Conference paper
Gd3Fe5O12 near the compensation temperature
Thermo Ceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Electroceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Surface Physics and Catalysis, Department of Physics, Technical University of Denmark5
Department of Physics, Technical University of Denmark6
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.
| Language: | English |
|---|---|
| Publisher: | Danish Physical Society |
| Year: | 2010 |
| Pages: | 63-63 |
| Proceedings: | Danish Physical Society Annual Meeting 2010 |
| Types: | Conference paper |
| ORCIDs: | Kuhn, Luise Theil , Bahl, Christian Robert Haffenden and Frandsen, Cathrine |
