Shape memory ferromagnets

Abstract

In ferromagnetic alloys with shape memory large reversible strains can be obtained by rearranging the martensitic domain structure by a magnetic field. Magnetization through displacement of domain walls is possible in the presence of high magnetocrystalline anisotropy, when martensitic structure rearrangement is energetically favorable compared to the reorientation of magnetic moments. In ferromagnetic Heusler alloys Ni${}_{2+x}$Mn${}_{1-x}$Ga the Curie temperature exceeds the martensitic transformation temperature. The fact that these two temperatures are close to room temperature offers the possibility of magnetically controlling the shape and size of ferromagnets in the martensitic state. In Ni${}_{2+x}$Mn${}_{1-x}$Ga single crystals, a reversible strain of $\sim 6$% is obtained in fields of $\sim 1$ T.

review on ferromagnetic shape memory alloys (FSMAs)

References in corpus (1)

• Magnetic properties of Ni2.18Mn0.82Ga Heusler alloys with a coupled magnetostructural transition

Cited by in corpus (18)

• Realization of multifunctional shape-memory ferromagnets in all-d-metal Heusler phases
• Phase transitions in Ni2+xMn1-xGa with a high Ni excess
• Half-metallic Ferromagnets, Spin Gapless Semiconductors, and Topological Semimetals Based on Heusler Alloys
• Local Atomic Structure of Martensitic Ni${}_{2+x}$Mn${}_{1-x}$Ga: An EXAFS Study
• Factors influencing the Martensitic interactions in Ni50Mn35Sn15: An EXAFS study
• Editorial Comment on the Special Issue of "Information in Dynamical Systems and Complex Systems"
• Influence of intermartensitic transitions on transport properties of Ni2.16Mn0.84Ga alloy
• Origin of magnetic interactions and their influence on the structural properties of Ni2MnGa and related compounds
• Correlation effects on ground-state properties of ternary Heusler alloys: first-principles study
• Anomalous Magnetic Properties in Ni50Mn35In15
• A coupling of martensitic and metamagnetic transitions with collective magneto-volume and table-like magnetocaloric effects
• Unusual kinetic properties of usual Heusler alloys
• Electronic structure beyond the generalized gradient approximation for Ni${}_2$MnGa
• Strain and order-parameter coupling in Ni-Mn-Ga Heusler alloys from resonant ultrasound spectroscopy
• Enhanced metamagnetic shape memory effect in Heusler-type Ni37Co11Mn43Sn9 polycrystalline ferromagnetic shape memory alloy
• Magnetic interactions in the Martensitic phase of Mn rich Ni-Mn-In shape memory alloys
• A two dimensional model for ferromagnetic martensites
• Magnetic phase diagram of the austenitic Mn-rich Ni-Mn-(In,Sn) Heusler alloys