Thermal annealing and pressure effects on BaFe Co As single crystals.

We investigate the pressure and thermal annealing effects on BaFe Co As (Co-Ba122) single crystals with x  =  0.1 and 0.17 via electrical transport measurements.

Tuning the ferromagnetic phase in the CDW compound SmNiC2 via chemical alloying.

We report a study on tuning the charge density wave (CDW) ferromagnet SmNiC2 to a weakly coupled superconductor by substituting La for Sm. X-ray diffraction measurements show that the doped compounds obey Vegard's law, where La (Lu) alloying expands (shrinks) the lattice due to its larger (smaller) atomic size than Sm. In the series Sm1-xLaxNiC2, CDW transition (TCDW = 148 K) for SmNiC2 is gradually suppressed, while the ferromagnetic (FM) ordering temperature (TC) at 17 K slightly increases up to x = 0.