Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window

Abstract

An effective scheme of isostructural alloying was applied to establish a Curie-temperature window in isostructural MnNiGe-CoNiGe system. With the simultaneous accomplishment of decreasing structural-transition temperature and converting antiferromagnetic martensite to ferromagnetic state, a 200 K Curie-temperature window was established between Curie temperatures of austenite and martensite phases. In the window, a first-order magnetostructural transition between paramagnetic austenite and ferromagnetic martensite occurs with a sharp jump in magnetization, showing a magnetic entropy change as large as -40 J kg-1 K-1 in a 50 kOe field change. This giant magnetocaloric effect enables Mn1-xCoxNiGe to become a potential magnetic refrigerant.

21 pages, 6 figures, 1 table, accepted by APL

References in corpus (7)

• Inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn alloys
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• Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window
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• Phase diagram and magnetocaloric effect of CoMnGe_{1-x}Sn_{x} alloys
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Cited by in corpus (11)

• Giant magnetocaloric effect in isostructural MnNiGe-CoNiGe system by establishing a Curie-temperature window
• Unprecedentedly Wide Curie-Temperature Windows as Phase-Transition Design Platform for Tunable Magneto-Multifunctional Materials
• First-principles investigation of half-metallic ferromagnetism of half-Heusler compounds XYZ
• 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
• Windows open for highly tunable magnetostructural phase transitions
• Design of reversible low-field magnetocaloric effect at room temperature in hexagonal MnMX ferromagnets
• Structural and magnetic properties of MnCo1-xFexSi alloys
• First order magneto-structural transition and magnetocaloric effect in MnNiGe${}_{0.9}$Ga${}_{0.1}$
• Tunable anomalous Hall and Nernst effects in MM'X compounds
• Two successive magneto-structural transformations and their relation to enhanced magnetocaloric effect for Ni55.3Mn19.7Ga25 Heusler alloy