This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
 

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Temperature coefficient of resistance (or called thermal coefficient of resistance, TCR) can be given by,

         TCR = (1/R₀)*(ΔR/ΔT) (°C^-1) ------------------------- [2833]

where,
         R₀ -- The resistance at ambient temperature,
         ΔR -- The change of electrical resistance,
         ΔT -- The change of temperature,
         ΔR/ΔT -- The slope of R-T curve.