Study of Structural Evolution and Magnetic Behavior of Ni50Mn45Sn5 Alloy

Author(s) Dinesh Saini1, Satyavir Singh1, MK Banerjee2,3, K. Sachdev1,3

1 Department of Physics, Malaviya National Institute of Technology Jaipur-302017, India

2 Department of Metallurgical & Materials Engineering, Malaviya National Institute of Technology, Jaipur-302017, India

3 Materials Research Centre, Malaviya National Institute of Technology Jaipur-302017, India

Issue Volume 9, Year 2017, Number 3
Dates Received 02 February 2017; published online 30 June 2017
Citation Dinesh Saini, Satyavir Singh, MK Banerjee, K. Sachdev, J. Nano- Electron. Phys. 9 No 3, 03025 (2017)
DOI 10.21272/jnep.9(3).03025
PACS Number(s) 81.05.Bx
Key words Alloy Ni50Mn45Sn5, Structural evolution, Magnetic properties (7) .
Annotation In this investigation, Ni50Mn45Sn5 alloy powder is synthesized by employing mechanical alloying technique in a high energy planetary ball mill. Systematic study on microstructural evolution and magnetic properties after different milling time is conducted by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and Vibrating Sample Magnetometer (VSM). It is revealed that formation of single phase alloy with an average of ~ 7 nm crystallite size is achieved after 20 hr milling by mechanically induced inter-diffusion of atoms. Moreover, changes in lattice parameters and lattice strain as a function of milling time is also studied. Change in morphology of particles with increasing milling time has been studied by SEM. In addition, d-spacing and diffraction planes obtained from analysis of HRTEM image and SAD pattern respectively corroborate with XRD results. Low coercivity indicated by hysteresis loop is suggestive of soft ferromagnetic behavior of the alloy powder.