Ezio Bruno

Temperature dependent magnetic anisotropy in metallic magnets from an ab initio electronic structure theory: L1(0)-ordered FePt.

Using a first-principles, relativistic electronic structure theory of finite temperature metallic magnetism, we investigate the variation of magnetic anisotropy K with magnetization M in metallic ferromagnets. We apply the theory to the high uniaxial K material, L1(0)-ordered FePt, and find its magnetic easy axis perpendicular to the Fe/Pt layers for all M and K to be proportional to M2 for a broad range of values of M. For small M, near the Curie temperature, the calculations pick out the easy axis for the onset of magnetic order. Our ab initio results for this important magnetic material agree well with recent experimental measurements, whereas the single-ion anisotropy model fails to give the correct qualitative behavior.

Fermi surface nesting and charge-density wave formation in rare-earth tritellurides

The Fermi surface of rare-earth tritellurides

Magnetocrystalline anisotropy and compositional order in Fe0.5Pt0.5: Calculations from an ab initio electronic model

(R{\mathrm{Te}}_{3})

Effects of short-range order on the electronic structure of disordered metallic systems

is investigated in terms of the nesting-driven charge-density wave formation using positron annihilation and first-principles linear muffin-tin orbital calculations. Fermi surface nesting is revealed as a strong candidate for driving charge-density wave formation in these compounds. The nesting vector obtained from positron annihilation experiments on

An ab-initio theoretical investigation of the soft-magnetic properties of permalloys

{\mathrm{GdTe}}_{3}

Fermi surface origin of non-stoichiometric ordering in CuPd alloys

is determined to be

Coarse-grained density functional theories for metallic alloys: Generalized coherent-potential approximations and charge-excess functional theory

\mathbf{q}=(0.28\ifmmode\pm\else\textpm\fi{}0.02,0,0){\mathbf{a}}^{*}

ZrZn 2 : Geometrical enhancement of the local density of states and quantum design of magnetic instabilities

({\mathbf{a}}^{*}=2\ensuremath{\pi}∕\mathbf{a})

Magnetic anisotropies of Ni–Pt and Co–Pt alloys

, in excellent agreement with previous experimental and theoretical studies.