Magnetic properties of doped Mn-Ga alloys made by mechanical milling and heat treatment
Source abstract
Abstract
Mn-Ga alloys have shown hard magnetic properties, even though these alloys contain no rare-earth metals. However, much work is needed before rare-earth magnets can be replaced. We have examined the magnetic properties of bulk alloys made with partial replacement of both the Mn and Ga elements in the Mn0.8Ga0.2 system. Bulk samples of Mn-Ga-Bi, Mn-Ga-Al, Mn-Fe-Ga and Mn-(FeB)-Ga alloys were fabricated and studied using mechanically milling and heat treatments while altering the atomic percentage of the third element between 2.5 and 20 at%. The ternary alloy exhibits all hard magnetic properties at room temperature with large coercivity. Annealed Mn-Ga-X bulk composites exhibit high coercivities up to 16.6 kOe and remanence up to 9.8 emu/g, that is increased by 115% over the binary system.
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Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic Properties and Applications · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Florida State University 1 Department of Material Science and Engineering, , Tallahassee, FL 32304, USA
National High Magnetic Field Laboratory 2 , Tallahassee, FL 32310, USA
Florida Agricultural and Mechanical University-Florida State University 3 Department of Chemical Engineering, , Tallahassee, FL 32304, USA
Funding
National Science Foundation · U.S. Department of Energy
References (17)
Show source-provided references
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