Giant low-field magnetocaloric effect in Si alloyed Ni-Co-Mn-In alloys

Giant Magnetoresistance and Magnetocaloric Effect in Highly Textured Ni45Mn36.5In13.5Co5 Alloys

“…[ 19 ] A similar behavior has been usually found in Ni–Co–Mn–In with similar compositions. [ 20–24 ] On heating, the magnetization suddenly increases near the austenitic starting temperature (), and then it returns to the peak value at the austenitic finishing temperature (), implying that it experiences a reverse MT. According to the M–T curves, the characteristic temperatures of the phase transition under different magnetic fields are summarized in Table 1 .…”

Recent Progress in Crystallographic Characterization, Magnetoresponsive and Elastocaloric Effects of Ni-Mn-In-Based Heusler Alloys—A Review

“…For the Co-doped NiCoMnIn alloys, compared with ternary NiMnIn alloys, the negative contribution of ΔS mag to ΔS tr is more pronounced as the addition of Co greatly enhances the magnetism of austenite and then the value of ΔM (Li et al, 2019a;Yang et al, 2020). The strategy of weakening ΔS mag in the NiCoMnIn alloy is the same as that of NiMnIn, i.e., elevating T M to make it close to T A C by doping a fifth alien element, such as Cu (Li et al, 2019b;Yan et al, 2021a;Huang et al, 2021), Fe (Chen et al, 2012), Ga (Paramanik and Das, 2016), Pd (Li et al, 2015).…”

“…Different from mechanical properties that are strongly dependent on microstructure, T M belongs to the inherent property of materials and thus is mainly determined by the chemical composition. Aimed at reducing ΔS mag by tailoring T M , for the ternary NiMnIn alloys, several alloying methods including changing relative contents of different elements of the alloy and adding the fourth alien elements, such as Cu (Li et al, 2019a;Yan et al, 2021a;Huang et al, 2021), Cr (Sharma et al, 2010a;Sharma et al, 2011), Fe (Chen et al, 2012;Feng et al, 2012), Ga (Paramanik and Das, 2016) and Pd (Li et al, 2015), have been utilized. For instance, under the guidance of valence electron concentration (e/a) criteria of T M , i.e., a larger e/a corresponds to a higher T M (Wei et al, 2016), Feng et al elevated T M of Ni 50 Mn 34 In 16 from 250 K to 303 K via the partial substitution of a low valence electron number (VEN) element of In (5s 2 p 1 , VEN = 3) by a high VEN element of Fe (3d 6 4s 2 , VEN = 8) (Feng et al, 2012).…”

Viable Materials with a Giant Magnetocaloric Effect

“…Ni-Mn-Ga alloys [169,213,253] contain expensive Ga. Mn-Fe-Ge [287], Mn-Ni-Ge [121] and Mn-Co-Ge [116,129,168,173,178,182] contain critical Ge [231]; these alloys can be doped with In [141], Si [159] and Fe [111,120,142]; Ge was successfully substituted by (Si,Al) [31]. Magnetic shape memory alloys [148,204] include Ni-Mn-In [167,175,192,261,283] doped with Co [136,172,241] and Si [122]; Ni-Mn-Sn [115,226]; NiMn-based B2 (Ni-Co)(Mn-Ti) [30], Ni-Co-Mn-Al films [189,190] [293], and metallic glasses [274]. Significant interest was devoted to the potentially viable LaFe 13−x Si x [137,200,284,288,290,292], doped with Co [249] and other additives [35], or partially hydrated [52][53]…”