Realization of multifunctional shape-memory ferromagnets in all-d-metal Heusler phases

Abstract

Heusler ferromagnetic shape-memory alloys (FSMAs) normally consist of transition-group d-metals and main-group p-elements. Here, we report the realization of FSMAs in Heusler phases that completely consist of d metals. By introducing the d-metal Ti into NiMn alloys, cubic B2-type Heusler phase is obtained and the martensitic transformation temperature is decreased efficiently. Strong ferromagnetism is established by further doping Co atoms into the B2-type antiferromagnetic Ni-Mn-Ti austenite. Based on the magnetic-field-induced martensitic transformations, collective multifunctional properties are observed in Ni(Co)-Mn-Ti alloys. The d metals not only facilitate the formation of B2-type Heusler phases, but also establish strong ferromagnetic coupling and offer the possibility to tune the martensitic transformation.

15 pages, 4 figs. Accepted by APL

References in corpus (5)

• Magnetic superelasticity and inverse magnetocaloric effect in Ni-Mn-In
• Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal phase-transition ferromagnets
• Large exchange bias after zero-field cooling from an unmagnetized state
• Design of compensated ferrimagnetic Heusler alloys for giant tunable exchange bias
• Shape memory ferromagnets

Cited by in corpus (7)

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• Tailoring magnetocaloric effect in all-d-metal Ni-Co-Mn-Ti Heusler alloys: a combined experimental and theoretical study
• A matter of performance & criticality: a review of rare-earth-based magnetocaloric intermetallic compounds for hydrogen liquefaction
• Dissipation losses limiting first-order phase transition materials in cryogenic caloric cooling: A case study on all-d-metal Ni(-Co)-Mn-Ti Heusler alloys
• Exploration of all-3d Heusler alloys for permanent magnets: an ab initio based high-throughput study
• Observation of atomically displacive transformation out of the boundary-reconstructive phase competition
• Ferromagnetic Cr4PtGa17: A Novel Half-Heusler-Type Compound with a Breathing Pyrochlore Lattice