Controlling Twin Variant Configuration in a Constrained Ni–Mn–Ga Sample Using Local Magnetic Fields

Aaron Smith, Juhani Tellinen, Peter Mullner, Kari Ullakko

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Traditionally, a uniform magnetic field is applied to a bulk sample of Ni–Mn–Ga. In this study, it is shown that local twinning can be created at a specific location with the use of a focused magnetic field in a constrained Ni–Mn–Ga sample. Image processing indicates that the twin volume fraction remains consistent throughout the process. Magnetic flux modelling illustrates the focused magnetic field as it permeates through the sample before and after the local twinning.

Original languageAmerican English
Pages (from-to)68-70
Number of pages3
JournalScripta Materialia
Volume77
DOIs
StatePublished - 15 Apr 2014

Keywords

  • Ferromagnetic shape memory alloy
  • Heusler phases
  • Magnetic shape memory
  • Magnetic structure
  • Twinning

EGS Disciplines

  • Materials Science and Engineering

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