 
      
永磁鐵氧體材料物理特性
| 參數Parameter | 符號Mark | 單位Unit | 數值Value | 
| 回復磁導率Recoil permeability | μrec | Gs/Oe | 1.05-1.3 | 
| 居里溫度 Curie temperature | Tc | ℃ | 450 | 
| 剩磁溫度系數 The coefficient of demagnetization to temperature | α(Br) | ℃-1 | -0.2%(0-100℃) | 
| 磁化強度矯頑力的溫度系數  The coefficient of magnetization coercive force to     temperature | α(Hc) | ℃-1 | 0.2%-0.5%(0-100℃) | 
| 密度 Density | d | g/cm3 | 4.7-5.0 | 
| 電阻率 Resistivity | ρ | Ω,cm | ≥ 106 | 
| 線膨脹系數 The coefficient of linear expansion | α | ℃-1 | 7-15×10-6 | 
| 硬度Hardness | HV | - | 480-580 |