Skip to Main Content
The Principles of Thermodynamics
book

The Principles of Thermodynamics

by N.D. Hari Dass
October 2013
Intermediate to advanced content levelIntermediate to advanced
352 pages
13h 56m
English
CRC Press
Content preview from The Principles of Thermodynamics
Magnetic Systems 169
Therefore, the Curie law gives, for the difference C
B
e
C
M
,
C
B
e
C
M
=
aV B
2
e
T
2
(8.79)
which agrees with eqn(8.28), on using Curie law.
As another check on the model let us compute
C
B
e
B
e
and
C
M
M
. Explicit
evaluation yields
C
B
e
B
e
=
2aV B
e
T
2
= T
2
T
2
M
B
e
(8.80)
C
M
M
=0=T
2
T
2
B
e
M
(8.81)
In obtaining the second equation we used the fact that B
e
is linear in T when M is
held xed. This is in accord with eqn.(8.21).
8.2.6 Equilibrium conditions
Now we briey discuss the connection between the magnetic thermodynamic poten-
tials and the criterion for equilibrium for magnetic systems. As far as the Helmholtz
free energy is concerned, th
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Thermodynamics

Thermodynamics

S. C. Gupta

Publisher Resources

ISBN: 9781466512085