The result showed that the P-type conductivity of samples will not change,since a certain amount of Nitrogen still existing in the samples after ball milling process , though in which some Nitrogen lost.
the results showed that in the process of ball milling, it caused some loss of N, but there was still some amount of N existing in the samples, so it will not change the P-type conductivity of samples.
The results showed that in the milling process will cause some loss of nitrogen, but there is still a certain amount of nitrogen in the samples. So there will be no change in the sample p-type conductivity
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