Journal article
Structural, magnetic and magnetocaloric properties of Heusler alloys Ni50Mn38Sb12 with boron addition
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
Hanoi University of Science and Technology4
PetroVietnam University5
Delft University of Technology6
Microstructures and Interfaces, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark7
We report on the structural, magnetic and magnetocaloric properties of the Ni50Mn38Sb12Bx alloys in term of boron addition with x=1, 3 and 5. We have found that both the paramagnetic–ferromagnetic austenitic transition (TC) and the ferromagnetic–antiferromagnetic martensitic transition (TM) are sensitively influenced by the boron addition: TC tends to increase, while TM decreases with increasing boron concentration.
Temperature dependent X-ray diffraction in the range of 200–500K clearly shows an evolution of the structural transformation from orthorhombic to cubic structure phase transition on heating for the x=1 and 3 samples. Strikingly, the addition of boron atoms into the lattice favours the ferromagnetic ordering relatively to the antiferromagnetic arrangement below TM.
This consequently affects on the magneto-structural transition as well as on the size of magnetocaloric effect.
| Language: | English |
|---|---|
| Year: | 2011 |
| Pages: | 1322-1325 |
| ISSN: | 18734944 and 09215107 |
| Types: | Journal article |
| DOI: | 10.1016/j.mseb.2011.07.013 |
| ORCIDs: | Van Nong, Ngo , Bahl, Christian Robert Haffenden and Pryds, Nini |
