Single-crystalline SmB6 nanowires

SmB 6 nanoparticles: Synthesis, valence states, and magnetic properties

“…SmB 6 nanowires are prepared by the liquid Sm (melting point of 1072 ) reacting with BCl 3 gas at a temperature of 1100 [19]. SmB 6 powders are prepared by a solid state reaction of Sm sources with B or B 4 C at a high temperature of 1650 o C [20]. However, at this high reaction temperature, the stoichiometry of the products was hard to be well controlled due to the high volatilization nature of Sm element.…”

Bulk and surface properties of SmB6

“…1.3 (a) [46]. Eight coplanar electrical contacts were attached on the (100) and (100) surfaces of a polished flux-grown SmB 6 single crystal. The standard configuration used in previous measurements, R lat , cannot distinguish surface and bulk conduction; however, measurements using contacts on opposite sides of the samples could.…”

Synthesis, densification, microstructure, and mechanical properties of samarium hexaboride ceramic

“…SmB 6 exhibits an insulator to metal transition at around −223°C, which coincides with the opening of the band gap in accordance with the Kondo effect. Moreover, SmB 6 has a low work function, which can make it a candidate in thermionic emission, field‐induced emission, and thermal field‐induced emission applications …”

“…SmB 6 is an intermediate valence material characterized by an energy gap near the Fermi level like a semiconductor . It is also a fluctuating valence Kondo insulator that is predicted to be a topological Kondo insulator . However, convincing experimental evidence verifying this behavior is lacking, partly due to the difficulty in obtaining high purity and homogeneous SmB 6 single crystals.…”