Table:
text: Rare-earth magnet
Magnetic properties
Magnetic properties
Magnet B_r_T H_ci_kA_m BH_max_kJ_m_3_ T_c_C
Nd 2 Fe 14 B (sintered) 1.0–1.4 750–2000 200–440 310–400
Nd 2 Fe 14 B (bonded) 0.6–0.7 600–1200 60–100 310–400
SmCo 5 (sintered) 0.8–1.1 600–2000 120–200 720
Sm(Co,Fe,Cu,Zr) 7 (sintered) 0.9–1.15 450–1300 150–240 800
Alnico (sintered) 0.6–1.4 275 10–88 700–860

Question: If 0.6-1.4 is the br (t) among rare earth magnets, then what is the h ci (ka/m)?

Question: If nd 2 fe 14 b (bound) is the magnet, how many measurements of tc (°c) for the rare earth magnet?

Question: If 720 is tc (°C) and 456 h is ci (ka/m), then what is a rare earth magnet?