Current Ferroelectric News and Events

Current Ferroelectric News and Events, Ferroelectric News Articles.
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NTUsg researchers develop flexible piezoelectric crystal
A team of researchers led by Nanyang Technological University, Singapore (NTU Singapore) has developed a new material, that when electricity is applied to it, can flex and bend forty times more than other materials in the same class, opening the way to better micro machines. (2021-02-08)

Two-phase material with surprising properties
Some materials can couple electrical and mechanical properties - this can lead to astonishing effects: New materials have been developed, consisting of both crystalline and amorphous regions. In these special polymers, the electro-mechanical coupling suddenly disappers - scientits at TU Wien have found out how. (2021-02-08)

High-speed holographic fluorescence microscopy system with submicron resolution
The National Institute of Information and Communications Technology (NICT), Tohoku University, Toin University of Yokohama, and Japan Science and Technology Agency (JST) have succeeded in developing a scanless high-speed holographic fluorescence microscopy system with submicron resolution for a 3D space. The system is based on digital holography. The developed microscopy system has an algorithm to acquire 3D information of fluorescent objects toward scanless 3D measurement in less than 1 millisecond. (2021-01-29)

CMOS-compatible 3D ferroelectric memory with ultralow power and high speed
POSTECH Professor Jang-Sik Lee's research team develops ferroelectric NAND flash memory. (2021-01-18)

2D compound shows unique versatility
A unique two-dimensional material shows distinct properties on each side, depending on polarization by an external electric field. The pairing of antimony and indium selenide could have applications in solar energy and quantum computing. (2021-01-11)

A polarization-driven guide to making high-performance, versatile solar cells
When solar cells are exposed to sunlight, certain bound ''charge pairs'' are generated in its components, which need to be separated for photocurrent generation. Ferroelectric materials, due to their spontaneous electric polarization, are highly efficient at charge separation but do poorly in light-to-electricity conversion. Now, scientists from Korea have demonstrated using theoretical calculations that antiperovskite oxides, a class of ferroelectric materials, show large absorption of sunlight, making them suitable photoabsorbers for thin film solar cells. (2021-01-04)

Order and disorder in crystalline ice explained
Unlike most other materials, ice at very low temperature is not as ordered as it could be. A new study explains the reasons why this happens and how some of the missing order can be recovered. The scientists have described a relatively obscure and yet fundamental property of very low temperature ice, ferroelectricity. The results, published in PNAS, are likely to extend to ice surfaces and thus be relevant to the agglomeration of ice particles in interstellar space. (2020-12-29)

Seeking answers in ferroelectric patterning
Why do some ferroelectric materials display 'bubble'-shaped patterning, while others display complex, labyrinthine patterns? A FLEET/UNSW study finds the changing patterns in ferroelectric films are driven by non-equilibrium dynamics, with topological defects driving subsequent evolution. Understanding the physics behind ferroelectric material patterns is crucial for designing advanced low-energy ferroelectric electronics, or brain-inspired neuromorphic computing. (2020-12-18)

Natural three-dimensional nonlinear photonic crystal
Nonlinear photonic crystals are playing a prominent role in laser and nonlinear optics. Here, Scientists in China presented a natural potassium-tantalate-niobate (KTN) nonlinear photonic crystal with 3D Rubik's domain structures. The composite rotated domains could be useful for different phase-matching conditions with rich reciprocal vectors along arbitrary direction. KTN crystal breaks strict requirements for incident light and crystal direction in nonlinear optics and trigger newfangled optoelectronic applications for perovskite ferroelectrics. (2020-12-02)

New type of ultrahigh piezoelectricity in hydrogen-bonded ferroelectrics
A new strategy is proposed to generate ultra-high piezoelectric coefficients, and many hydrogen-bonded ferroelectrics (e.g., organic PhMDA) can be ideal candidates owing to the specific features of hydrogen bonding. Their Curie temperature can be approximately doubled upon a tensile strain as low as 2 %, which can be tuned exactly to room-temperature by fixing a strain in one direction, and in another direction, an unprecedented ultra-high piezoelectric coefficient can be obtained. (2020-11-20)

New insights into memristive devices by combining incipient ferroelectrics and graphene
Scientists are working to create neuromorphic computers, with a design based on the human brain. A crucial component is a memristive device, the resistance of which depends on the history of the device - just like the response of our neurons depends on previous input. Materials scientists from the University of Groningen analysed the behaviour of strontium titanium oxide, a platform material for memristor research and used the 2D material graphene to probe it. (2020-11-20)

Germanium telluride's hidden properties at the nanoscale revealed
Germanium Telluride is an interesting candidate material for spintronic devices. In a comprehensive study at BESSY II, a Helmholtz-RSF Joint Research Group has now revealed how the spin texture switches by ferroelectric polarization within individual nanodomains. (2020-11-06)

Reviewing multiferroics for future, low-energy data storage
Big data and exponential demands for computations are driving an unsustainable rise in global ICT energy use. A new UNSW study reviews the use of the 'multiferroic' material bismuth-ferrite, which allows for low-energy switching in data storage devices and could be applied in a future generation of ultra-low-energy electronics. (2020-10-22)

Multi-state data storage leaving binary behind
Electronic data is being produced at a breath-taking rate. Around ten zettabytes (ten trillion gigabytes) of data is stored in global server farms, and that's doubling every two years. With computing already consuming 8% of global electricity, low-energy data-storage is a key priority. Next-generation 'multi-state' memory offers a highly energy efficient, low-cost, fast-access solution: stepping 'beyond binary' to store more data than just zeros and ones. (2020-10-12)

Discovery of large family of two-dimensional ferroelectric metals
Recently, a team from University of Chinese Academy of Sciences, led by Prof. Gang Su, discovered 16 novel ferroelectric metals from a large family (2,964) of 2D bimetal phosphates via data-driven machine learning and high-throughput first-principle calculations. (2020-09-28)

Memory in a metal, enabled by quantum geometry
Berkeley researchers led by Professor Xiang Zhang in collaboration with a Stanford University team invented a new data storage method by making odd numbered layers slide relative to even-number layers in tungsten ditelluride, which is only 3nm thick. The arrangement of these atomic layers represents 0 and 1 for data storage. The researchers make use of quantum geometry to read information out. This material platform works ideally for memory, with independent 'write' and 'read' operation. (2020-09-01)

Toward an ultrahigh energy density capacitor
Researchers at Berkeley Lab and UC Berkeley have demonstrated that a common material can be processed into a top-performing energy storage material. Their discovery could improve the efficiency, reliability, and robustness of personal electronics, wearable technologies, and car audio systems. (2020-08-19)

Novel technology extends battery life, increases upload speed, and reduces data corruption
Researchers from the University of Southern California have created a memory device with improved material and structure and which promises to increase data upload speed, extend smartphone battery life, and reduce data corruption. (2020-07-22)

Hammer-on technique for atomic vibrations in a crystal
Vibrations of atoms in a crystal of the semiconductor gallium arsenide (GaAs) are impulsively shifted to a higher frequency by an optically excited electric current. The related change in the spatial distribution of charge between gallium and arsenic atoms acts back on their motions via electric interactions. (2020-07-14)

Science snapshots July 2020
Berkeley Lab science snapshots July 2020 (2020-07-01)

Understanding of relaxor ferroelectric properties could lead to many advances
A new fundamental understanding of polymeric relaxor ferroelectric behavior could lead to advances in flexible electronics, actuators and transducers, energy storage, piezoelectric sensors and electrocaloric cooling, according to a team of researchers at Penn State and North Carolina State. (2020-06-29)

After a century of searching, scientists find new liquid phase
Researchers at the University of Colorado Boulder's Soft Materials Research Center (SMRC) have discovered an elusive phase of matter, first proposed more than 100 years ago and sought after ever since. (2020-06-10)

Novel insight reveals topological tangle in unexpected corner of the universe
In a recent theoretical study, scientists discovered the presence of the Hopfion topological structure in nano-sized particles of ferroelectrics -- materials with promising applications in microelectronics and information technology. (2020-05-26)

Pushing periodic disorder induced phase-matching into deep-ultraviolet spectral region
Phase matching condition is the key criteria for the efficient nonlinear frequency conversion. Here, Scientists in China employed an additional periodic phase (APP) technique to meet the phase-matching condition in quartz crystal and experimentally demonstrated the efficient nonlinear frequency conversion from visible to deep-ultraviolet spectral region. The APP theory and generated visible to deep-ultraviolet radiation would revolutionize the next-generation nonlinear photonics and their further applications. (2020-03-23)

Unique material could unlock new functionality in semiconductors
In an article published today in Science Advances, Rensselaer Polytechnic Institute researchers detailed how they designed and synthesized a unique material with controllable capabilities that make it very promising for future electronics. (2020-02-28)

Cold sintering produces capacitor material at record low temperatures
Barium titanate is an important electroceramic material used in trillions of capacitors each year and found in most electronics. Penn State researchers have produced the material at record low temperatures, and the discovery could lead to more energy efficient manufacturing. (2020-02-26)

Simple self-charging battery offers power solutions for devices
A new type of battery combines negative capacitance and negative resistance within the same cell, allowing the cell to self-charge without losing energy, which has important implications for long-term storage and improved output power for batteries. In Applied Physics Reviews, researchers at the University of Porto and the University of Texas at Austin report making their very simple battery with two different metals, as electrodes and a lithium or sodium glass electrolyte between them. (2020-02-25)

Controllable functional ferroelectric domain walls under piezoresponse microscope
Although ferroelectric bulk materials have excellent photoelectric, piezoelectric and dielectric properties, they could hardly meet the increasing need for integrated, micro-sized and wearable devices. As a functional two-dimensional structure, possessing distinctive electric, magnetic, optic and mechanical properties, ferroelectric domain walls have attracted widespread attention in recent years, yet the lack of maneuverability holds off their potential application. Scientists from China and America study the domain wall dynamics statistically and manipulate them successfully. (2020-02-06)

Physicists find evidence of previously unseen transition in ferroelectrics
Proposed a century ago, inverse transitions seem to contradict the fundamental law that disorder increases with temperature. They have been found in superconductors and liquid crystals, but not yet in ferroelectric materials, which have a variety of uses in electronics and data storage. (2020-02-06)

Physicist obtain atomically thin molybdenum disulfide films on large-area substrates
Researchers have managed to grow atomically thin films of molybdenum disulfide spanning up to several tens of square centimeters. Thus, the noticeable remnant polarization value and a good switching endurance were obtained directly in contact with MoS2 film, allowing to conclude the possibility of the memory MoS2-based FeFET concept realization. (2020-01-22)

Designer-defect clamping of ferroelectric domain walls for more-stable nanoelectronics
Engineered defects in ferroelectric materials provides key to improved polarisation stability, a significant step forward for domain-wall nanoelectronics in data storage. Researchers achieved stability greater than one year (a 2000% improvement). (2020-01-21)

Smart materials are becoming smarter
Composites are a new type of materials that consist of heterogeneous components (metals, ceramics, glass, plastic, carbon, etc.) and combine their properties. To create such a material, a filler with certain stability and rigidity is placed into a flexible matrix. Various compositions and matrix-filler ratios create a wide range of materials with given sets of characteristics. (2020-01-20)

Transparency discovered in crystals with ultrahigh piezoelectricity
Use of an AC rather than a DC electric field can improve the piezoelectric response of a crystal. Now, an international team of researchers say that cycles of AC fields also make the internal crystal domains in some materials bigger and the crystal transparent. (2020-01-15)

Exploring the 'dark side' of a single-crystal complex oxide thin film
A new study offers a nanoscopic view of complex oxides, which have great potential for advanced microelectronics. (2020-01-06)

MIPT researchers close in on new nonvolatile memory
Researchers from MIPT, along with their colleagues from Germany and the U.S., have achieved a breakthrough on the way to new types of nonvolatile memory devices. The team came up with a unique method for measuring the electric potential distribution across a ferroelectric capacitor -- the device underlying the memory of the future, which would be orders of magnitude faster than the current flash and solid-state drives, withstanding 1 million times as many rewrite cycles. (2019-12-17)

Reorganizing a computer chip: Transistors can now both process and store information
Researchers have created a more feasible way to combine transistors and memory on a chip, potentially bringing faster computing. (2019-12-09)

A four-way switch promises greater tunability of layered materials
A scientific team from the Department of Energy's Oak Ridge National Laboratory and Vanderbilt University has made the first experimental observation of a material phase that had been predicted but never seen. The newly discovered phase couples with a known phase to enable unique control over material properties -- an advance that paves the way to eventual manipulation of electrical conduction in two-dimensional materials such as graphene. (2019-11-18)

Discovery in ferroelectric material reveals unique property, application potential
A discovery from a team of physicists and other researchers is breaking new ground in the study of ferroelectricity, a characteristic of certain dielectric materials that are used in high-technology applications. The findings appear today in the journal Nature Materials. (2019-11-18)

Perovskite solar cells: Possible aspects of high efficiency uncovered
Using crystallographic analyses at the Diamond Light Source (DLS) synchrotron in the United Kingdom, an HZB team has demonstrated that hybrid halide perovskites crystallise without inversion centre. Interactions between the organic molecules and adjacent iodine atoms can lead to the formation of ferroelectric domains, which, indirectly, can result in higher solar-cell efficiencies. The formation of these ferroelectric domains cannot occur in purely inorganic perovskites. (2019-11-13)

Neural network technique identifies mechanisms of ferroelectric switching
AI reveals domain-geometry-driven differences in ferroelectric switching, important for next-generation computing; approach could be applied to electron microscopy, agriculture, astronomy and other systems mapped through hyperspectral imaging (2019-10-22)

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