G. M. Stocks

The “disordered local moment” picture of itinerant magnetism at finite temperatures

Abstract With an emphasis upon a realistic description of the underlying electronic structure, we discuss the “Disordered Local Moment” (DLM) picture of metallic magnetism. Its formulation, based upon “first principles” foundations of the Spin Density Functional Approach is briefly derived. Within the context of this theory, we place our previous, self-consistent calculations of local moments in the paramagnetic state for several transition metals and describe some details of the electronic structure which may ultimately be compared with modern experimental measurements. Finally the theory and physical picture for the wave-vector dependent, static spin susceptibility, χ ( q , T ) above the Curie temperature, T c , is outlined and the degree of short range magnetic order driven by the DLM electronic structure estimated. We illustrated the theory by explicit calculations for iron and preliminary calculations for nickel. Curie-Weiss behaviour is found for χ(0; T ) of both metals and Curie temperatures are 1260 K for iron and 225 K for nickel. While the calculations for χ( q ; T ) are broadly consistent with the initially imposed DLM state, their interpretation for nickel is rather different from that of iron. A comparison with quasi-elastic neutron scattering measurements is briefly made.

Electronic structure and ionicity of actinide oxides from first principles

The ground-state electronic structures of the actinide oxides

Tailoring the physical properties of Ni-based single-phase equiatomic alloys by modifying the chemical complexity

A\text{O}

The effect of Ta on the magnetic thickness of permalloy (Ni81Fe19) films

,

Thermal conductance modulator based on folded graphene nanoribbons

{A}_{2}{\text{O}}_{3}

NONCOLLINEAR MAGNETISM IN SUBSTITUTIONALLY DISORDERED FACE-CENTERED-CUBIC FEMN

, and

Equilibrium structure and properties of surfaces and interfaces

A{\text{O}}_{2}

Electronic states in Ag-Pd alloys

(

Ab initio Study of Charge Order in Fe3O4

A=\text{U}

Noncollinear magnetic structure in Ni0.35Fe0.65

, Np, Pu, Am, Cm, Bk, and Cf) are determined from first-principles calculations, using the self-interaction corrected local spin-density approximation. Emphasis is put on the degree of