The temperature will rise until either the rate of loss of heat balances the rate of its generation, or the container loses structural integrity. I wondered wh

The temperature will rise until either the rate of loss of heat balances the rate of its generation, or the container loses structural integrity. I wondered whether 'critical temperature' meant a temperature above which the junction fails to generate an EMF - which would not be an issue here, even if this were the case, as we know this material works at 2000C - but the article seems to use the term to mean certain temperatures that have engineering relevance, with regard to the design of the device, as opposed to fundamental physical limits to feasibility.