This essay, Starting from the Calculation of the atomic magnetic moment, approaches the quantum theory of Paramagaetism and diamagnetism by applying quantum mechanics perturbation theory.

本文从原子磁矩的计算入手，按着运用量子力学微扰论方法探讨原子顺磁磁化和抗磁磁化的量子理论。

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For the magnetic perturbation contribution, we obtain the frequency shift of modes with different degree as a function of the spectrum of fluctuating magnetic field.

如果只考虑磁扰动的贡献，不同值的振动模的频率变化仅只是涨落磁场能谱的函数。

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A pick-up coil of the sensor designed can acquire the faint signal of the magnetic perturbation on surface of aluminum plane.

该探头能够通过设计的检测线圈来提取铝板表面磁场扰动的微弱变化。

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