Magnetic and crystallographic properties of shape memory alloys Ni 2Mn1+xSn1-x

T. Kanomata, K. Fukushima, H. Nishihara, R. Kainuma, W. Itoh, K. Oikawa, K. Ishida, K. U. Neumann, K. R.A. Ziebeck

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

50 Citations (Scopus)

Abstract

X-ray powder diffraction and magnetization measurements were done on the magnetic shape memory alloys Ni2Mn1+xSn1-x. The alloys with 0≤x≲0.4 crystallize in the cubic L21 structure and exhibit the ferromagnetic behavior. X-ray diffraction patterns indicate that the excess Mn atoms occupy the Sn sites. Furthermore, magnetization measurements make clear that the Mn atoms, which substitute for Sn sites, are coupled antiferromagnetically to the ferromagnetic manganese sublattices. The alloys with 0.4≲x≤0.6 undergo a martensitic transition from the high temperature L21 structure to the orthorhombic 4O one. These alloys show a variety of magnetic transitions. A magnetic phase diagram of Ni 2Mn1+xSn1-x system is discussed qualitatively on the basis of the interatomic dependence of the exchange interactions.

Original languageEnglish
Title of host publicationMaterials Science Forum - Advances in Shape Memory Materials
Subtitle of host publicationMagnetic Shape Memory Alloys
PublisherTrans Tech Publications Ltd
Pages119-129
Number of pages11
ISBN (Electronic)978-0-87849-360-9
Publication statusPublished - 2008 Jan 1

Publication series

NameMaterials Science Forum
Volume583
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Keywords

  • Crystal structure
  • Heusler alloy
  • Magnetic moment
  • Phase transition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Magnetic and crystallographic properties of shape memory alloys Ni <sub>2</sub>Mn<sub>1+x</sub>Sn<sub>1-x</sub>'. Together they form a unique fingerprint.

Cite this