We are sharing two candidate magnets for next-generation computer memory, found by a team of Claude Opus 5.5 agents. Both are predicted to have zero net magnetism yet still sort electrons by spin: one a new compound we designed, the other a material first made in 1999. We're…
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How the discovery of altermagnets could change physics and computing
ferromagnets
Spin makes an electron behave like a little rotating ball of charge, which furnishes it with a magnetic field similar to that of a tiny bar magnet.
For centuries, explorers sought to map magnetic and true north and to identify the source of Earth's magnetic pull.
Development could have implications for power transmission, nuclear fusion and superconducting magnetic levitation.
MP Materials begins manufacturing rare earth magnets, including Neodymium magnets, in the U.S. This marks a significant step for the domestic production of permanent magnets, crucial for industries like EVs and defense. Despite challenges, this move aims to reduce reliance on…
MIT physicists created a long-lasting magnetic state in a material, using only light. The results provide a new way to control and switch antiferromagnetic materials, which are of interest for their potential to advance information processing and memory chip technology.
A new technical paper titled “Integrated non-reciprocal magneto-optics with ultra-high endurance for photonic in-memory computing” was published by researchers at UC Santa Barbara, University of Cagliari, University of Pittsburgh, AIST and Tokyo Institute of Technology. Abstract…
In this article, we learn about core saturation and why it should be avoided in most applications. We then examine how different ways of defining permeability can help us predict the saturation flux density of a magnetic core.
The hysteresis effect is one of the main sources of loss in ferromagnetic materials. In this article, we learn to calculate the hysteresis loss of a magnetic core and work through some example problems.
In this article, we use the concept of magnetic field energy to explore the relationship between a core's hysteresis loss and its B-H curve.
In this article, we explore the effect of dimensional resonance on the magnetic field distribution in high-frequency ferrite cores.
This article examines three different types of magnetic materials and how they react to an external magnetic field.
This article discusses the following basic concepts related to magnetic materials: the magnetic dipole moment, magnetization vectors, susceptibility, and permeability.
Cow magnets are very popular with farmers, ranchers, and veterinarians since they are a well-known method of preventing hardware disease in cattle.
Electron tornadoes that mimic “magnetic monopoles” emerge from specks of rust
Altermagnets, theorised to exist but never before seen, have been measured for the first time and they could help us make new types of magnetic computers
DARPA, the US Defense Advanced Research Projects Agency, is now working on developing a magnet-driven silent water propulsion system - the magnetohydrodynamic (MHD) drive. The primary reason is to develop silent military naval craft. Imagine a nuclear submarine with an MHD…
Masato Sagawa and John Croat explain how they invented the neodymium-iron-boron permanent magnet
Researchers from the Carnegie Mellon University have developed soft magnetic materials that promise to make electric motors up to four times lighter.
Electric machineries are based on the basic principles of electromechanical conversion, which use either the electrostatic or the electromagnetic principle. This technical article deals with the magnetic circuit theory for the conversion of one form of energy to another.