Abstract
Results of ambient temperature synchrotron based in-situ x-ray powder diffraction measurements up to 24.8 GPa on the structural stability of the ferromagnetic shape memory Heusler alloy Co2FeSi is reported. The compound is structurally stable up to the highest pressure of the present investigations; however, the pressure (P) vs. volume (V) data shows an anomalous linearity beyond 4.7 GPa. The P-V data up to 4.7 GPa, when fitted to Birch-Murnaghan equation of states, gives the value of bulk modulus (B) as 240 GPa (B′ = 4). The P-V data beyond 4.7 GPa can be fitted to a straight line implying a constant bulk modulus (B = 279.5 GPa, B′ = 0.0) as seen in several metallic samples with highly correlated electrons.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
