Curie's Law and 3rd Law of Thermodynamics

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SUMMARY

The discussion centers on the relationship between Curie's Law and the Third Law of Thermodynamics, specifically regarding paramagnetic substances at temperatures approaching absolute zero (0K). Curie's Law, expressed as M = CH/T, indicates that magnetization (M) is inversely proportional to temperature (T). However, it is established that Curie's Law fails at temperatures near 0K, as the magnetization does not approach infinity but rather reaches a limit due to the absence of excited states, consistent with the Third Law of Thermodynamics.

PREREQUISITES
  • Understanding of Curie's Law and its formula M = CH/T
  • Familiarity with the Third Law of Thermodynamics
  • Basic knowledge of paramagnetic substances and their properties
  • Concept of absolute zero (0K) and its implications in thermodynamics
NEXT STEPS
  • Research the implications of the Third Law of Thermodynamics on magnetic properties
  • Study the behavior of paramagnetic materials at low temperatures
  • Explore the concept of magnetic susceptibility and its relationship with temperature
  • Investigate quantum mechanics principles that explain atomic behavior at 0K
USEFUL FOR

This discussion is beneficial for physics students, researchers in thermodynamics, and anyone studying the magnetic properties of materials, particularly at low temperatures.

pitbull
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Homework Statement


"According to 3rd Principle of Thermodynamics, prove whether or not paramagnetic substances obey Curie's Law at temperatures close to 0K"

Homework Equations


Curie's Law: M=CH/T

The Attempt at a Solution


I've done some research and I found this link (on page 245): http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1949/giauque-lecture.pdf
It says that Curie's Law fails at temperatures close to 0K, but I don't know why. Is it because M goes to infinite?
Thank you
 
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If M = CH/T what does this predict as you lower the temp? What does H due to the magnetization. Physically what does the magnetic field do to the atoms? Is there a limit to the value of M? What happens at 0 deg K? ( Think no excited states.) How does this compare to what Curies Law states?
 
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