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 contributionpeer-review

58 Citations (Scopus)


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
Number of pages11
ISBN (Electronic)9780878493609
Publication statusPublished - 2008

Publication series

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


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


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