Articles tagged with Ferromagnetism
Researchers at UIUC use 4D-STEM to resolve magnetic behavior on angstrom scale, breaking record for atomic resolution. They achieve this by combining electron microscopy with simulations using software package Magnstem.
A recent project at KAUST has reported multifunctional logic gates that offer users a range of hardware security advantages, including tamper protection and watermarking. The gates use spintronic devices called magnetic tunnel junctions, which can be easily switchable and obscure their layout, making them hard to reverse engineer.
A research team has made critical achievements in antiferromagnetic spintronics, revealing emerging frontier distinguished by coherent spin dynamics. Key findings include spin generation and transport, electrically driven spin rotation, and ultrafast spintronic effects.
Researchers at ct.qmat created ferromagnetic topological insulator MnBi6Te10 with stronger magnetic field than its antiferromagnetic predecessor. The material's surface exhibits ferromagnetic properties, enabling lossless current conduction.
Researchers developed a method to efficiently couple terahertz waves with spin waves, clarifying fundamental mechanisms previously thought impossible. This breakthrough enables the development of novel spin-based technologies for data processing.
Researchers at MIT have discovered a way to switch graphene's superconductivity on and off with short electric pulses, opening up new possibilities for ultrafast brain-inspired electronics. This discovery could lead to energy-efficient superconducting transistors for neuromorphic devices.
M.A.R.V.E.L.'s magnetic soles made of Electro-Permanent Magnet (EPM) and Magneto-Rheological Elastomer (MRE) enable fast movement on uneven surfaces. The robot can climb at speeds of up to 70 cm/s on walls and 50 cm/s on ceilings, making it the world's fastest walking climbing robot.
A team of researchers has developed a prototype of a quantum microscope that can see electric currents, detect fluctuating magnetic fields, and even see single molecules on a surface. The microscope uses atomic impurities and van der Waals materials to achieve high resolution sensitivity and simultaneous imaging of magnetic fields and ...
Researchers at Tokyo Institute of Technology have developed a novel nanowire fabrication technique, allowing for the direct creation of ultrafine L10-ordered CoPt nanowires with high coercivity on silicon substrates. The technique enables significant improvements in spintronic device fabrication.
Scientists have developed a magnetized state in monolayer tungsten ditelluride, allowing for controlled electron flow and potential applications in non-volatile memory chips. The discovery enables the creation of smaller, more energy-efficient devices that consume less power and dissipate less energy.
Researchers create a quantum anomalous Hall insulator by stacking a ferromagnetic material between two 2D topological insulators, enabling room-temperature lossless transport. The new architecture could lead to ultra-low energy future electronics or topological photovoltaics.
Physicists at Rice University have found telltale signs of antiferromagnetic spin fluctuations coupled to superconductivity in uranium ditelluride, a rare material promising fault-free quantum computing. The discovery upends the leading explanation of how this state of matter arises in the material.
A University of Wollongong team has combined two doping elements to achieve new efficiencies in the topological insulator Bi2Se3. The resulting crystals show clear ferromagnetic ordering, a large band gap, high electronic mobility, and the opening of a surface state gap.
Theorists have observed a rare phenomenon called the quantum anomalous Hall effect in bilayer graphene, a naturally occurring, two-atom thin layer of carbon atoms. The researchers found eight different ground states exhibiting ferromagnetism and ferroelectricity simultaneously.
MnBi2Te4's unique properties make it suitable for ultra-low-energy electronics and observing exotic topological phenomena. The material is metallic along its one-dimensional edges while electrically insulating in its interior.
Researchers at Osaka City University have successfully stored electricity using ferromagnetic resonance (FMR) in ultra-thin magnetic films. The team found that two alloys, Ni80Fe20 and Co50Fe50, generated varying amounts of electricity under FMR, with Co50Fe50 showing a steady increase in energy storage over time.
Scientists at Skoltech and KTH Royal Institute of Technology predict the existence of antichiral ferromagnetism, a nontrivial property of some magnetic crystals. This phenomenon could lead to unique magnetic domains and skyrmions, distinct from conventional chiral textures.
Scientists have created 2D CaCl crystals that display unexpected metallicity and room-temperature ferromagnetism. These crystals exhibit piezoelectricity-like behavior and have potential applications in transistors and nanotransistor devices.
Scientists from QuTech have observed experimental signatures of Nagaoka ferromagnetism using an engineered quantum system. This phenomenon was predicted by Japanese physicist Yosuke Nagaoka in 1966 and has never been observed naturally. The researchers created a two-dimensional lattice of four quantum dots, which allowed them to trap t...
Researchers have found that non-encapsulated few-layer CrI3 has a rhombohedral structure at low temperatures, contradicting previous findings. The study also shows spin-phonon coupling occurring below 60K, which affects the Hamiltonian of Raman modes and has potential implications for novel spintronic devices
Researchers predict a new type of multiferroic material that combines ferromagnetism and electric polarization, potentially leading to efficient magnetic reading and writing. The study suggests that diverse magnetoelectric couplings can be achieved in thin layers, making it a promising direction for practical applications.
A new layered ferromagnetic semiconductor material has been discovered, which holds great promise for electronic technologies. The material, made of vanadium and iodine, exhibits spin-dependent electronic properties, allowing for additional control over currents flowing through it.
Researchers at UNIST have synthesized a triazine network structure from tetracyanoquinodimethane (TCNQ) monomer, demonstrating room-temperature ferromagnetism. The material exhibits stable neutral radicals and unpaired electrons, leading to ferromagnetic ordering.
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 have discovered a mechanism to develop magnetic storage media with lower energy expenditure by combining ferromagnetic and antiferromagnetic spins. Antiferromagnetic dysprosium can be toggled using short laser pulses, requiring less energy than conventional magnets.
Researchers at Berkeley Lab have discovered a new atomically layered, thin magnet in a two-dimensional material, revealing intrinsic ferromagnetism and unprecedented control over ferromagnetic behavior. The discovery has major implications for nanoscale memory, spintronic devices, and magnetic sensors.
Scientists have developed a new material that exhibits both ferroelectricity and ferromagnetism, promising improved computer memory. The material, BiFe1-xCoxO3 (BFCO), can store information in a low-power consumption manner.
Researchers introduce two approaches to stabilize itinerant ferromagnetic state in quantum gases, allowing for experimental detection and study of this elusive physical state. By imposing moderate optical lattices or studying cloud evolution, the methods reduce three-body recombination rates, enabling longer-lived ferromagnetic domains.
Researchers have discovered a new ferromagnetic superconductor, CsEuFe4As4, where both bulk superconductivity and full ferromagnetism are realized simultaneously. The material exhibits robust SC and FM, with the ferromagnetic ordering demonstrated by field-dependent magnetization.
Researchers at Tohoku University have discovered the origin and mechanism of ferromagnetism in Mn-doped GaAs, accelerating spintronic element development. The study reveals that doped Mn atoms extract electrons from As atoms, causing ferromagnetism.
Ferromagnetic semiconductors have overcome a longstanding physical constraint by growing iron-doped semiconductors at room temperature. This breakthrough enables new opportunities for utilizing spin degrees of freedom in semiconductor devices, such as spin transistors.
Researchers have revealed the mechanism behind the ferromagnetic properties of Cr-doped (Sb, Bi)2Te3 thin films, enabling electric current generation at room temperature without energy consumption. This breakthrough could lead to novel materials that operate efficiently in future devices.
Researchers have found ferromagnetic order with Tc up to 230 K in a new DMS system, overcoming the obstacle of lower Tc compared to classical systems. The system exhibits spontaneous magnetization and clear signatures of ferromagnetism, including negative magnetoresistance.
Researchers used HARPES to investigate the bulk electronic structure of GaMnAs, finding evidence that two prevailing mechanisms co-exist to give rise to ferromagnetism. This breakthrough provides a better fundamental understanding of electronic interactions in dilute magnetic semiconductors.
Scientists from Helmholtz-Zentrum Dresden-Rossendorf and TU Dresden created a unique material, Bi3Ni, with nanometer-scale size, which exhibits both ferromagnetism and superconductivity. This phenomenon is rare and not yet fully understood, with the possibility of featuring a special type of superconductivity.
Rice physicists Qimiao Si and Seiji Yamamoto create a theoretical model to understand the quantum quirks of high-temperature superconductors and ferromagnetism. Their model predicts the origins of metallic ferromagnetism, providing a rigorous answer to a long-standing question in condensed matter physics.
Researchers at UCLA have created a new material combining quantum dots and silicon, enabling electronic devices to operate without passing an electric current. This breakthrough could lead to the development of non-volatile electronics with much lower power consumption.
Researchers observed magnetic behavior in an atomic gas, cooled to near absolute zero, and found it became ferromagnetic when repulsive forces were increased. The discovery may change textbooks on magnetism, showing that a gas of fermions can exhibit magnetic properties without a crystalline structure.
An international team observed ferromagnetism in one-dimensional cobalt chains, which exhibit both short- and long-range magnetic order. The chains' localized orbital magnetic moments are much larger than those in thin films or bulk crystals, opening up new possibilities for nanoscale magnetic structures.
Ralph V. Chamberlin has successfully extended the mean-field theory of ferromagnetism to describe the behavior of ferromagnetic materials at lower temperatures, eliminating the need for an alternative theory. This breakthrough allows for the accurate description of ferromagnets in a wider range of temperatures.
Researchers from Arizona State University, IBM Almaden Research Labs, and Lawrence Berkeley Laboratory have confirmed the alignment between electron spins in ferromagnets and anti-ferromagnets is colinear. This finding improves understanding of exchange bias, a phenomenon useful for controlling magnetization in magnetic disk storage.
Direct images of aligned magnetic domains on both sides of an interface reveal the phenomenon of 'pinning' in layered magnetic structures. The researchers used photoemission electron microscopy to distinguish between layers with different chemical elements, demonstrating that exchange bias is an intrinsic property of the interface.