The half-metallicity and the stability of the ferromagnetic state have been investigated in the Heusler type alloys (Fe1 xCox)2CrZ (Z 1⁄4 s, p elements). If only the ferromagnetic state is assumed as the magnetic state of Fe2CrZ, the half-metallicity tends to appear easily as the total number of the valence electrons and the lattice constant decrease. Taking the paramagnetic and the antiferroma...

The electron spin polarization (ESP) at surfaces of bulk and thin film ferromagnetic materials has been investigated using electron capture spectroscopy (ECS), which probes the ESP of the topmost surface layer. At surfaces of PtMnSb, Tb and Fe,,B,,, we find nonhero ESP due to long-ranged or short-ranged ferromagnetic order. The sign of the ESP at surfaces of the Heusler alloy PtMnSb is in agree...

Related Articles Electronic origin of the negligible magnetostriction of an electric steel Fe1-xSix alloy: A density-functional study J. Appl. Phys. 111, 063911 (2012) Modeling plastic deformation effect on magnetization in ferromagnetic materials J. Appl. Phys. 111, 063909 (2012) Magnetic and calorimetric studies of magnetocaloric effect in La0.7-xPrxCa0.3MnO3 J. Appl. Phys. 111, 07D726 (2012)...

We compare predictions of the mean-field theory of superconductivity for nearly antiferromagnetic and nearly ferromagnetic metals in two dimensions. The calculations are based on a parametrization of the effective interaction arising from the exchange of magnetic fluctuations. The Eliashberg equations for the transition temperature are solved including the full momentum dependence of the electr...

This paper is devoted to the study of a fully discrete T -ψ finite element method based on H-decomposition to solve a nonlinear degenerate transient eddy current problem with ferromagnetic materials. Here, the ferromagnetic properties are linked by a power material law. We first design a nonlinear time-discrete scheme for approximation in suitable function spaces. We show the well-posedness of ...

We have made an experimental study of the tunneling density of states (DOS) in strong ferromagnetic thin films (CoFe) in proximity with a thick superconducting film (Nb) as a function of dF , the ferromagnetic thickness. Remarkably, we find that as dF increases, the superconducting DOS exhibits a scaling behavior in which the deviations from the normal-state conductance have a universal shape t...

Related Articles Electronic origin of the negligible magnetostriction of an electric steel Fe1-xSix alloy: A density-functional study J. Appl. Phys. 111, 063911 (2012) Modeling plastic deformation effect on magnetization in ferromagnetic materials J. Appl. Phys. 111, 063909 (2012) Magnetic and calorimetric studies of magnetocaloric effect in La0.7-xPrxCa0.3MnO3 J. Appl. Phys. 111, 07D726 (2012)...

Oxide heterostructures often exhibit unusual physical properties that are absent in the constituent bulk materials. Here, we report an atomically sharp transition to a ferromagnetic phase when polar antiferromagnetic LaMnO3 (001) films are grown on SrTiO3 substrates. For a thickness of six unit cells or more, the LaMnO3 film abruptly becomes ferromagnetic over its entire area, which is visualiz...

The research on flux line lattices and pancake vortices in superconducting materials, carried out within a long and fruitful collaboration with Akira Tonomura and his group at the Hitachi Advanced Research Laboratory, led us to develop a mathematical framework, based on the reciprocal representation of the magnetic vector potential, that enables us to simulate realistic phase images of fluxons....

Half-metallicity in materials has been a subject of extensive research due to its potential for applications in spintronics. Ferromagnetic manganites have been seen as a good candidate, and aside from a small minority-spin pocket observed in La(2-2x)Sr(1+2x)Mn(2)O(7) (x = 0.38), transport measurements show that ferromagnetic manganites essentially behave like half metals. Here we develop robust...