Hall Effect in Ferromagnetics
Hall Effect in Ferromagnetics
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DOI：
10.1103/physrev.95.843
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发表时间：
1954-08
期刊：
影响因子：
--
通讯作者：
C. Kooi
中科院分区：
文献类型：
--
作者：
C. Kooi
温度其中，E1是霍尔电场，H是所施加的磁场，M是磁化强度，并且R 0和R1分别是寻常霍尔常数和非寻常霍尔常数。这封信报告了作为0%至5%硅的铁硅合金的电阻率的函数的R»的测量。Karplus和Luttinger在他们的非寻常霍尔效应理论中发现，在某种近似下，R应该取决于电阻率的平方。他们的机制利用d电子的自旋轨道相互作用。已经测量了纯铁和镍的电阻率的函数，其中电阻率通过改变温度而改变。由于p~ T，这并不能说明p或T是有效量。我们的测量是在铁硅上进行的，其电阻率通过改变硅含量而改变。我们的样品是从商业轧制的铁-硅片材上切割的，没有进行热处理，也没有试图以相对于轧制方向的任何特定角度切割它们。在600 cps下使用约30安培/厘米2的初级电流密度，并且用窄带放大器测量霍尔电压
Temp. oK where E~ is the Hall electric field, H is the applied magnetic field, M is the magnetization, and Ro and R» are the ordinary and extraordinary Hall constants, respectively. This letter reports measurements of R» as a function of resistivity for iron-silicon alloys of 0 percent to 5 percent silicon. Karplus and Luttinger,'in their theory of the extraordinary Hall eGect, have found that in a certain approximation R» should depend on the square of the resistivity. Their mechanism uses the spin-orbit interaction of the d electrons. R» has been measured as a function of resistivity" for pure iron and nickel where the resistivity was changedby changing the temperature. Since p~ T, this does not tell whether p or T is the significant quantity. Our measurements were done on iron-silicon, whose resistivity was changed by changing the silicon content. Our samples were cut from commercial rolled iron-silicon sheet with no heat treatment and no attempt to cut them at any particular angle with respect to the direction of rolling. A primary current density of about 30 amperes/cm' at 600 cps was used and the Hall voltage measured with a narrow band amplifier