【精品】物理实验报告__磁滞回线的作图

【精品】物理实验报告__磁滞回线的作图 [数据处理] 一初始磁化曲线数据表 1 NH,I有公式 , l B/mT 0.1 0.6 1.2 2.7 3.8 5.2 6.7 8.2 9.6 I/mA 1.1 5.0 10.2 22.0 30.1 39.9 50.7 60.7 70.1 H/A/m 9.13 41.50 84.66 182.60 249.83 331.17 420.81 503.81 581.83 B/mT 11.4 13.2 15.0 23.2 32.6 41.6 54.4 69.8 86.9 I/mA 81.0 91.1 100.2 130.4 162.2 190.9 231.4 281.1 335.1 H/A/m 672.30 756.13 831.66 1082.32 1346.26 1584.47 1920.62 2333.13 2781.33 B/mT 103.0 120.5 138.5 154.6 172.7 1 I/mA 381.7 432.2 486.1 538.0 600.8 H/A/m 3168.11 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 172.7 168.2 163.1 158.0 151.3 143.8 134.7 124.8 112.7 I/mA 600.8 548.9 498.4 452.3 400.5 350.4 298.5 250.2 198.2 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 84.8 75.0 63.5 50.3 35.7 22.3 5.4 -0.6 I/mA 150.0 99.7 69.9 36.5 0.0 -38.2 -72.4 -114.6 -129.0 H/A/m 1245.00 827.5 580.17 302.95 0.00 -317.0 -600.92 -915.18 -1070.7 B/mT -9.6 -31.5 -47.6 -69.3 -88.4 -102.1 -118.6 -129.6 -146.5 I/mA -151.9 -206.2 -246.9 -302.1 -352.4 -390.4 -437.4 -470.6 -523.3 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 -165.0 -169.5 -177.0 -173.7 -169.7 -165.2 -158.8 -151.5 I/mA -558.4 -584.4 -600.4 -616.5 -580.4 -537.3 -494.8 -437.5 -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 -126.0 -106.5 -93.1 -81.5 -73.2 -63.6 -49.1 -43.7 I/mA -327.3 -253.0 -174.6 -128.9 -92.0 -67.3 -39.9 0.0 14.0 H/A/m -2716.59 -2099.90 -1449.18 -1069.87 -763.60 -558.59 -331.17 0.00 116.20 B/mT -27.5 -5.8 6.7 26.5 42.2 57.2 72.1 92.9 114.4 I/mA 55.8 109.3 140.7 189.1 228.1 265.9 303.7 357.8 416.6 H/A/m 463.14 907.19 1167.81 1569.53 1893.23 2206.97 2520.71 2969.74 3457.78 B/mT 129.8 138.8 151.4 165.1 172.4 I/mA 461.5 498.0 529.2 576.1 601.8 H/A/m 3830.45 4133.40 4392.36 4781.63 4994.94 图二 磁滞回线 200 150 100 50 0B/mTB/mT-6000-4000-20000200040006000-50 -100 -150 -200 H/A/m 表三 基本磁化曲线数据表 B/mT 0.0 3.9 8.2 17.1 28.0 39.4 59.4 76.3 95.5 114.3 I/mA 0.0 31.9 60.1 104.8 157.0 197.7 257.2 306.2 360.0 413.5 H/A/m 0.0 264.77 498.83 869.84 1303.10 1640.91 2134.76 2541.46 2988.00 3432.05 B/mT 128.8 144.6 158.8 172.8 I/mA 456.0 504.2 550.7 600.6 H/A/m 3784.80 4184.86 4570.81 4984.98 图三 基本磁化曲线200 150 100B/mTB/mT 50 0 0100020003000400050006000 H/A/m