Richard Clark wrote in
:

....
What you describe (sans the problematic word latent) is specific heat
capacity.

I used the term latency in the context of time, there is a delay between
commencement of application of steady power to reaching substantially full
operating temperature. Yes, the effect can be predicted using the material
specific heat capacity, subject to the temperature variability of the
ferrite characteristics.

....
the intent of both your statements), then the specific heat capacity
you describe is a design boon.

Yes, but a trap if long term use is envisaged but tested only in the short
term.

Owen