報告模版 1霍爾效應(yīng)及其應(yīng)用

PAGEPAGE7得分教師簽名批改日期課程編號課程編號深圳大學(xué)實驗報告課程名稱：大學(xué)物理實驗（2）實驗名稱：學(xué)院：組號：指導(dǎo)教師：報告人：學(xué)號：實驗地點實驗時間：年月日星期實驗報告提交時間：一、實驗?zāi)康亩嶒炘恚喝嶒瀮x器：四、實驗內(nèi)容和步驟：.六、數(shù)據(jù)處理：勵磁線圈參數(shù)K=4.02KGS·A-1霍爾片厚度d=0.5mm=0.00005m1測量試樣的VH-IS和VH-IM，確定樣品的霍爾系數(shù)（1）保持勵磁電流IM=0.5A不變，IS/mAV1/mVV2/mVV3/mVV4/mVVH/mV+B，+IS-B，+IS-B，-IS+B，-IS1.00-2.582.63-2.662.592.6151.50-3.853.89-3.923.823.872.00-5.215.28-5.305.195.2452.50-6.516.59-6.626.366.523.00-7.747.97-8.007.837.8853.50-9.009.15-9.178.949.0654.00-10.2210.08-10.1010.1810.145由圖得UH/IS=2.544帶入公式RH=UHd/ISB=UHd/ISKIM得RH=2.544*0.0005/(4.02*0.5)=0.000633C/m3KH=RH/d=0.000633/0.00005=12.65672mV/mA`KGS（2）保持霍爾片工作電流IS=3mA不變，IM/mAV1/mVV2/mVV3/mVV4/mVVH/mV+B，+IS-B，+IS-B，-IS+B，-IS300.00-4.604.71-4.714.604.655400.00-6.146.25-6.296.116.1975500.00-7.707.82-7.857.577.735600.00-9.269.39-9.419.259.3275700.00-10.8210.97-10.9810.8210.8975800.00-12.4112.54-12.5612.4012.4775由圖得UH/IM=0.015帶入公式RH=UHd/ISB=UHd/ISKIM得RH=0.015*0.0005/(4.02*0.003)=0.000622C/m3KH=RH/d=0.000622/0.00005=12.43781mV/mA`KGS2測量螺線管軸線上磁場分布霍爾片工作電流IS=6mA，勵磁電流IM=0.600A霍爾元件靈敏度KH=2.14mV/mA·KGSX1/cmX2/cmX/cmV1/mVV2/mVV3/mVV4/mVVH/mVB/KGS+B，+IS-B，+IS-B，-IS+B，-IS0.00.0140.40-0.590.56-0.410.490.0381620.50.013.50.65-0.830.82-0.670.74250.0578271.00.0130.70-0.860.84-0.710.77750.0605531.50.012.50.92-1.041.03-0.930.980.0763242.00.0120.97-1.091.07-0.981.02750.0800235.00.091.02-1.131.12-1.031.0750.0837238.00.061.02-1.131.12-1.041.07750.08391711.00.031.03-1.131.11-1.041.07750.08391714.00.001.02-1.111.10-1.031.0650.08294414.03.0-31.03-1.121.11-1.041.0750.08372314.06.0-61.02-1.121.11-1.041.07250.08352814.09.0-91.02-1.121.12-1.031.07250.08352814.012.0-120.96-1.091.09-0.971.02750.08002314.012.5-12.50.92-1.061.05-0.930.990.07710314.013.0-130.85-0.990.98-0.870.92250.07184614.013.5-13.50.71-0.850.84-0.710.77750.06055314.014.0-140.47-0.610.60-0.480.540.042056七、實驗結(jié)論與討論：實驗分別測得霍爾系數(shù)為0.000633C/m3和0.000622C/m3，霍爾器件靈敏度分別為12.65672mV/mA`KGS和12.43781mV/mA`KGS。在長直螺線管周圍磁場成凸狀分布，中間大，兩邊小。八：問答題如果磁感應(yīng)強度B不垂直于霍爾片，對測量結(jié)果有何影響？如何由實驗判斷B與霍爾片是否垂直？若磁感應(yīng)強度B不垂直于霍爾片，則應(yīng)有磁感應(yīng)強度B的分量B1垂直于霍爾片，而B=B1cosα又因為0<cosα<1，所以當(dāng)測得的UH比理論值小的時候，有可能為磁感應(yīng)強度B不垂直于霍爾片的情況?；魻栃?yīng)有哪些應(yīng)用。試舉一例，并簡單闡述其原理。訖今為止，已在現(xiàn)代汽車上廣泛應(yīng)用的霍爾器件有：在分電器上作信號傳感器、ABS系統(tǒng)中的速度傳感器。其原理與實驗中的霍爾效應(yīng)原理相似，利用了電流