12008-33-2Relevant articles and documents
Semiconductor-insulator transition in a YbB6 nanowire with boron vacancy
Han, Wei,Wang, Zhen,Li, Qidong,Lian, Xin,Liu, Xudong,Fan, Qinghua,Zhao, Yanming
, p. 244 - 250 (2018)
In this paper, we report the study of transport and magnetic properties of ytterbium hexaboride (YbB6) nanowires grown by a low trigger-temperature (200–240 °C) solid state method. The temperature dependence of resistivity shows that the YbBsu
Thermoelectric properties of some metal borides
Takeda, Masatoshi,Fukuda, Tadahiro,Domingo, Ferrer,Miura, Takahiro
, p. 471 - 475 (2008/10/09)
Polycrystalline AlMgB14 and some hexaborides (CaB6, SrB6, YbB6, SmB6, and CeB6) were synthesized to examine their thermoelectric properties. Single phase of orthorhombic AlMgB14, which contains B12 icosahedral clusters as building blocks, was obtained at sintering temperatures between 1573 and 1823K. Seebeck coefficient (α) and electrical conductivity (σ) of the phase were about 500μV/K and 10-11/Ωm at room temperature, respectively. These values are comparable to those of metal-doped β-rhombohedral boron. On the other hand, metal hexaborides with divalent cation possessed large negative α ranging from -100 to -270μV/K at 1073K. Calculated power factors of CaB6 and SrB 6 exceeded 10-3W/K2m within the entire range of temperature measured. As a result, they can be thought as promising candidates for n-type thermoelectric material.
Evidence for a ferromagnetic transition in Yb1-xLaxB6 (0≤x≤0.006)
Iga, Fumitoshi,Ueda, Yuki,Takabatake, Toshiro,Suzuki, Takashi,Higemoto, Wataru,et al.
, p. 1 - 4 (2008/10/08)
Magnetization and muon spin relaxation (μSR)in Yb1-xLaxB6 have been measured to study whether ferromagnetic moments appear as in La-doped CaB6. Magnetization processes of polycrystalline samples for 0≤x≤0.006 have revealed ferromagnetic hysteresis with a saturation moment of 1 × 10-4μB/f.u. On cooling below 150 K, an increase of the internal field up to 0.6 mT has been observed by zero-field/μSR measurements on both polycrystals and single crystals. These results indicate a ferromagnetic transition at 150 K in this system.