物理实验报告 磁滞回线的作图

表一1 初始磁化曲线数据表

有公式 ：HB/mT I/mA H/A/m B/mT I/mA H/A/m B/mT I/mA H/A/m NlI

2.7 22.0 182.60 23.2 130.4 1082.32 154.6 538.0 3.8 30.1 249.83 32.6 162.2 5.2 39.9 331.17 41.6 190.9 6.7 50.7 420.81 54.4 231.4 1920.62 8.2 60.7 503.81 69.8 281.1 9.6 70.1 581.83 86.9 335.1 0.1 1.1 9.13 11.4 81.0 672.30 103.0 381.7 3168.11 0.6 5.0 41.50 13.2 91.1 756.13 120.5 432.2 1.2 10.2 84.66 15.0 100.2 831.66 138.5 486.1 1346.26 1584.47 172.7 600.8 2333.13 2781.33 1 3587.26 4034.63 4465.40 4986.64

由上图可以看出初始曲线过零点，说明当铁磁性材料中不存在磁化场时，H，B均为0，所

以由曲线可知，B与H不是线性关系。开始B随H增加较快，最终B随H增加十分缓慢，到达磁性饱和状态

表2 磁滞回线数据表

B/mT 172.7 I/mA 600.8 168.2 548.9 163.1 498.4 158.0 452.3 151.3 400.5 143.8 350.4 134.7 298.5 124.8 250.2 112.7 198.2 H/A/m 4986.64 4555.87 4136.72 3754.09 3324.15 2908.32 2477.55 2076.66 1645.06 B/mT 99.8 I/mA 150.0 84.8 99.7 75.0 69.9 580.17 -47.6 -246.9 63.5 36.5 302.95 -69.3 -302.1 50.3 0.0 0.00 -88.4 -352.4 35.7 -38.2 -317.0 -102.1 -390.4 22.3 -72.4 5.4 -114.6 -0.6 -129.0 H/A/m 1245.00 827.5 B/mT -9.6 I/mA -151.9 -600.92 -915.18 -1070.7 -118.6 -437.4 -129.6 -470.6 -146.5 -523.3 -31.5 -206.2 H/A/m -1260.77 -1711.46 -2049.27 -2507.43 -2924.92 -3240.32 -3630.42 -3905.98 -4343.39 B/mT -157.3 I/mA -558.4 -165.0 -584.4 -169.5 -600.4 -177.0 -616.5 -173.7 -580.4 -169.7 -537.3 -165.2 -494.8 -158.8 -437.5 -151.5 -387.1 H/A/m -4634.72 -4850.52 -4983.32 -5116.95 -4817.32 -4459.59 -4106.84 -3631.25 -3212.93 B/mT -141.5 I/mA -327.3 -126.0 -253.0 -106.5 -174.6 -93.1 -128.9 -81.5 -92.0 -73.2 -67.3 -63.6 -39.9 -49.1 0.0 -43.7 14.0 116.20 114.4 416.6 H/A/m -2716.59 -2099.90 -1449.18 -1069.87 -763.60 -558.59 -331.17 0.00 B/mT -27.5 I/mA 55.8 -5.8 109.3 6.7 140.7 26.5 189.1 42.2 228.1 57.2 265.9 72.1 303.7 92.9 357.8 H/A/m 463.14 B/mT 129.8 I/mA 461.5 907.19 138.8 498.0 1167.81 1569.53 1893.23 2206.97 2520.71 2969.74 3457.78 151.4 529.2 165.1 576.1 172.4 601.8 H/A/m 3830.45 4133.40 4392.36 4781.63 4994.94 图二 磁滞回线20015010050B/mT0-6000-4000-2000-500-100-150-200H/A/m200040006000B/mT

表三 基本磁化曲线数据表

B/mT 0.0 I/mA 0.0 H/A/m 0.0 B/mT 128.8 I/mA 456.0 3.9 31.9 8.2 60.1 17.1 104.8 28.0 157.0 39.4 197.7 59.4 257.2 76.3 306.2 95.5 360.0 114.3 413.5 264.77 498.83 869.84 1303.10 1640.91 2134.76 2541.46 2988.00 3432.05 144.6 504.2 158.8 550.7 172.8 600.6 H/A/m 3784.80 4184.86 4570.81 4984.98 图三 基本磁化曲线200150B/mT1005000100020003000H/A/m400050006000B/mT