Karl A. Gschneidner and fellow scientists at the U.S. Department of Energy’s Ames Laboratory have created a new magnetic alloy that is an alternative to traditional rare-earth permanent magnets.
The new alloy—a potential replacement for high-performance permanent magnets found in automobile engines and wind turbines–eliminates the use of one of the scarcest and costliest rare earth elements, dysprosium, and instead uses cerium, the most abundant rare earth.
The result, an alloy of neodymium, iron and boron co-doped with cerium and cobalt, is a less expensive material with properties that are competitive with traditional sintered magnets containing dysprosium.
Experiments performed at Ames Laboratory by post-doctoral researcher Arjun Pathak, and Mahmud Khan (now at Miami University) demonstrated that the cerium-containing alloy’s intrinsic coercivity—the ability of a magnetic material to resist demagnetization—far exceeds that of dysprosium-containing magnets at high temperatures. The materials are at least 20 to 40 percent cheaper than the dysprosium-containing magnets.
“This is quite exciting result; we found that this material works better than anything out there at temperatures above 150° C,” said Gschneidner. “It’s an important consideration for high-temperature applications.”
Previous attempts to use cerium in rare-earth magnets failed because it reduces the Curie temperature—the temperature above which an alloy loses its permanent magnet properties. But the research team discovered that co-doping with cobalt allowed them to substitute cerium for dysprosium without losing desired magnetic properties.
Finding a comparable substitute material is key to reducing manufacturing reliance on dysprosium; the current demand for it far outpaces mining and recycling sources for it.
Read more: Ames Laboratory scientists create cheaper magnetic material for cars, wind turbines
The Latest on: Magnetic material
[google_news title=”” keyword=”Magnetic material” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Magnetic material
- The Best Magnetic Knife Blocks, According to Chefs and Designerson May 8, 2024 at 6:54 pm
Any avid cook knows the best kitchen is utilitarian at its core and beautiful at its best. Magnetic knife blocks, which combine functionality and design, are becoming standard for professional chefs, ...
- MAGNETIC NORTH ACQUISITION CORP. ANNOUNCES ISSUANCE OF MANAGEMENT CEASE TRADE ORDER BY ASCon May 8, 2024 at 2:35 pm
Magnetic North Acquisition Corp. (TSXV: MNC) (TSXV: MNC.PR.A) ("Magnetic North" or the "Company") announces that its principal regulator, the Alberta Securities Commission (the "ASC"), has accepted ...
- Final Launches Groundbreaking D7000 Planar-Magnetic Headphoneson May 8, 2024 at 5:01 am
Final, the high-end Japanese headphone brand, has just upped the stakes in the planar-magnetic market but introducing its most ambitious design yet.
- What is magnetic resonance imaging? | Explainedon May 6, 2024 at 2:45 pm
Generating a magnetic field of strength 1 tesla or more — as the main magnet does — is no mean feat. To do so, a heavy current is passed through coils of wire made of a superconducting material. When ...
- Electric Vehicles and Renewables Fuel Soft Magnetic Composites Industry Boom: Market Value to USD 1,08,392.0 Million by 2033on May 6, 2024 at 3:33 am
According to a Future Market Insights (FMI) report, the global soft magnetic composite market value is forecast to increase from USD 44,459.0 Million in 2023 to USD 108,392.0 Million by 2033. Over the ...
- Bioinspired magnetic soft actuators rapidly deform using bone-in-flesh constructson May 1, 2024 at 5:00 pm
As an alternative, some researchers incorporated prefabricated rigid magnetic components directly into soft actuators. But without a general design approach to optimize the integration of hard and ...
- Researchers unlock potential of 2D magnetic devices for future computingon May 1, 2024 at 12:06 pm
Imagine a future where computers can learn and make decisions in ways that mimic human thinking, but at a speed and efficiency that are orders of magnitude greater than the current capability of ...
- Laser light makes a material magneticon April 26, 2024 at 6:59 am
By applying laser light that is both circularly polarized – that is, its polarization traces out a corkscrew-like shape as it propagates – and resonant with the frequency of atomic oscillations within ...
- Newfound ‘altermagnets’ shatter the magnetic status quoon April 25, 2024 at 3:00 am
The newly discovered type of magnetic material could improve existing tech, including making better and faster hard drives.
- The Magnetic Fields’ Stephin Merritt: ‘I own up to using the word tranny when it was acceptable’on April 25, 2024 at 1:53 am
Before becoming a cult indie-rock star with his band The Magnetic Fields, songwriter Stephin Merritt ... his relationship with the material has been complicated by life and its many challenges. One of ...
via Bing News