Structural and Thermal Unusual Properties in Invar Behavior of Ni-Mn Alloys

Authors

Ashwaq T. Dahham, Department of Physics, College of Science for Women,University of Baghdad, Baghdad, Iraq
Salih Y. Darweesh, Department of Physics, College of EducationTuzkormato,Tikrit University, IraqFollow
Ismael K. Jassim, Department of Physics, College of Educationand Pure Science, Tikrit University,Iraq.

Abstract

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.

Keywords

Invar effect, Lattice distortion, Magnetic properties, Powder metallurgy, Thermal expansion

Article Type

Special Issue Article

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

T. Dahham, Ashwaq; Y. Darweesh, Salih; and K. Jassim, Ismael (2020) "Structural and Thermal Unusual Properties in Invar Behavior of Ni-Mn Alloys," Baghdad Science Journal: Vol. 17: Iss. 2, Article 32.
DOI: https://doi.org/10.21123/bsj.2020.17.2(SI).0629