Articles tagged with Ferroelectric Polarization
The researchers successfully switched the chirality of phonons within a ferroelectric crystal using an electric field, enabling active control of spin. This breakthrough could lead to the creation of faster and more energy-efficient spintronic devices.
Researchers employed terahertz time-domain spectroscopy to investigate oxygen-vacancy migration in amorphous ZrO2 films, revealing its critical role in conductivity and polarization behavior. The study establishes a physical framework for understanding ferroelectric-like phenomena in amorphous oxide materials.
Researchers have developed a novel technique to observe real-time domain wall behavior in ferroelectric materials during 'poling' and 'depoling', providing deeper insights into the mechanisms at play. This breakthrough resolves longstanding debates about AC and DC poling, shedding light on the polarization state of these materials.
Researchers from TU Delft and Radboud University discovered CuInP₂S₆ (CIPS), a two-dimensional ferroelectric material, can control the pathway and properties of blue and ultraviolet light. CIPS shows giant birefringence in the blue-UV range, making it a potential game-changer for photonics applications.
Researchers at the University of Arkansas have developed a lead-free alternative to essential electronics component ferroelectric materials. By applying mechanical strain, they enhanced lead-free ferroelectrics, opening possibilities for devices and sensors implanted in humans.
Researchers at the University of Michigan have discovered a mechanism that holds new ferroelectric semiconductors together, enabling high power transistors and sensors. The team found an atomic-scale break in the material that creates a conductive pathway, allowing for adjustable superhighways for electricity.
Ferroelectric domain engineering of lithium niobate enables control over polarization states, enhancing material versatility for advanced optical and acoustic devices. The review highlights various techniques for engineering domains in lithium niobate, offering a roadmap for future innovations.
A team of researchers at Penn State has developed a novel technique called strain tuning to precisely manipulate the atomic arrangement of materials. This process enables the creation of thin films with improved ferroelectric performance, paving the way for environmentally friendly advancements in consumer electronics and medical devices.
Researchers Bart Besselink, Else Starkenburg and Jagoda Slawinska have been awarded an ERC Consolidator Grant to develop a novel control theory for complex systems. They will also study the early history of our Galaxy using next-generation instruments.
A NRL multi-disciplinary team developed a nonvolatile and reversible procedure to control single photon emission purity in monolayer tungsten disulfide by integrating it with a ferroelectric material. This novel heterostructure introduces a new paradigm for control of quantum emitters.
The US Department of Energy has awarded $975,000 to researchers at the University of Arkansas to study aluminum scandium nitride, a ferroelectric material that could be integrated into existing silicon computing platforms. This research aims to create faster computers with lower energy consumption.
Researchers at Northwestern University developed soft, sustainable electroactive materials using peptides and a snippet of plastic. These materials can store energy or record digital information and have potential applications in low-power electronics, sensors, and medical implants.
A new synthesis method, template synthesis, enables the creation of multilayered perovskites with unique ferroelectric properties. The number of layers affects the material's behavior, switching between conventional and indirect ferroelectricity models.
Researchers developed a non-volatile photonic-electronic memory chip using micro-ring resonator and integrated thin-film ferroelectric material, overcoming dual-mode operation challenge. The chip features low operating voltage, large memory window, high endurance, and multi-level storage capability.
Piezoelectric materials are used in sonar and ultrasound applications, but can deteriorate due to heat and pressure. Researchers have developed a technique to depole and repole these materials at room temperature, allowing for easier repair and paving the way for new ultrasound technologies.
Researchers have discovered aluminum scandium nitride (AlScN) films that remain stable and maintain their ferroelectric properties at temperatures up to 600°C, making them promising candidates for next-generation ferroelectric memory devices. The films exhibit a high remnant polarization value and only a slight increase in coercive fie...
A research team at Pohang University of Science & Technology has developed a new type of hafnia-based ferroelectric memory device that can store 16 levels of data per unit transistor. The device operates at low voltages, high speeds and exhibits stable characteristics.
Researchers at NIMTE have developed a fatigue-free ferroelectric material based on sliding ferroelectricity, eliminating performance degradation and device failure. The bilayer 3R-MoS2 dual-gate device retained its memory performance after 10^6 switching cycles.
Researchers at KAIST successfully clarified the three-dimensional, vortex-shaped polarization distribution inside ferroelectric nanoparticles using atomic electron tomography. This discovery has implications for ultra-high-density memory devices with capacities over 10,000 times greater than existing ones.
Researchers developed nanodots with single ferroelectric and ferromagnetic domains using multiferroic material BFCO, enabling energy-efficient writing and reading operations. The smaller nanodot showed a single-domain structure, while the larger one exhibited multi-domain vortex structures, demonstrating strong magnetoelectric coupling.
Researchers developed a displacement-type ferroelectric material with high dielectric constant by incorporating rubidium ions into perovskite compounds. The material exhibits unique distortions and phase transitions across a broad temperature range.
Researchers have discovered dynamic piezoelectricity in ferroelectric hafnia, which can be changed by electric field cycling. This phenomenon offers new options for microelectronics and information technology. The study also suggests the possibility of an intrinsic non-piezoelectric ferroelectric compound.
Researchers outline new method to stabilize bulk hafnia in metastable ferroelectric and antiferroelectric states, paving the way for non-volatile memory technology. The approach requires less yttrium, improving material quality and purity.
Researchers have developed a new technique to understand the relationship between atomic structure and electric polarization in 2D van der Waals ferroelectric materials. This discovery is expected to revolutionize domain engineering in these materials, positioning them as fundamental building blocks for advanced devices.
New research explores switchable polarization in magnesium-substituted zinc oxide thin films, enabling high-density data storage and ultra-low energy electronics. This breakthrough could pave the way for flexible energy harvesting and wearable devices.
Researchers at Tokyo Institute of Technology have developed a novel ferroelectric semiconductor memory device with a 100 nm channel length, enabling high-density storage and seamless integration with existing semiconductor technologies. The device exhibits typical resistive switching, high on/off ratio, large memory window, and good re...
Researchers at Penn State have developed zentropy theory to predict the behavior of ferroelectric materials. By integrating top-down statistical and bottom-up quantum mechanics, zentropy provides a quantitative prediction that can narrow down possibilities significantly, allowing for more efficient discovery and design.
Scientists from Chiba University developed a new urea-based metal-free system that can improve data storage in devices. The system maintains polarization information upon switching to the crystalline phase, enabling long-term data storage.
A KAUST-led team has developed a proton-mediated approach that produces multiple phase transitions in ferroelectric materials, potentially leading to high-performance memory devices. The method enables the creation of multilevel memory devices with substantial storage capacity, operating below 0.4 volts.
Researchers developed a polarization-angle-resolved Raman microscope to visualize disorder effects on ferroelectric polarization. The study reveals slow response of nanometer-scale electric polarization, enabling significant charge storage and enhanced dielectric properties.
Researchers fabricated 2D perovskite solar cells based on molecular ferroelectrics, achieving the highest open circuit voltage and best efficiency among 2D Ruddlesden-Popper perovskite solar cells. The introduction of ferroelectricity improved charge transport and device performance.
Researchers at Nagoya University have successfully synthesized barium titanate nanosheets with a thickness of 1.8 nanometers, the thinnest freestanding film ever created with ferroelectric properties. This achievement paves the way for the development of smaller and more efficient devices such as memories and capacitors.
A new study reveals how ferroelectric coatings improve all-solid-state lithium batteries by reducing space charge layers and enhancing lithium transportation. The coatings made from guanidinium perchlorate increase battery capacities to near-liquid lithium-ion levels.
Researchers have discovered a novel form of ferroelectricity in a single-element bismuth monolayer that can produce regular and reversible dipole moments. This breakthrough expands the scope for non-volatile memories and electronic sensors.
Scientists have discovered a new topological phase in twisted 2D materials, which could lead to breakthroughs in nanotechnology. The discovery reveals the formation of polar domains that are inherently topological and form objects known as merons and antimerons.
Scientists from the University of Groningen develop complex oxide devices for energy-efficient computing, including magneto-electric spin-orbit and memristive devices. These materials have potential applications in novel computing architectures, such as random number generators.
Researchers discovered a property in single-layer ferroelectric materials that allows them to bend in response to an electrical stimulus. This bending behavior enables the creation of nano-scale switches or motors, which can be controlled using electrical signals.
Researchers have discovered a way to construct and control oxygen-deprived walls in nanoscopically thin materials, which can store data in multiple electronic dialects. These walls can retain their data states even when devices turn off, paving the way for next-gen electronics with enhanced memory capabilities.
Researchers discovered a size threshold beyond which antiferroelectric materials become ferroelectric, losing energy storage advantages. At thicknesses below 40 nm, the material becomes completely ferroelectric, while above 270 nm, ferroelectric regions appear.
Scientists at Tel Aviv University have developed a method to create the thinnest possible ladder steps made of distinct electric potentials, which can be used as independent information units. The discovery enables the creation of novel devices with potential applications in electronics and optomechanics.
Scientists at Tokyo Tech developed an electrostatic actuator capable of generating forces comparable to human muscles, but with lower voltage requirements. The device uses ferroelectric liquid crystals and a 3D-printed electrode to produce contraction and expansion at low voltages.
Researchers at UVA School of Engineering and Applied Science have discovered a way to make a versatile thermal conductor that can be controlled on demand. This advancement has promise for managing heating and cooling in electronic devices, green buildings and space exploration, with potential applications including the Mars Rover.
Physicists at the University of Arkansas have discovered a light-induced mechanism to control ferroelectric polarization in a deterministic manner. By applying ultrafast laser pulses, researchers can manipulate and reverse this polarization.
The team of researchers from Tokyo Institute of Technology developed a generalized spin current theory that accounts for various multiferroic scenarios and provides a transparent toy model for electric polarization. The study demonstrates how the new theory can effectively rationalize the properties of multiferroic materials.
Scientists have developed a method to precisely map the polarization pattern in thin ferroelectric layers, revealing new insights into the physics of these objects. The technique, combined with machine learning, allows for the spatial resolution of ferroelectric domains below 10 nanometers.
Researchers investigated methylammonium lead iodide's ferroelectric nature and photovoltaic properties, finding a freezing temperature of 270 K and a novel phase diagram. The study advances perovskite's potential for energy conversion and storage applications.
A new 2D compound made of antimony and indium selenide exhibits unique properties depending on its polarization by an external electric field. This allows for potential applications in solar energy and quantum computing, with the material being relatively simple to make.
Researchers studied Germanium telluride crystals at the nanoscale to understand its ferroelectric properties and their potential applications in non-volatile spintronic devices. The study found two distinct types of boundaries surrounding ferroelectric nanodomains with sizes between 10 to 100 nanometres.
Researchers have discovered a large family of 2D ferroelectric metals using machine learning, finding 60 stable materials with unique properties. The discovery could lead to new applications in magnetoelectric and magnetostrictive devices.
Researchers have characterized a new type of hybrid improper ferroelectric, Ca3Mn2O7, revealing its ferroelectric and magnetoelectric properties. The material exhibits weak ferromagnetism and strong visible light absorption, paving the way for potential optoelectronic applications.
Researchers at Tokyo Institute of Technology have developed a ultra-thin ferroelectric material called hafnium oxide (HfO2) that exhibits ferroelectricity below 450°C, making it compatible with silicon-based semiconductors and suitable for applications in novel random-access memory and transistors.
Researchers at Northwestern University discovered that layered perovskite ferroelectrics can completely lose their polarization when subjected to too much strain. This unexpected finding opens up new avenues for developing more efficient logic devices and memory elements.
Scientists at Brookhaven National Laboratory discovered nanoscale asymmetries and charge preferences in ferroelectrics, explaining operational limits. These findings open new pathways for ferroelectric technology, despite material fatigue and intrinsic charge preferences.
Researchers at the University of Michigan have designed a ferroelectric material system that spontaneously forms small nano-size spirals, reducing power needed for polarization switching. This breakthrough has the potential to create memory devices with faster write speeds and longer lifetimes than current technologies.