Magnetism and the absence of superconductivity in the praseodymium–silicon system doped with carbon and boron

Abstract

Keywords:Rare earth compound Praseodymium silicide Magnetism and superconductivity search for new phase High-pressure high temperature a b s t r a c tWe searched for new structural, magnetic and superconductivity phases in the Pr-Si system using highpressure high-temperature and arc melting syntheses. Both high and low Si concentration areas of the phase diagram were explored. Although a similar approach in the La-Si system produced new stable superconducting phases, in the Pr-Si system we did not find any new superconductors. At low Si concentrations, the arc-melted samples were doped with C or B. It was found that addition of C gave rise to multiple previously unknown ferromagnetic phases. Furthermore, X-ray refinement of the undoped samples confirmed the existence of the so far elusive Pr 3 Si 2 phase.

Magnetic field modulated microwave spectroscopy across phase transitions and the search for new superconductors

“…Figure 19 shows the MFMMS (a) and SQUID (b) data for bulk PrSi 2 alloy prepared by arc-melting [98]. The ferromagnetic transition at 11 K is confirmed by the two measurements.…”

Applying first principles to study the structural, electronic, and magnetic properties of Pr adsorbed ASiNRs

“…All these compounds are metallic and magnetic with a bandgap Eg = 0, densities from 5 to 6.5 g/cc. However, no simulation study results have been published from doping Pr with Silicene with armchairs or zigzag forms (Guang Tian et al, 2019;Haifang Yang et al, 2003;de la Venta a,n et al, 2013;Yusuke Saito et al, 2013).…”

Structure refinements of the compounds Pr5Si3 and Zr3Si2

“…In [16] the structure of the binary compound Zr 3 Si 2 was studied on powder diffraction data and the unitcell parameters were refined ( Table 2). The unit-cell parameters of the Pr 5 Si 3 compound have several times been refined on polycrystalline samples [3,13,[20][21][22][23][24][25][26][27]. In [2] the crystal structure was determined on single crystals grown by the floating zone technique with optical heating.…”