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NdFeB bulk magnets were synthesized by spark plasma sintering (SPS) using the precursors of melt spun nanocrystalline Nd10.15Pr1.86Fe80.41Al1.67B5.91 ribbons mixed with Zn and/or Dy2O3 powders. The addition of 0.6 wt.% Zn or 2 wt.% Dy2O3 is effective in improving the magnetic properties of the magnets, and their coercivities are about 11% or 15%, respectively, higher than that of the additive free...
Magnetostrictive materials suitable for high sensitivity strain sensor and ultrasonic transducer have increasingly attracted researchers' interest recently. Nonmetallic magnetostrictive materials based on co-ferrite are excellent candidates for rare earth giant magnetostriction materials for the unique advantages of high strain sensitivity, high electrical resistivity, low cost, chemical and thermal...
Introduction: The giant magnetostrictive materials of Tb-Dy-Fe alloy can realize efficient conversion of energy and information between electromagnetic energy and mechanical energy and have been used in magnetomechnical transducers, actuators, adaptive viberation control systems[1,2], and so on. As the Tb-Dy-Fe alloy has MgCu2 structure type, the magnetostriction along the magnetic easy axis <111>...
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