The metastable α″-Fe16N2 phase may have a magnetic moment up to 50% higher than that of pure bulk α-Fe. This article addresses the following issues. (i) Can epitaxial films of α″-Fe16N2 be prepared phase pure? Yes, but there are some doubts. (ii) Can powders of α″-Fe16N2 be prepared phase pure? Not yet. (iii) Is the Mössbauer spectrum due to α″-Fe16N2, to martensite, or to something else? Most assign it to α″-Fe16N2. (iv) What is the specific saturation magnetic moment of α″-Fe16N2? Some claim it is close to that of α-Fe, most claim that it is much larger. (v) Is the high moment due to α″-Fe16N2, or to some other phase?
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.