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Scientists Discover a New Kind of Magnet (ieee.org)
Wave723 shares a report from IEEE Spectrum: A new kind of magnet, theorized for decades, may now have been experimentally proven to exist. And it could eventually lead to better data storage devices. In a normal magnet, the magnetic moments of individual grains align with each other to generate a magnetic field. In contrast, in the new "singlet-based" magnet, magnetic moments are temporary in nature, popping in and out of existence. Although a singlet-based magnet's field is unstable, the fact that such magnets can more easily transition between magnetic and non-magnetic states can make them well-suited for data storage application. Specifically, they could operate more quickly and with less power than conventional devices, says Andrew Wray, a materials physicist at New York University who led the research. Now, Wray and his colleagues have discovered the first example of a singlet-based magnet that is robust -- one made from uranium antimonide (USb2). "It ends up taking very little energy to create spin excitons for uranium antimonide," Wray says. "This is essential for the singlet-based magnet, because if it took a lot of energy, then there wouldn't be enough spin excitons to condense, stabilize one another, and give you a magnet." The research has been published in the journal Nature Communications.
How do they work?
TL;DR - Not a monopole (Sadly)
So....does this advancements in elector motors?! Other than storage, what other practical application would this serve?
Life is not for the lazy.
Insane Clown Posse is really going to be confused now.
The Limitations of USb2 will be its 480mb/s transfer rate. And how I keep plugging it in the wrong way. USB-C is way better solution in both regards. :X
How can this lead to better storage devices? The only thing I can think of is another way to coat platters in a spinning physical HD. The last time I checked spinning HD where on the way out.
I read at +2. If your post doesn't reach that level I will not see or respond to it.
So our hard drives will be coated with uranium antimonide? That sounds like fun.
We have finally found a place to dump all the nuclear waste! It's going to our next gen data centers!
I see a glowing future ahead of us.
We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
I can't wait for USB sticks to come in 12" thick lead-lined concrete cases with free shipping from Alibaba.
Let's see the delivery guy try throwing that package across the front yard.
High temperature singlet-based magnetism from Hund’s rule correlations
Not paywalled. Thank you very much, Nature.
When all you have is a hammer, every problem starts to look like a thumb.
If the magnetism goes away quickly, the material wouldn't be suitable for mass storage such as a harddisk of magnetic tape. However, then it could be suitable as a core of a coil, the same as a coil with a ferrite core.
Is this material diamagnetic, paramagnetic of ferromagnetic?
The half-life of U-238 is roughly the same as the age of the Earth. I think we can handle that.
Given that someone made the device this AC comment is idiotic. Of course it has been touched by human hands, it did not materialize out of thin air. The people who touched it before knew what the heck they were doing, wore gloves, if that was necessary, etc.
Starships were meant to fly, Hands up and touch the sky - Nicky Minaj
I can't wait for USB sticks to come in 12" thick lead-lined concrete cases with free shipping from Alibaba.
Let's see the delivery guy try throwing that package across the front yard.
Says someone that knows nothing of radiation. Uranium produces only alpha particles which would be easily stopped with a thin plastic case....
Says someone who know way less about radiation than they think. The amount of uranium that would used in a magnetic storage device would be a tiny, insignificant amount true, but uranium absolutely emits gamma rays (the most common is an energetic 2.5127 MeV). Not only that, but the two immediate daughter products of U-238 decay (Th-234, Pa-234) have very short half-lives and also emit gamma rays (along with their beta emissions).
Starships were meant to fly, Hands up and touch the sky - Nicky Minaj
I suspect the hard drives based on this would be 10x faster if they used USb3 instead of USb2.
in the new "singlet-based" magnet
They're hardly new, singlets have been around for years.