(Color online) (a) XRD patterns, and (b) demagnetization curves measured along c-axis of the deformed bulks at different temperatures. The pressure loading rate is fixed at 150 MPa/min with the maximum applied pressure 1.5 GPa. The XRD pattern and demagnetization curve of isotropic raw MQU-F ribbons are also included. The inset of Fig. 1(b) gives the demagnetization curves measured along and perpendicular to pressure loading direction of the 650 °C deformed magnets.
(Color online) (a) XRD patterns, and (b) demagnetization curves measured along c-axis of the magnets deformed at 650 °C by different pressure loading rate. The maximum applied pressure is fixed at 1.5 GPa.
(Color online) Dependence of (BH)max on pressure loading rate of the magnets deformed at 650 °C.
(Color online) TEM images of the magnets (a) before deformation, and deformed at 650 °C by pressure loading rate of (b) 300 MPa/min, and (c) 50 MPa/min. The thin layers in bright contrast along grain boundaries in (a) are Nd-rich phase.
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