Why susceptibility of diamagnetic materials is negative?

As we have discussed in the earlier articles, that relative permeability of diamagnetic materials is lesser than 1 and  also there is a relation between relative permeability (μr)and susceptibility (χ):

μr = 1 + χ

where is μr

or χ = μr – 1

and μr is less than 1

therefore, χ is negative

Reference: This article is referred from my book “electrical engineering materials” having ISBN 978-81-272-5069-0. In case of any question, you can put your question in the comment section.

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