Sequence of structural and magnetic transitions in Ni48Co2Mn39Sn11 shape memory alloy

Strongly enhanced antiferromagnetism and giant spontaneous exchange bias in Ni50Mn36Co4Sn10 Heusler alloy

“…3(b). The l we obtained is much smaller compared with the previously reported results, 22,29,30 which implies the SPM embedded in AFM at 125 K T 250 K, rather than the simple SPM behavior as the substitution of Co for Ni in Ni 43.5 Co 6.5 Mn 39 Sn 11 . 22 Now, we turn our attention to the discussion of the EB effect.…”

“…The temperature dependence of l shows the same behavior, 30 i.e., the l increases linearly with the decrease of temperature, as shown in the inset of Fig. 3(b).…”

Superparamagnetism and superspin glass behaviors in multiferroic NiMn‐based magnetic shape memory alloys

“…Shown in Fig. is the magnetic hysteresis loop of martensite for the Ni 48 Co 2 Mn 39 Sn 11 alloy, experimentally recorded at 70 K (< T P ) . This representative magnetic hysteresis loop clearly demonstrates that the magnetic hysteresis becomes pronounced at temperatures below T P , which is different from the case shown in Fig.…”

“… M ( H ) hysteresis loop of martensite experimentally recorded at 70 K for the Ni 48 Co 2 Mn 39 Sn 11 alloy. The inset shows the enlarged view of the hysteresis loop within the magnetic field range between −0.5 and +0.5 T .…”

“…Recently, it has been realized that magnetic inhomogeneity, with magnetic clusters distributed in weak magnetic matrix, exists in the martensite of these alloys . Accordingly, superparamagnetic and superspin glass behaviors have been corroborated by both static and dynamic magnetic measurements with different experimental protocols and the magnetic clusters have been directly observed by small‐angle neutron scattering . The elucidation of the superparamagnetic and superspin glass behaviors leads to a breakthrough in understanding the magnetic state of martensite in NiMn‐based multifunctional alloys.…”