Is there any technique/mathematical relations to measure/calculate the electric field/magnetic field variation with temperature and time inside a bulk metal which is placed in an electromagnetic field?
You need multi physics simulator, COMSOL is one good choice here you can find effect of temperature of E and H fields.
Dear Sir, I have tried with COMSOL but above mentioned variation i am not able to get. Your suggestions will be more helpful regarding how to incorporate these variations in a model.
Thanks Skvor, I am trying to find out the variation in electric/magnetic filed in a bulk metal piece with its increasing temperature. The metal block of 20 mm*20 mm*20 mm which is kept in an electromagnetic wave field? Power source is AC based which generated electromagnetic radiations.
You still haven't given enough information. The frequency of the AC field is very important, and also how big the piece of metal is. For instance, at 10 GHz the electromagnetic fields will be so small they are undetectable 0.1 mm into the metal and simulation codes may not give an accurate answer here. If you are looking in the middle of a piece of copper or aluminium a few millimetres across then you won't see AC fields unless the frequency is below a kHz. If you look up skin depth in metals you should find a lot. The skin depth depends on conductivity which is a function of temperature. COMSOL will let you put in conductivity as a function of temperature - read the manual.
At the same time, could you specify what metal at what temperature? Most metals are good conductors, some metals are ferromagnetics - say up to a certain temperature. And many metals can become superconductors (nearly no magnetic field inside) at quite low temperatures ....
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