2025/02/15 by Ananya Sahoo, Ayusa Aparupa Biswal, Sahoo, Ananya +17
Engineering · Materials Science · #FOS: Physical sciences #Induction Heating and Inverter Technology #Magnetic Properties and Applications #Microstructure and Mechanical Properties of Steels #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.2502.10757
openalex publication_date 2025/02/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The structural and magnetic properties of Fe1-xNix~(x = 0.32, 0.36, 0.40, 0.50) alloys have been investigated using synchrotron based x-ray diffraction (XRD) technique with x-rays of wavelength 0.63658 Å down to 50 K temperature, magnetic measurement using superconducting quantum interference device (SQUID) magnetometer and high resolution x-ray photoelectron spectroscopy (XPS) with monochromatic AlKα radiation. The XRD studies suggest a single phase with fcc structure for x = 0.36, 0.40, and 0.50 ~alloys and a mixed phase for x = 0.32 alloy containing both bcc and fcc structures. The lattice parameter of the alloys exhibits a linear dependence on temperature giving rise to a temperature independent coefficient of thermal expansion (CTE). The lowest CTE is observed for x = 0.36 Invar alloy as expected while x = 0.50 alloy exhibits the highest CTE among the alloys studied. The CTE of the fcc component of mixed phase alloy is close to that of Invar alloy. The temperature dependence of magnetization of the alloys down to 2 K reveals an overall antiferromagnetic interactions within the ferromagnetic phase causing the magnetization decreasing with cooling. The field cooled and zero field cooled data show larger differences for the Invar compositions; this is also manifested in the magnetic hysteresis data at 2 K and 300 K.