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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Magnetics and the Critical Materials Challenge: An FMD Symposium Honoring Matthew J. Kramer
Presentation Title Critical Materials Challenges in ThMn12-type Hard Magnetic Alloys for Permanent Magnets
Author(s) Daniel Salazar
On-Site Speaker (Planned) Daniel Salazar
Abstract Scope The great performance of commercial high-energy permanent magnets is strongly dependent on the use of critical and strategic raw materials, such as Dy and Tb, which provide enhanced coercivity and increased thermal stability. To overcome this dependency on scarce materials, worldwide efforts to develop rare-earth lean/free permanent magnets are promoted. ThMn12-type hard magnetic phases are promising candidates due to their high saturation magnetization, Curie point and anisotropy field; these properties are enhanced by the addition of light elements (H, N) at the interstitial sites of the 1:12 crystal structure or by Sm-substitution at the Th site. Progress in the development of coercivity on samples with high anisotropy has been done using different processing methods and the intrinsic properties of the hard-magnetic phases were significantly improved by the proposed techniques. The maximum coercivity reached in these compounds is above 0.6T and 1T in nitride Nd-based and Sm-based 1:12 alloys, respectively.
Proceedings Inclusion? Planned:


A Solution to the Permalloy Problem
Challenges in Affordable, Reliable Permanent Magnets
Controlling First-order Magnetic Phase Transitions in Rare-earth Intermetallics
Critical Materials Challenges in ThMn12-type Hard Magnetic Alloys for Permanent Magnets
Developing Substitutes for Magnetic Alloys
Far-from-equilibrium Materials Processing
From High-throughput Synchrotron Diffraction to Closed-loop Autonomous Materials Discovery
Giant Saturation Magnetization of Fe-based Soft Magnetic Amorphous Alloy by Introducing Nitrogen
HDDR Treatment on Nd2Fe14B-based Magnets in the Presence of an Applied Magnetic Field
Iron Nitride: a Non-rare-earth Containing Permanent Magnet
Like Poles Attraction and Unlike Poles Repulsion - Science Behind the Mystery
Magnetoelastic Interactions Reduce Hysteresis in Soft Magnets
Mechanically Strengthened Heterogeneous Sm-Co Sintered Magnets
Microstructural Evolutions, Phase Transformations and Hard Magnetic Properties in Polycrystalline Ce-Co-Fe-Cu Alloys
Nanocomposite Soft Magnetics: Applications, State-of-art, and Emerging Trends
Structure and Magnetic Properties of Galfenol Nanocomposite Alloys
Synthesis and Characterization of Rare-earth-based Metallic Glasses
Synthesis and Stabilization of Magnetic Nanoparticles of Rare-earth Metal Alloys
Utilizing High Energy X-rays to Perform In Situ observations of Alnico Spinodal Evolution

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