ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
X-ray powder diffraction and magnetization measurements were done on the magneticshape memory alloys Ni2Mn1+xSn1-x. The alloys with 0≤x≾0.4 crystallize in the cubic L21 structureand exhibit the ferromagnetic behavior. X-ray diffraction patterns indicate that the excess Mn atomsoccupy the Sn sites. Furthermore, magnetization measurements make clear that the Mn atoms,which substitute for Sn sites, are coupled antiferromagnetically to the ferromagnetic manganesesublattices. The alloys with 0.4≾x≤0.6 undergo a martensitic transition from the high temperatureL21 structure to the orthorhombic 4O one. These alloys show a variety of magnetic transitions. Amagnetic phase diagram of Ni2Mn1+xSn1-x system is discussed qualitatively on the basis of theinteratomic dependence of the exchange interactions
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.583.119.pdf
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