Difference Between Speromagnetism, Paramagnetism & Spin-Glass

[Choszech]

Hi all !

Could me someone explain what is the difference between: speromagnetism - paramagnetism and spin-glass and how it behave for example in heat capacity ?

Ch. Ch.

 

[jedishrfu]

Do you mean ferromagnetism? That would be magnets made of iron vs paramagnetism where the atoms have conveniently aligned to create a weak magnet.

Wikipedia has an article that may help

http://en.wikipedia.org/wiki/Ferromagnetism

 

[Choszech]

Not exactly :

"There are also examples of disordered materials (such as iron phosphate glasses) that become antiferromagnetic below their Néel temperature. These disordered networks 'frustrate' the antiparallelism of adjacent spins; i.e. it is not possible to construct a network where each spin is surrounded by opposite neighbour spins. It can only be determined that the average correlation of neighbour spins is antiferromagnetic. This type of magnetism is sometimes called speromagnetism." http://en.wikipedia.org/wiki/Antiferromagnetism

http://www.worldscientific.com/doi/pdf/10.1142/9789812774842_fmatter - the second page

Ch. Ch.