna Costine, Marc H. Weber, Shelby S. Fields, Maria Gabriela Sales, Jaykumar Vaidya, Leah Bellcase, Katie Loughlin, Alejandro Salanova, Diane A. Dickie, Steven L. Wolfley, M. David Henry, Jon -Paul Maria, Jacob L. Jones, Nikhil Shukla, Stephen J. McDonnell, Petra Reinke, Patrick E. Hopkins, James M. Howe, Jon F. Ihlefeld
Article
Chemistry, Physical
Shaun O'Donnell, D. J. Osborn, Gowri Krishnan, Theresa Block, Aylin Koldemir, Thomas D. Small, Rachel Broughton, Jacob L. Jones, Rainer Pottgen, Gunther G. Andersson, Gregory F. Metha, Paul A. Maggard
Summary: This study presents a method for synthesizing metastable Sn(Zr1/2Ti1/2)O-3 (SZT) dielectric through a low-temperature flux reaction. The results show that SZT nanoshells can grow and be stabilized on the surfaces of Ba(Zr1/2Ti1/2)O-3 (BZT) particles, forming BZT-SZT core-shell structures, through Sn(II) cation exchange. In situ powder X-ray diffraction and transmission electron microscopy data reveal that the SZT nanoshells are formed by controlled cation diffusion of Sn(II) cations into the BZT particles, with adjustable thicknesses.
CHEMISTRY OF MATERIALS
(2022)
Article
Physics, Applied
Younghwan Lee, Rachel A. Broughton, H. Alex Hsain, Seung Keun Song, Patrick G. Edgington, Madison D. Horgan, Amy Dowden, Amanda Bednar, Dong Hyun Lee, Gregory N. Parsons, Min Hyuk Park, Jacob L. Jones
Summary: This study investigates the influence of texture of the bottom electrode and Hf0.5Zr0.5O2 (HZO) films on properties and performance, using a consistent deposition process known as Sequential, No-Atmosphere Processing (SNAP). The results provide new insights on the importance of the bottom electrode texture and new fundamental processing-structure-property relationships for the HZO films.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
H. Alex Hsain, Younghwan Lee, Suzanne Lancaster, Patrick D. Lomenzo, Bohan Xu, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: By inserting a 1 nm Al2O3 layer at the HZO/TiN interface, a protective passivating layer is introduced, resulting in improved remanent polarization and endurance of TiN/HZO/TiN capacitors.
Article
Physics, Applied
H. Alex Hsain, Younghwan Lee, Patrick D. Lomenzo, Ruben Alcala, Bohan Xu, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: Ferroelectric hafnium-zirconium oxide (HZO) is a promising material for low-power non-volatile memory applications due to its ferroelectricity at the nanoscale and compatibility with silicon-based technologies. The interface between HZO and its electrode is crucial for device performance. In this study, the effect of breaking vacuum during the sequential deposition steps is investigated. The results show that breaking vacuum after bottom electrode deposition leads to interfacial oxidation and increased carbon contamination, which affect the ferroelectric properties.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Madison D. Horgan, H. Alex Hsain, Jacob L. Jones, Khara D. Grieger
Summary: Analysis of the environmental, health, and societal impacts of lead-free piezoelectrics is crucial for materials development. The screening-level EMRA approach proposed in this paper is used to compare mining and processing routes for hafnia, a potential replacement for PZT, and identify the more sustainable route.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Changhao Zhao, Sergey Prosandeev, Laurent Bellaiche, Fei Li, Shujun Zhang, Shengtao Li, Jacob L. Jones
Summary: In this study, the structural characteristics of the relaxor ferroelectric lead magnesium niobate (PMN) at different length scales are investigated using theoretical simulations and pair distribution function (PDF) analysis. The results reveal a disordered low-symmetry structure at the smallest length scale and a cubic crystallographic average structure at large length scale. Furthermore, a rhombohedral phase is found at the intermediate length scale due to chemical ordered regions with ordered local electric fields and quasi-correlated Pb displacements.
Review
Plant Sciences
Imani Madison, Lydia Gillan, Jasmine Peace, Flavio Gabrieli, Lisa van den Broeck, Jacob L. Jones, Rosangela Sozzani
Summary: Phosphorus is crucial for plant growth and crop yields, but its application in agriculture faces challenges such as pollution and low bioavailability. Understanding uptake and signaling mechanisms can help develop strategies to address these issues.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Nanoscience & Nanotechnology
Jose P. B. Silva, Ruben Alcala, Uygar E. Avci, Nick Barrett, Laura Begon-Lours, Mattias Borg, Seungyong Byun, Sou-Chi Chang, Sang-Wook Cheong, Duk-Hyun Choe, Jean Coignus, Veeresh Deshpande, Athanasios Dimoulas, Catherine Dubourdieu, Ignasi Fina, Hiroshi Funakubo, Laurent Grenouillet, Alexei Gruverman, Jinseong Heo, Michael Hoffmann, H. Alex Hsain, Fei-Ting Huang, Cheol Seong Hwang, Jorge Iniguez, Jacob L. Jones, Ilya V. Karpov, Alfred Kersch, Taegyu Kwon, Suzanne Lancaster, Maximilian Lederer, Younghwan Lee, Patrick D. Lomenzo, Lane W. Martin, Simon Martin, Shinji Migita, Thomas Mikolajick, Beatriz Noheda, Min Hyuk Park, Karin M. Rabe, Sayeef Salahuddin, Florencio Sanchez, Konrad Seidel, Takao Shimizu, Takahisa Shiraishi, Stefan Slesazeck, Akira Toriumi, Hiroshi Uchida, Bertrand Vilquin, Xianghan Xu, Kun Hee Ye, Uwe Schroeder
Summary: Ferroelectric hafnium and zirconium oxides have shown significant progress in ultralow-power electronic systems, but technical limitations still hinder their application. This article aims to provide a comprehensive overview of the current state, challenges, and prospects for the development of these materials, with the collaboration of experts from different fields.
Article
Nanoscience & Nanotechnology
Hanan Alexandra Hsain, Younghwan Lee, Suzanne Lancaster, Monica Materano, Ruben Alcala, Bohan Xu, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: Hafnia-zirconia (HfO2-ZrO2) solid solution thin films have emerged as viable candidates for electronic applications due to their compatibility with Si technology and demonstrated ferroelectricity at the nanoscale. The oxygen source in atomic layer deposition (ALD) plays a crucial role in determining the impurity concentration and phase composition of HfO2-ZrO2 within metal-ferroelectric-metal devices, notably at the Hf0.5Zr0.5O2 /TiN interface. The interface characteristics of HZO/TiN are fabricated via sequential no-atmosphere processing (SNAP) with either H2O or O-2-plasma to study the influence of oxygen source on buried interfaces. Time-of-flight secondary ion mass spectrometry reveals that HZO films grown via O-2-plasma promote the development of an interfacial TiO(x )layer at the bottom HZO/TiN interface. The presence of the TiOx layer leads to the development of 111-fiber texture in HZO as confirmed by two-dimensional X-ray diffraction (2D-XRD). Structural and chemical differences between HZO films grown via H2O or O-2-plasma were found to strongly affect electrical characteristics such as permittivity, leakage current density, endurance, and switching kinetics. While HZO films grown via H2O yielded a higher remanent polarization value of 25 mu C/cm(2), HZO films grown via O-2-plasma exhibited a comparable Pr of 21 mu C/cm(2) polarization and enhanced field cycling endurance limit by almost 2 orders of magnitude. Our study illustrates how oxygen sources (O-2-plasma or H2O) in ALD can be a viable way to engineer the interface and properties in HZO thin films.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Eric A. Gabilondo, Ryan J. Newell, Jessica Chestnut, James Weng, Jacob L. Jones, Paul A. Maggard
Summary: For the first time, Sn(ii)-based perovskite oxides were synthesized in the form of nano eggshell particles. A new approach using a low-melting salt was discovered to overcome the metastability of Sn(ii)-perovskite oxides. The resulting particles exhibited nanoshell-over-nanoshell morphologies and showed high purity. These findings have important implications for synthesizing metastable oxides.
NANOSCALE ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Bo Jiang, Changhao Zhao, Peter C. Metz, Palani Raja Jothi, Benard Kavey, Linda Reven, Michael Lindner-D'Addario, Jacob L. Jones, Gabriel Caruntu, Katharine Page
Summary: The temperature-dependent local structure evolution of surface functionalized barium titanate nanocrystals is investigated, revealing that nanocubes capped with polar BF4- ligands undergo sharper ferroelectric to paraelectric phase transitions than those capped with nonpolar OA ligands and exhibit enhanced ferroelectric order.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
