TY - JOUR
T1 - Structural, magnetic and magnetocaloric properties of Heusler alloys Ni50Mn38Sb12 with boron addition
AU - Van Nong, Ngo
AU - Tai, N.T.
AU - Huy, N.T.
AU - Trung, N.T.
AU - Bahl, Christian Robert Haffenden
AU - Krishnan Venkatesh, Radha
AU - Poulsen, Finn Willy
AU - Pryds, Nini
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - Magnetic refrigeration
KW - Magnetisk køling
U2 - 10.1016/j.mseb.2011.07.013
DO - 10.1016/j.mseb.2011.07.013
M3 - Journal article
SN - 0921-5107
VL - 176
SP - 1322
EP - 1325
JO - Materials Science & Engineering: B. Solid-state Materials for Advanced Technology
JF - Materials Science & Engineering: B. Solid-state Materials for Advanced Technology
IS - 16
ER -