Resistivity of the composite is much greater than that of pure SP under cryogenic temperature (77k), which is called Coulomb Blockade Effect.

复合材料低温下(77k)的体积电阻率明显高于纯sp，可以看作是库仑阻塞作用的结果。

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To understand the change of the magnetic properties and mechanical properties of magnets after the subzero treatment, and the effect of sintered Nd-Fe-B magnet with the cryogenic treatment.

以了解其深冷处理后磁性能和力学性能的变化，以及深冷处理对烧结钕铁硼的作用机理。

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