High-Temperature Behavior of Hard Magnetic Alloys (R, Zr)(Co, Cu, Fe) (z) (R = Sm, Gd)

作者：Lyakhova M B^*; Semenova E M; Ivanov R P

来源：Metal Science and Heat Treatment, 2015, 56(11-12): 602-608.

DOI：10.1007/s11041-015-9807-4

• hard magnetic materials
• magnetic hysteresis
• coercivity
• temperature stability
• nanostructure
• magnetic domain structure

Hysteresis loops of cast specimens of R0.85Zr0.15(Co0.70Cu0.09Fe0.21) (z) (R = Sm, Gd) are measured in the temperature range of 20 - 600A degrees C. The temperature dependences of their magnetic characteristics are plotted. The microstructure and the rearrangement of the domain structure in external fields are studied. It is shown that the specimens with a low stoichiometric ratio z, when most of the volume is occupied with a copper-enriched structural component with z similar to 5 - 6, exhibit the highest stability of the coercivity.

• 出版日期2015-3