Abstract
We have investigated the thermal expansivities of an ErFeO3 single crystal along the three crystallographic orientations using a high-resolution capacitance dilatometer and found clear signatures of lattice distortions in the spin rotation region as evidence for strong spin-lattice coupling. The observed lattice strain is consistent with the smooth rotation of the magnetization and it reveals the importance of the magnetoelastic interaction. Heat capacity measurements show a well-defined plateau-like enhancement in the spin re-orientation regime as predicted by the Landau theory of second order phase transitions. The data are used to estimate microscopic anisotropy parameters. Heat capacity is also measured near the low-temperature erbium magnetic ordering transition.
Original language | English |
---|---|
Article number | 042014 |
Journal | Journal of Physics: Conference Series |
Volume | 150 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2009 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy