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Effects of Indium on PrCo _{5} Magnets Prepared by Powder Sintering and Hot-Deformation of Nanocrystalline Precursors

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4 Author(s)
Gabay, Alexander M. ; Dept. of Phys. & Astron., Univ. of Delaware, Newark, DE, USA ; Marinescu, M. ; Liu, Jinfang ; Hadjipanayis, George C.

Small additions of indium are found to introduce low-melting-temperature phases in PrCo5 -based magnets. The sintering temperature of anisotropic powders with 0.5 at.% indium can be reduced from 1100degC to 950degC-975degC, resulting in increase of remanent magnetization of the optimally heat-treated sintered magnet from 9 to 10.7 kG with a simultaneous increase of the intrinsic coercivity from 6.7 to 9.1 kOe. In the magnets prepared by hot deformation of nanocrystalline precursors, the indium-induced grain-boundary phase(s) strongly promotes uniaxial alignment of the [100] direction rather than the desired [001] easy magnetization direction.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 10 )