Magnetism in Iron-Zirconium Systems

Magnetism in dense hexagonal iron.

The magnetic state of hexagonal close-packed iron has been the subject of debate for more than three decades. Although Mössbauer measurements find no evidence of the hyperfine splitting that can signal the presence of magnetic moments, density functional theory predicts an antiferromagnetic (afm) ground state. This discrepancy between theory and experiment is now particularly important because ...

On the magnetism of iron in chromium

2014 The magnetic properties of iron in chromium and in chromium rich alloys are tentatively interpreted in terms of a local coupling with the spin modulation of the matrix. The Curie Weiss behaviour of isolated iron atoms in the transversal uncommensurate phase is related to possible long range distortions of the spin modulation due to the thermal motion of the iron moments. This motion is fro...

Magnetism and charge dynamics in iron pnictides

Unconventional superconductivity occurs in close proximity to a magnetically ordered state in many materials1,2. Uncovering the character of the proximate magnetic phase is a crucial step towards understanding the mechanism of superconductivity. Unlike the case in the cuprate superconductors, the nature of the magnetism and its underlying electronic state in the iron pnictide superconductors3 i...

Surface magnetism in iron, cobalt, and nickel.

Magnetism, iron minerals, and life on Mars.

A short critical review is provided on two questions linking magnetism and possible early life on Mars: (1) Did Mars have an Earth-like internal magnetic field, and, if so, during which period and was it a requisite for life? (2) Is there a connection between iron minerals in the martian regolith and life? We also discuss the possible astrobiological implications of magnetic measurements at the...