| M—H回线可变时间常数的测量方法 |
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| 引用本文： | 李震,李佐宜,杨晓非,胡用时.M—H回线可变时间常数的测量方法[J].仪器仪表学报,2001,22(6):580-582. |
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| 作者姓名： | 李震 李佐宜 杨晓非 胡用时 |
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| 作者单位： | 华中科技大学电子科学与技术系,武汉,430074 |
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| 基金项目： | 得到教育部薄膜与微细加工重点实验室基金资助. |
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| 摘 要： | 针对光调制直接重写磁光薄膜磁滞回线的测量，提出一种简单的自动变积分时间常数的测量方法，既能有效地抑制噪声，确保幅度和相位的不失真，又能保证M－H矩形度的不失真，以及矫顽力Hc的一定精度。并给出一个比较例子，结果表明该方法更合理。
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| 关 键 词： | 直接重写磁光薄膜 M－H积线 积分器 时间常数 噪声 矫顽力 |
| 修稿时间： | 2000年8月1日 |
A Method of Measuring M-H Hysteresis Loop Curves Based on Shift-variant Low Pass Filter |
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| Li Zhen,Li Zuoyi,Yang Xiaofei,Hu Yongshi.A Method of Measuring M-H Hysteresis Loop Curves Based on Shift-variant Low Pass Filter[J].Chinese Journal of Scientific Instrument,2001,22(6):580-582. |
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| Authors: | Li Zhen Li Zuoyi Yang Xiaofei Hu Yongshi |
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| Abstract: | A method of measuring M-H hysteresis loop based on shift-variant low pass filter is presented in this paper. It ensures not only that the amplitude and phase of magnetization and form of M-H hysteresis loop curve are not distortion, but also that the determination of coercivity is in certain accuracy. A given example of application shows that the method is reasonable. |
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| Keywords: | Direct over-write magneto-optical thin film M-H hysteresis loop curve Integrator Time constant Noise Coercivity |
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