Open AccessStructural and Thermal Unusual Properties in Invar Behavior of Ni-Mn Alloys
Author(s) -
Salih Y. Darweesh
Publication year - 2020
Publication title -
mağallaẗ baġdād li-l-ʿulūm
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.167
H-Index - 6
eISSN - 2411-7986
pISSN - 2078-8665
DOI - 10.21123/bsj.2020.17.2(si).0629
Subject(s) - invar , thermal expansion , materials science , ferromagnetism , magnetometer , spins , condensed matter physics , thermal , diffraction , negative thermal expansion , metallurgy , thermodynamics , magnetic field , optics , physics , quantum mechanics
The Invar effect in 3D transition metal such as Ni and Mn, were prepared on a series composition of binary Ni1-xMnx system with x=0.3, 0.5, 0.8 by using powder metallurgy technique. In this work, the characterization of structural and thermal properties have been investigated experimentally by X-ray diffraction, thermal expansion coefficient and vibrating sample magnetometer (VSM) techniques. The results show that anonymously negative thermal expansion coefficient are changeable in the structure. The results were explained due to the instability relation between magnetic spins with lattice distortion on some of ferromagnetic metals.