The magnetic structure of MnF2 is determined by the neutron diffraction method in the metastable orthorhombic phase grown in the form of thin (similar to 1 mu m) film on a CaF2 buffer layer by the molecular beam epitaxy method. The magnetic moments of Mn++ form a simple two-sublattice antiferromagnetic structure and are directed along the c crystallographic axis parallel to the film plane. Using the temperature dependence of magnetic reflections, a Neel temperature of 67.19(7) K and a critical index of 0.50(2), which corresponds to the mean field approximation, are determined.
Magnetic order in an MnF2 epitaxial layer with the orthorhombic structure
Nannarone S
2006
Abstract
The magnetic structure of MnF2 is determined by the neutron diffraction method in the metastable orthorhombic phase grown in the form of thin (similar to 1 mu m) film on a CaF2 buffer layer by the molecular beam epitaxy method. The magnetic moments of Mn++ form a simple two-sublattice antiferromagnetic structure and are directed along the c crystallographic axis parallel to the film plane. Using the temperature dependence of magnetic reflections, a Neel temperature of 67.19(7) K and a critical index of 0.50(2), which corresponds to the mean field approximation, are determined.File in questo prodotto:
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