Journal ArticleDOI
Noncollinear magnetism in substitutionally disordered face-centered-cubic femn
TLDR
In this article, the magnetic structure of γ-FeMn was studied using the Korringa-Kohn-Rostocker multiple-scattering approach in conjunction with an extension of the single site coherent potential approximation to noncollinear magnetic structures.Abstract:
We use first principles electronic structure techniques to study the magnetic structure of γ-FeMn using the Korringa–Kohn–Rostocker multiple-scattering approach in conjunction with an extension of the single site coherent potential approximation to noncollinear magnetic structures. Our results show that the noncollinear 3Q and 2Q structures are both stable solutions with the former being slightly lower in energy. The collinear solutions could only be converged in a traditional spin-polarized calculation and are unstable in a noncollinear treatment.read more
Citations
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Advances in nanomagnetism via X-ray techniques
George Srajer,Laura H. Lewis,S. D. Bader,A. J. Epstein,Charles S. Fadley,Charles S. Fadley,Eric E. Fullerton,Axel Hoffmann,Jeffrey B. Kortright,Kannan M. Krishnan,Sara A. Majetich,Talat S. Rahman,Caroline A. Ross,M. B. Salamon,Ivan K. Schuller,Thomas C. Schulthess,Jonathan Z. Sun +16 more
TL;DR: In this article, the current status and future directions of the field of nanomagnetism and assesses the ability of hard X-ray synchrotron facilities to provide new capabilities for making advances in this field.
Journal ArticleDOI
Prototypical topological orbital ferromagnet γ-FeMn.
TL;DR: This work predicts from first principles an entirely topological orbital magnetization in the noncoplanar bulk antiferromagnet γ-FeMn originating in the nontrivial topology of the underlying spin structure, without any reference to spin-orbit interaction.
Journal ArticleDOI
First-Principles Study on the Non-Collinear Magnetic Structures of Disordered Alloys
TL;DR: The first principle calculations for FeMn and MnPt alloys both of ordered and disordered phases have been performed with the TB-LMTO method combined with the CPA as discussed by the authors.
Journal ArticleDOI
Structural and magnetic ground-state properties of γ -FeMn alloys from ab initio calculations
Marcus Ekholm,Igor A. Abrikosov +1 more
TL;DR: In this article, various methods for studying solids by simulations of quantummechanical equations, have been applied to transition metals and their alloys, and it is found that the magnetic degrees of freedom are inseparable from the structural, elastic and chemical properties of such alloy systems.
Journal ArticleDOI
Elastic properties of face-centred cubic Fe-Mn-C studied by nanoindentation and ab initio calculations
S. Reeh,Denis Music,T. Gebhardt,M. Kasprzak,Tom Jäpel,Stefan Zaefferer,Dierk Raabe,Silvia Richter,Alexander Schwedt,Joachim Mayer,Burkhard Wietbrock,Gerhard Hirt,Jochen M. Schneider +12 more
TL;DR: In this article, the influence of C and Mn content on the Young's modulus of Fe-Mn-C alloys was studied experimentally and theoretically, and it was shown that C has no significant effect on Youngs modulus within the composition range studied here.
References
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Journal ArticleDOI
Noncollinear magnetism in itinerant-electron systems: Theory and applications
TL;DR: In this article, the present stage of the density functional theory for noncollinear magnetic states and its application to particular physical problems is reviewed and a generalized approach based on the notion of spin space groups is presented which allows a consequent treatment of the symmetry properties of both nonrelativistic and relativistic problems.
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Complete Solution of the Korringa-Kohn-Rostoker Coherent-Potential-Approximation Equations: Cu-Ni Alloys
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Ab initio spin dynamics in magnets.
TL;DR: In this paper, a set of coupled equations of motion for the evaluation of spin dynamics in magnets is introduced, which considers the orientation of the local magnetic moments to be slowly varying relative to their magnitudes.
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Antiferromagnetism of γ Fe-Mn Alloys
TL;DR: In this article, the antiferromagnetism of polycrystalline and single crystal samples of disordered Fe-Mn alloys containing between 20 to 50 at% Mn was investigated by means of a magnetic balance, a sensitive torque magnetometer and neutron diffraction.
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Layer Korringa-Kohn-Rostoker technique for surface and interface electronic properties.
TL;DR: A technique is presented for embedding planar defects such as interfaces or surfaces in an otherwise perfect crystal, in which a solid containing the defect is first partitioned into layers of atoms.