| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7990064 | Journal of Alloys and Compounds | 2018 | 7 Pages |
Abstract
The high-quality LaxCeyPr1-x-yB6 (xâ¯=â¯0.6-0.8, yâ¯=â¯0.1-0.3) single crystals have been firstly grown by optical floating zone melting method. The crystal structure, mechanical and thermionic emission properties of the as-grown single crystals were characterized by X-ray single crystal diffractometer, SEM, XRD, X-ray Laue diffraction. Subgrain-boundary-free [100] LaxCeyPr1-x-yB6 single crystal with a good crystalline integrity and homogeneous element distribution is obtained. The Lattice constant of LaxCeyPr1-x-yB6 single crystal is lower than that of the LaB6 single crystal. The lowest FWHM of 162.0 arcsec belongs to the La0.6Ce0.3Pr0.1B6 single crystal. The highest thermionic emission current density of 105.10 A/cm2 and the lowest work function of 2.562â¯eV indicate that La0.6Ce0.3Pr0.1B6 single crystal is a very promising thermionic cathode material.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yan Wang, Jiuxing Zhang, Xinyu Yang, Zhongwen Zhu, Jingjing Zhao, Bin Xu, Zhi Li,