For a spin 1/2 paramagnet with localised moments in the low-field, high-temperature limit the magnetization is given by Curie's law CURIE M BI (k T) %3D where the symbols have their usual meaning. How is this expression modified when the spin 1/2 magnetic moments are instead delocalised conduction electrons? Select one: CURIE O a. - (T/T) × M Ob. CURIE - M O c. - (T) ×MOURIE
For a spin 1/2 paramagnet with localised moments in the low-field, high-temperature limit the magnetization is given by Curie's law CURIE M BI (k T) %3D where the symbols have their usual meaning. How is this expression modified when the spin 1/2 magnetic moments are instead delocalised conduction electrons? Select one: CURIE O a. - (T/T) × M Ob. CURIE - M O c. - (T) ×MOURIE
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Transcribed Image Text:For a spin 1/2 paramagnet with localised moments in the low-field, high-temperature limit the magnetization is given by Curie's law
CURIE
M
2
- Ν' BI(k )
where the symbols have their usual meaning. How is this expression modified when the spin 1/2 magnetic moments are instead delocalised conduction electrons?
Select one:
Oa.
- (T/T) × M
CURIE
Ob.
CURIE
- M
O c. - (T-ST) ×MCURIE
Transcribed Image Text:87
Rb atoms, assuming that they behave like an ideal gas of bosons and their number density is 2.5 x 10
18
-3
Estimate the Bose-Einstein condensation temperature for
Select one:
О а. 30 nK
O b. 30 pK
Ос. 30 pK
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