Temperature induced phase transformation in Co.

Temperature dependent phase transformation behavior in cobalt from hexagonal close-packed (hcp) to face centered cubic (fcc) has been found to be contradictory to that reported earlier. It is found that hcp phase stabilizes at both low and high temperature ([Formula: see text]873 K) while fcc phase is stabilized at [Formula: see text]500 K. At 298 K, hcp Co has been found to be predominant ([Formula: see text]70%) where hcp magnetic phase is [Formula: see text]60%.