Open Access
Ferromagnetic materials
TLDR
In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.Abstract:
In this chapter, we will restrict our attention to the ferrites and a few other closely related materials. The great interest in ferrites stems from their unique combination of a spontaneous magnetization and a high electrical resistivity. The observed magnetization results from the difference in the magnetizations of two non-equivalent sub-lattices of the magnetic ions in the crystal structure. Materials of this type should strictly be designated as “ferrimagnetic” and in some respects are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present. We shall not adhere to this special nomenclature except to emphasize effects, which are due to the existence of the sub-lattices.read more
Citations
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Journal ArticleDOI
Large magnetic‐field‐induced strains in Ni2MnGa single crystals
TL;DR: In this paper, the superelastic motion of twin boundaries in the martensitic phase of Ni2MnGa with magnetic fields of 8 kOe applied at 265 K was found to be associated with the staining.
Journal ArticleDOI
Electronic structure calculations with dynamical mean-field theory
Gabriel Kotliar,Sergey Y. Savrasov,Kristjan Haule,V. S. Oudovenko,Olivier Parcollet,Chris A. Marianetti +5 more
TL;DR: In this article, a review of the basic ideas and techniques of spectral density functional theory which are currently used in electronic structure calculations of strongly correlated materials where the one-dimensional electron description breaks down is presented.
Journal Article
Perpendicular switching of a single ferromagnetic layer induced by in-plane current injection
Kevin Garello,Ioan Mihai Miron,Gilles Gaudin,Pierre-Jean Zermatten,Marius V. Costache,Stéphane Auffret,Sebastien Bandera,B. Rodmacq,Alain Schuhl,Pietro Gambardella +9 more
TL;DR: In this article, the authors demonstrate switching of a perpendicularly magnetized cobalt dot driven by in-plane current injection at room temperature, which is composed of a thin cobalt layer with strong perpendicular magnetic anisotropy and Rashba interaction induced by asymmetric platinum and AlOx interface layers.
Journal ArticleDOI
Spin transfer torques
Daniel C. Ralph,Mark D. Stiles +1 more
TL;DR: In this paper, the physics of spin transfer torque in magnetic devices are discussed and an elementary discussion of the mechanism and experimental progress in this field is provided, along with a review of theoretical and experimental results.
Journal ArticleDOI
Reflection-free one-way edge modes in a gyromagnetic photonic crystal.
TL;DR: It is shown that the TM modes in a gyromagnetic photonic crystal can be formally mapped to electronic wave functions in a periodic electromagnetic field, so that the only requirement for the existence of one-way edge modes is that the Chern number for all bands below a gap is nonzero.
References
More filters
Journal ArticleDOI
Large magnetic‐field‐induced strains in Ni2MnGa single crystals
TL;DR: In this paper, the superelastic motion of twin boundaries in the martensitic phase of Ni2MnGa with magnetic fields of 8 kOe applied at 265 K was found to be associated with the staining.
Journal ArticleDOI
Electronic structure calculations with dynamical mean-field theory
Gabriel Kotliar,Sergey Y. Savrasov,Kristjan Haule,V. S. Oudovenko,Olivier Parcollet,Chris A. Marianetti +5 more
TL;DR: In this article, a review of the basic ideas and techniques of spectral density functional theory which are currently used in electronic structure calculations of strongly correlated materials where the one-dimensional electron description breaks down is presented.
Journal Article
Perpendicular switching of a single ferromagnetic layer induced by in-plane current injection
Kevin Garello,Ioan Mihai Miron,Gilles Gaudin,Pierre-Jean Zermatten,Marius V. Costache,Stéphane Auffret,Sebastien Bandera,B. Rodmacq,Alain Schuhl,Pietro Gambardella +9 more
TL;DR: In this article, the authors demonstrate switching of a perpendicularly magnetized cobalt dot driven by in-plane current injection at room temperature, which is composed of a thin cobalt layer with strong perpendicular magnetic anisotropy and Rashba interaction induced by asymmetric platinum and AlOx interface layers.
Journal ArticleDOI
Spin transfer torques
Daniel C. Ralph,Mark D. Stiles +1 more
TL;DR: In this paper, the physics of spin transfer torque in magnetic devices are discussed and an elementary discussion of the mechanism and experimental progress in this field is provided, along with a review of theoretical and experimental results.