Single-crystalline La Pr1−B6 nanoawls: Synthesis, characterization and growth mechanism

Han, Wei; Zhang, Hao; Chen, Jian; Zhao, Yanming; Fan, Qinghua; Li, Qidong; Li, Xudong; Lin, Xinghao

doi:10.1016/j.ceramint.2016.01.006

Cited by 12 publications

(3 citation statements)

References 40 publications

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“…In addition to the catalytic growth using metal particles (Au, Ni), there is also selfcatalytic growth using rare-earth metals themselves as catalysts. In 2016, Han et al reported the self-catalytic growth of NdB 6 and ternary La x Pr 1−x B 6 nanowires by an ordinarypressure CVD method, as shown in Figure 2c,d [36,37]. Besides the NdB 6 nanowires, they also acquired NdB 6 nanoawls and nanotubes.…”

Section: Cvd Growthmentioning

confidence: 99%

“…As an emerging topological insulator, many experiments and theoretical studies have been conducted on bulk SmB 6 single crystals [8]. From 2016, researchers began to investigate the novel electronic transport and magneto-transport properties of SmB 6 nanowires [37,38,53,[58][59][60][61][62]. In 2017, Kong et al reported the spin-polarized surface state transport of single SmB 6 nanowires (Figure 4a-c) [58].…”

Section: Electronic Transportationmentioning

confidence: 99%

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Recent Developments on Rare-Earth Hexaboride Nanowires

Wang

Han

2021

Sustainability

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With the rise of topological insulator samarium hexaboride (SmB6), rare-earth hexaboride (RB6) nanowires are the focus of the second wave of a research boom. Recent research has focused on new preparation methods, novel electronic properties, and extensive applications. Here, we review the recent developments in RB6 nanowires in the past five years. Two main synthesis methods (chemical vapor deposition and high-pressure solid-state) of RB6 nanowires are introduced and compared. Moreover, their electronic transport, magnetic properties, and superconducting properties are revealed. Furthermore, the applications of RB6 nanowires are presented, including as field emitters, photodetectors, and in energy storage. Finally, we detail further research directions for RB6 nanowires.

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Section: Cvd Growthmentioning

confidence: 99%

Section: Electronic Transportationmentioning

confidence: 99%

Recent Developments on Rare-Earth Hexaboride Nanowires

Wang

Han

2021

Sustainability

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“…These are isolated from the high-symmetry A 1g , E g and T 2g modes, and thus cannot be attributed to splitting. Han et al (2016) have attributed these extra modes to second-order excitation of the T 2g phonon. However, Martinho et al (2009) contest this, stating that the energy of the extra mode is less than twice the T 2g phonon frequency, that the selection rule for this mode is incompatible with any combination of the O h irreducible representations and that the temperature dependence is incompatible with a two-phonon process.…”

Section: Relaxation In Octahedramentioning

confidence: 99%

Nanodomains and local structure in ternary alkaline-earth hexaborides

et al. 2018

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The local structures of ternary alkaline-earth hexaborides (MB 6 , M = Ca 0.5 Sr 0.5 , Ca 0.5 Ba 0.5 and Sr 0.5 Ba 0.5 ) have been analysed using X-ray pair distribution function (PDF) analysis, Raman spectroscopy and transmission electron microscopy (TEM). The results show significant local deviations from the average cubic structure within the boron sub-lattice and support the conclusion that rapid synthesis processes lead to the formation of coherent nanodomains over length scales of about 10 nm. Reverse Monte Carlo fitting of the PDFs allows for quantification of the displacement disorder within the boron sublattice as a function of sample composition. Detailed Raman spectroscopy studies and high-resolution TEM support the models derived from X-ray scattering. The average magnitude of the static displacement disorder varies by sample composition and positively correlates with the cation radius ratios across the three compositions. The new models form a foundation for future computational and experimental studies aimed at understanding and predicting properties of hexaborides.

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