Martensite variant reorientation of NiMnGa/silicone composites containing polystyrene foam particles

Yui Watanabe, Motoki Okuno, Yoshinaka Shimizu, Hiroyasu Kanetaka, Tomonari Inamura, Hideki Hosoda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Effect of elastic modulus of matrix on ferromagnetic motion of NiMnGa particles was investigated for NiMnGa particles embedded silicone matrix composites with or without containing polystyrene form particles (PFPs), which are regarded as pores. NiMnGa single crystal was fabricated by a floating zone method and a cube-shape particle was fabricated with the surface orientation parallel to [100], [010] and [001] directions at the parent phase state. The elastic modulus of matrix polymer was controlled by changing the number of PFPs. It was found that the elastic modulus of silicone was decreased with increasing the volume fraction of PFPs. The magnetic-field-induced martensite variant reorientation (MVR) was evaluated by the magnetization curves obtained using a vibration sample magnetometer, and the magnetic field required for the start of martensite variant reorientation was reduced by increasing the number of PFPs. The control of elastic modulus of matrix polymer is important and a dominant factor for the magnetic motion of NiMnGa/polymer composites.

Original languageEnglish
Title of host publicationTHERMEC 2011 Supplement
Pages645-650
Number of pages6
DOIs
Publication statusPublished - 2012 Jan 4
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
Duration: 2011 Aug 12011 Aug 5

Publication series

NameAdvanced Materials Research
Volume409
ISSN (Print)1022-6680

Other

Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
CountryCanada
CityQuebec City, QC
Period11/8/111/8/5

Keywords

  • Ferromagnetic shape memory alloys (FSMA)
  • Martensite
  • Martensite variant reorientation
  • NiMnGa
  • Polymer composite
  • Polystyrene

ASJC Scopus subject areas

  • Engineering(all)

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