via www.nist.gov
Technologies from wind turbines to electric vehicles rely on critical materials called rare-earth elements.
These elements, though often abundant, can be difficult and increasingly costly to come by. Now, scientists looking for alternatives have reported in ACS’ journal Chemistry of Materials a new way to make nanoparticles that could replace some rare-earth materials and help ensure the continued supply of products people have come to depend on.
Rare-earth elements have unique characteristics that make them very useful. For example, the world’s strongest magnets are made with neodymium. A little too powerful for your refrigerator, these magnets are incorporated into computer disk drives, power windows and wind turbines. But rare earths are challenging to mine and process, and prices can rise quickly in a short period of time. Given the increasing demand for rare earths, Alberto López-Ortega, Claudio Sangregorio and colleagues set out to find substitutes for use in strong magnets.
The researchers used a mixed iron-cobalt oleate complex in a one-step synthetic approach to produce magnetic core-shell nanoparticles. The resulting materials showed strong magnetic properties and energy-storing capabilities. Their approach could signal an efficient new strategy toward replacing rare earths in permanent magnets and keeping costs stable, the researchers say.
The Latest on: Magnetic core-shell nanoparticles
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The Latest on: Magnetic core-shell nanoparticles
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- Nanostructures and Nanotechnologyon April 9, 2021 at 10:56 am
Recent advances in gold-metal oxide core-shell nanoparticles: Synthesis, characterization, and their application for heterogeneous catalysis. Frontiers of Chemical Science and Engineering, Vol. 10, ...
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- Nanomedicine Strategies for Hematological Malignancies: What Is Next?on April 4, 2021 at 5:01 pm
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- Nanoparticle-laden droplets of liquid crystals: Interactive morphogenesis and dynamic assemblyon April 4, 2021 at 5:01 pm
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- Solution Synthesis of Inorganic Films and Nanostructured Materialson April 2, 2021 at 1:54 am
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We demonstrate a feasible solution for producing structural colors inspired by bird feathers. We have designed core-shell nanoparticles using high–refractive index (RI) (~1.74) melanin cores and ...
- Magnetic Resonance Laboratoryon October 28, 2019 at 5:20 pm
Magnetic Resonance Imaging (MRI) is a noninvasive experimental technique which has found broad application in clinical medicine and is a maturing method for studies in engineering and physics. Our ...
- 2015 Publicationson January 12, 2019 at 2:08 pm
Mechanism of Multivalent Nanoparticle Encounter with HIV-1 for Potency Enhancement ... Dan, N. Compound release from core-shell carriers triggered by oscillating fields: Monte Carlo simulations.
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