Abstract We explore the topological phase transitions of RbAg 5 Se 3 using first-principles calculations in combination with maximally localized Wannier function method. Our computations reveal that type-II Dirac cone protected by inversion and time-inversion ( PT ) symmetry addition to C 4z rotation can be regulated type-III type-I points applying strain along [001] direction. More interesting...
The paramagnetic resonance of Na 5 AlF 2 (PO 4 ) single crystals with chromium impurity was studied. Cr 3+ centers have been found to replace the triclinic Al positions. In local coordinate system, spectra these were described by spin Hamiltonian rhombic symmetry. addition, vanadium and unidentified symmetry observed. Keywords: ions, aluminum fluoride phosphate, resonance.
In the present work we a preliminary experimental and ab-initio study of series compounds with nominal composition Sm1-xMMxCo5-y-zFeyNiz (x = 0 – 0.7; y 0.5 1.5; z 1). Compounds MM content up to 50% were successfully synthesized in CaCu5-type structure, retaining uniaxial magnetocrystalline anisotropy. Magnetization values are within 85 50 Am2/kg range, Ni playing significant role stabilization...
