Phase diagrams of Kondo alloys

Phase Diagrams of Fe-Si Alloys under High Pressures

Introduction Iron is the most abundant element in the Earth’s core. However, the density of the outer core is about 10% lower than the density of iron at the pressure and temperature conditions of the outer core, indicating the presence of a low-atomic-weight component (such as H, C, O, Si, or S) in the core [1]. There is also evidence that the inner core may be less dense than pure iron and th...

Lifshitz transition in Kondo alloys.

We study the low-energy states of Kondo alloys as a function of the magnetic impurity concentration per site x and the conduction electron average site occupation n(c). Using two complementary approaches, the mean-field coherent potential approximation and the strong-coupling limit, we identify and characterize two different Fermi-liquid regimes. We propose that both regimes are separated by a ...

Elastic properties and magnetic phase diagrams of dense Kondo compound Ce0.75La0.25B6

We have investigated the elastic properties of the cubic dense Kondo compound Ce0.75La0.25B6 by means of ultrasonic measurements. We have obtained magnetic fields vs. temperatures (H−T ) phase diagrams under magnetic fields along the crystallographic [001], [110] and [111] axes. An ordered phase IV showing the elastic softening of c44 locates in low temperature region between 1.6 K and 1.1 K be...

Ab Initio Construction of Magnetic Phase Diagrams in Alloys: The Case of Fe1â‹TMxMnxPt

The effect of lattice stability determination on the computational phase diagrams of intermetallic alloys

The evaluation of lattice stabilities of unstable elemental phases is a long-standing problem in the computational assessment of phase diagrams. Here we tackle this problem by explicitly calculating phase diagrams of intermetallic systems where its effect should be most conspicuous, binary systems of titanium with bcc transition metals. Two types of phase diagrams are constructed: one based on ...