Abstract
Applying a magnetic eld to a magnetic material will usually cause a change in the magnetic entropy of
the material. If done adiabatically, the temperature of the material will change - this is the magnetocaloric
eect. Gadolinium Iron Garnet (GdIG, Gd3Fe5O12) is a complex magnetic system with three magnetic
sublattices, one Gd and two Fe. The Fe sites are strongly coupled antiferromagnetically, i.e. the magnetic
moments are anti-parallel, while the Gd magnetic moment is weakly coupled antiferromagnetically to the
resulting Fe moment. This results in a compensation temperature, where the total magnetic moment is
zero, while the material is still in the magnetic phase and, for applied magnetic elds up to mu0H=1.6
T, the magnetic entropy change is also zero. On my poster I will present the results I have obtained on
a sample of GdIG.
| Original language | English |
|---|---|
| Title of host publication | Program and abstracts |
| Publisher | Danish Physical Society |
| Publication date | 2010 |
| Pages | 63-63 |
| Publication status | Published - 2010 |
| Event | Danish Physical Society Annual Meeting 2010 - Nyborg, Denmark Duration: 22 Jun 2010 → 23 Jun 2010 |
Conference
| Conference | Danish Physical Society Annual Meeting 2010 |
|---|---|
| Country/Territory | Denmark |
| City | Nyborg |
| Period | 22/06/2010 → 23/06/2010 |
Keywords
- Magnetic refrigeration
- Fuel Cells and hydrogen