Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (9): 981-986.DOI: 10.15541/jim20170539
• Orginal Article • Previous Articles Next Articles
WANG Yan, ZHANG Jiu-Xing, YANG Xin-Yu, ZHAO Jing-Jing, NING Shu-Yu, LI Zhi
Received:
2017-11-13
Revised:
2018-03-16
Published:
2018-09-20
Online:
2018-08-14
About author:
WANG Yan. E-mail: 13855150682@163.com
Supported by:
CLC Number:
WANG Yan, ZHANG Jiu-Xing, YANG Xin-Yu, ZHAO Jing-Jing, NING Shu-Yu, LI Zhi. Floating Zone Growth and Thermionic Emission Property of [100], [110], [111] CeB6 Single Crystal[J]. Journal of Inorganic Materials, 2018, 33(9): 981-986.
Fig. 1 Photograph of molten zone state(a) Feed and seed rod began to melt; (b) Stable molten zone formed; (c) Orientated growth of CeB6 single crystal; (d) Molten zone narrowed down
Fig. 4 Laue diffraction patterns of CeB6 single crystal(a) Laue diffraction spots of growth plane; (b) Laue diffraction spots of [100] CeB6 single crystal; (c) Comparison diagram of [100] CeB6 single crystal with standard diffraction spots
Fig. 7 Laue diffraction patterns of [110] (a) and [111] (b) CeB6 single crystal; (c) Comparison diagram of [110] single crystal; (d) Comparison diagram of [111] single crystal
T/K | lg J0 | J0/(A·cm-2) | Φeff /eV | ||||||
---|---|---|---|---|---|---|---|---|---|
[100] | [110] | [111] | [100] | [110] | [111] | [100] | [110] | [111] | |
1773 | 0.844 | 0.405 | 0.143 | 6.975 | 2.540 | 1.389 | 2.721 | 2.875 | 2.968 |
1873 | 1.216 | 0.671 | 0.419 | 16.455 | 4.683 | 2.626 | 2.754 | 2.956 | 3.050 |
1973 | 1.465 | 1.058 | 0.730 | 29.182 | 11.428 | 5.373 | 2.821 | 2.980 | 3.109 |
Table 1 Zero emission current density J0 and effective work function Φeff of [100], [110], [111] CeB6 single crystal at different temperatures
T/K | lg J0 | J0/(A·cm-2) | Φeff /eV | ||||||
---|---|---|---|---|---|---|---|---|---|
[100] | [110] | [111] | [100] | [110] | [111] | [100] | [110] | [111] | |
1773 | 0.844 | 0.405 | 0.143 | 6.975 | 2.540 | 1.389 | 2.721 | 2.875 | 2.968 |
1873 | 1.216 | 0.671 | 0.419 | 16.455 | 4.683 | 2.626 | 2.754 | 2.956 | 3.050 |
1973 | 1.465 | 1.058 | 0.730 | 29.182 | 11.428 | 5.373 | 2.821 | 2.980 | 3.109 |
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