Abstract
A first order transition from a paramagnetic-austenite phase to a ferromagnetic-martensite phase occurring in off-stoichiometry single crystals of at 313 K presents unique features due to the multifunctional character of the magnetic shape memory alloy. A remarkable magnetocaloric effect, associated with an entropy change up to and an adiabatic temperature change , accompanied by mechanical strain have been observed in samples subjected to changes of the applied magnetic field . The effects of magnetic field, temperature, and stress on the entropy variation are quantified and compared.
- Received 4 May 2005
DOI:https://doi.org/10.1103/PhysRevB.72.094435
©2005 American Physical Society