Orientation of Magnetized MnBi in a Strong Static Magnetic Field
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Solidification of Bi-4.5 wt pct Mn alloy was investigated in the presence and absence of a strong static magnetic field (SSMF). A cooling rate (R) of 60 K/min caused MnBi to orient with the SSMF, owing to the force moment and attractive force. The attractive force and magnetic gradient force induced formation of multilayered MnBi when R was 5 K/min. The magnetic gradient force was damped when R was 60 K/min. Low cooling rates favored the aggregation process.
The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Grant Nos. 51704193 and U1732276), a General Financial Grant from the China Postdoctoral Science Foundation (Grant No. 2017M621431), the Science and Technology Commission of Shanghai Municipality (Key Project No. 13JC1402500), the Key Project from the Science and Technology Commission of Shanghai Municipality (Key Project No. 15520711000), and the SME Technology Innovation Fund (Key Project No. 12CC26213202452). We thank Andrew Jackson, Ph.D., Edanz Group (www.edanzediting.com/ac), for editing a draft of this manuscript.
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