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- W2560065618 abstract "Conventional Pr-Fe-B magnets for low temperature applications frequently suffer the risk of partial demagnetization when handled at room temperature (RT). To increase the coercivity of Pr-Fe-B magnets at RT without sacrificing the remanent magnetic polarization, a grain-boundary-diffusion (GBD) process using Tb can be applied which allows the manufacturing of Pr-Fe-B magnets with H cJ = 1800 kA/m and B r = 1.41 T at 293 K and H cJ = 6300 kA/m and B r = 1.62 T at 77 K. The temperature dependence of the coercivity increase induced by the GBD correlates well with the different anisotropy fields of Pr 2Fe 14 B and Tb 2Fe 14 B supporting the model of higher nucleation fields due to Tb-rich high anisotropy (Pr,Tb) 2Fe 14 B layers along the grain- boundaries. The coercivtiy gradients induced by the GBD process have been determined and an increase in H cJ has been observed up to a depth of ~4 mm." @default.
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- W2560065618 date "2014-01-01" @default.
- W2560065618 modified "2023-09-27" @default.
- W2560065618 title "Grain-Boundary Diffusion of Pr-Fe-B Magnets for Cryogenic Applications" @default.
- W2560065618 hasPublicationYear "2014" @default.
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