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首页> 外文期刊>Physica, B. Condensed Matter >Experimental test of the Preisach-Arrhenius model with temperature
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Experimental test of the Preisach-Arrhenius model with temperature

机译：温度对Preisach-Arrhenius模型的实验测试

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摘要

The magnetic aftereffect was measured for a magnetic particle tape over a temperature range of 10-380 K. Data were obtained for the saturation magnetization, the coercive field, and the remanent coercive field as a function of temperature. Switching field distributions and other Preisach parameters were also determined as a function of temperature. Based on these data, the Preisach-Arrhenius (PA) model predicts that the decay rate, S, should decrease monotonically as the temperature is reduced. It was found that, for the material studied, S is nearly proportional to temperature, T, for T between about 150 and 380 K, in good agreement with the PA model, but that there is considerable deviation for T < 150 K and a temperature range exists over which S increases with decreasing temperature. A modification of the PA model is required to explain this low-temperature behavior is briefly noted.
机译：在10-380 K的温度范围内测量了磁带的磁后效应。获得了饱和磁化强度，矫顽场和剩余矫顽场随温度变化的数据。还确定了开关场分布和其他Preisach参数是温度的函数。根据这些数据，Preisach-Arrhenius（PA）模型预测，随着温度降低，衰减率S应该单调降低。发现，对于所研究的材料，S几乎与温度T成正比，对于介于150和380 K之间的T，与PA模型非常吻合，但是对于T <150 K和温度，存在相当大的偏差存在随温度降低而S增加的范围。需要对PA模型进行修改以简要说明这种低温行为。

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