Bozidar Cekić

Structure and electronic properties of Mo 3 Pt , MoPt 2 , and MoPt 3 : First-principles calculations

Ab initio calculations of the structural and electronic properties of

SEM and XRD Characterization of Ni-Hf Alloys at Low Hf Concentration

{\text{Mo}}_{3}\text{Pt}

Lowest Energy Structures and Electronic Properties of Small Molybdenum Clusters

,

Nature of Magnetism in the HfCo2 Laves Phase

{\text{MoPt}}_{2}

Mineral characterization of soil type ranker formed on serpentines occurring in southern Belgrade environs Bubanj Potok

, and

Mössbauer Spectroscopic Analysis of Nd2Fe14B/α-Fe Hard Magnetic Nanocomposites

{\text{MoPt}}_{3}

Magnetism of the Compounds in the Hf-Co Phase System

are presented. In particular, the enthalpy of formation of the investigated intermetallics is considered and their bonding properties, as obtained from the atoms in molecules theory, are analyzed. The results are discussed in view of the potential application of these systems as cathode materials in the process of electrocatalytic production of hydrogen. Our calculations predict

Influence of Annealing on Structure and Magnetic Properties of Laves Phase HfFe2

{\text{MoPt}}_{3}

The Influence of the Transition Metal Atoms (X) Microstructural Ordering on the Magnetic Properties of the Hf-X Systems

to be the best catalyst, which is in agreement with experimental trends.

Evidence for a hybridization-induced electric quadrupole interaction in the intermetallic compound Hf2Fe.

The alloying and phase formation in Ni-Hf samples with 0.2-, 2-, and 5-at.% Hf were studied by X-ray diffraction (XRD) technique and scanning electron microscopy (SEM). Both characterization methods, XRD and SEM, reveal the presence of the HfNi5 phase (fcc structure) where the excess Ni atoms are present in the form of Ni or Ni-rich segregations in the sample containing 5-at.% Hf. The sample with 2-at.% Hf is characterized by the presence of the two phases present in the 5-at.% sample and by Hf atoms, which occupy substitutional lattice positions in the Ni lattice. Finally, in the third sample with 0.2-at.% Hf, the Hf atoms mainly substitute the Ni atoms in the lattice. This analysis is being complemented with additional information on the local structure around Hf by extended X-ray absorption fine structure spectroscopy (EXAFS).