Structure and Magnetic Properties of Mechanosynthesized Nanocrystalline FeCrSi Heusler Alloy.

Heusler alloys constitute an interesting group of materials with wide applications. The purpose of the present study was to use the mechanical alloying method to synthesize FeCrSi Heusler alloy and learn about its structure and magnetic properties. Pure metal elements were ground for various periods of time in a planetary ball mill, and the process of alloy formation was monitored using X-ray diffraction and Mössbauer spectroscopy.

Influence of Powder Milling and Annealing Parameters on the Formation of Cubic LiLaZrO Compound.

Li-ion batteries are widely used as energy storage devices due to their excellent electrochemical performance. The cubic LiLaZrO (c-LLZO) compound is regarded as a promising candidate as a solid-state electrolyte for lithium-ion batteries due to its high bulk Li-ion conductivity, excellent thermal performance, and chemical stability. The standard manufacturing procedure involves the high-temperature and lengthy annealing of powders.

Verification of the de Wolff hypothesis concerning the symmetry of β-MnO.

The symmetry lowering from tetragonal to orthorhombic is demonstrated using high-resolution diffraction and also justified by using the magnetic superspace groups formalism for the rutile-type compound β-MnO. The (lower) orthorhombic symmetry is observed at temperatures both below and above the Néel temperature. The magnetic ordering of β-MnO is of spin density type and not screw-type helical.