Magnetostructural Transformation and Magnetoresponsive Properties of MnNiGe1-xSnx Alloys

Abstract

The martensitic and magnetic phase transformations in MnNiGe1-xSnx (0 \leq x \leq 0.200) alloys were investigated using X-ray diffraction (XRD), differential thermal analysis (DTA) and magnetization measurements. Results indicate that the increasing Sn substitution in MnNiGe1-xSnx results in (i) decrease of martensitic transformation temperature from 460 to 100 K and (ii) conversion of AFM spiral to antiparallel AFM strcuture in martensite. Based on these, the remarkable magnetic-field-induced PM/spiral-AFM and FM/AFM magnetostructural transformations and, large positive and negative magnetocaloric effects are obtained. The magnetoresponsive effects of MnNiGe1-xSnx alloys are enhanced by Sn substitution. A structural and magnetic phase diagram of MnNiGe1-xSnx alloys has been proposed.

arXiv comment3 pages and 4 figures

References in corpus (3)

• Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal phase-transition ferromagnets
• Vacancy-tuned paramagnetic/ferromagnetic martensitic transformation in Mn-poor Mn_{1-x}CoGe alloys
• Phase diagram and magnetocaloric effect of CoMnGe_{1-x}Sn_{x} alloys

Cited by in corpus (7)

• Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal phase-transition ferromagnets
• Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window
• Phase diagram, ferromagnetic martensitic transformation and magnetoresponsive properties of Fe-doped MnCoGe alloys
• Structural transitions, magnetic properties, and electronic structures of Co(Fe)-doped MnNiSi compounds
• A coupling of martensitic and metamagnetic transitions with collective magneto-volume and table-like magnetocaloric effects
• First order magneto-structural transition and magnetocaloric effect in MnNiGe${}_{0.9}$Ga${}_{0.1}$
• Large barocaloric effect with high pressure-driving efficiency in hexagonal MnNi0.77Fe0.23Ge alloy