Abstract
It is known that the distribution of the charge-states as well as the evaporation field shift to higher values as the specimen temperature is decreased at a constant rate of evaporation. This study has explored the effect of Mg or Ag addition on the evaporation field of Al in terms of the charge state distribution of the field evaporated Al ions. The fractional abundance of Al2+ ions with respect to the total Al ions in Al-Mg alloy is lower than that in pure Al, whereas it shows higher level in the Al-Ag alloy at lower temperatures. The temperature dependence of the fractional abundance of Al2+ ions has been also confirmed, suggesting that Al atoms in the Al-Mg alloy need lower evaporation field, while higher field is necessary to evaporate Al atoms in the Al-Ag alloy, compared with pure Al. This tendency is in agreement with that of the evaporation fields estimated theoretically by means of measurements of the work function and calculations of the binding energy of the pure Al, Al-Mg and Al-Ag alloys.
| Original language | English |
|---|---|
| Pages (from-to) | 31-35 |
| Number of pages | 5 |
| Journal | Ultramicroscopy |
| Volume | 132 |
| DOIs | |
| Publication status | Published - 2013 Sep |
| Externally published | Yes |
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Keywords
- Al alloy
- Atom probe tomography
- Binding energy
- Evaporation field
- Image force model
- Work function
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Electronic, Optical and Magnetic Materials
Cite this
Effect of Mg or Ag addition on the evaporation field of Al. / Aruga, Yasuhiro; Nako, Hidenori; Tsuneishi, Hidemasa; Hasegawa, Yuki; Tao, Hiroaki; Ichihara, Chikara; Serizawa, Ai.
In: Ultramicroscopy, Vol. 132, 09.2013, p. 31-35.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of Mg or Ag addition on the evaporation field of Al
AU - Aruga, Yasuhiro
AU - Nako, Hidenori
AU - Tsuneishi, Hidemasa
AU - Hasegawa, Yuki
AU - Tao, Hiroaki
AU - Ichihara, Chikara
AU - Serizawa, Ai
PY - 2013/9
Y1 - 2013/9
N2 - It is known that the distribution of the charge-states as well as the evaporation field shift to higher values as the specimen temperature is decreased at a constant rate of evaporation. This study has explored the effect of Mg or Ag addition on the evaporation field of Al in terms of the charge state distribution of the field evaporated Al ions. The fractional abundance of Al2+ ions with respect to the total Al ions in Al-Mg alloy is lower than that in pure Al, whereas it shows higher level in the Al-Ag alloy at lower temperatures. The temperature dependence of the fractional abundance of Al2+ ions has been also confirmed, suggesting that Al atoms in the Al-Mg alloy need lower evaporation field, while higher field is necessary to evaporate Al atoms in the Al-Ag alloy, compared with pure Al. This tendency is in agreement with that of the evaporation fields estimated theoretically by means of measurements of the work function and calculations of the binding energy of the pure Al, Al-Mg and Al-Ag alloys.
AB - It is known that the distribution of the charge-states as well as the evaporation field shift to higher values as the specimen temperature is decreased at a constant rate of evaporation. This study has explored the effect of Mg or Ag addition on the evaporation field of Al in terms of the charge state distribution of the field evaporated Al ions. The fractional abundance of Al2+ ions with respect to the total Al ions in Al-Mg alloy is lower than that in pure Al, whereas it shows higher level in the Al-Ag alloy at lower temperatures. The temperature dependence of the fractional abundance of Al2+ ions has been also confirmed, suggesting that Al atoms in the Al-Mg alloy need lower evaporation field, while higher field is necessary to evaporate Al atoms in the Al-Ag alloy, compared with pure Al. This tendency is in agreement with that of the evaporation fields estimated theoretically by means of measurements of the work function and calculations of the binding energy of the pure Al, Al-Mg and Al-Ag alloys.
KW - Al alloy
KW - Atom probe tomography
KW - Binding energy
KW - Evaporation field
KW - Image force model
KW - Work function
UR - http://www.scopus.com/inward/record.url?scp=84883778248&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84883778248&partnerID=8YFLogxK
U2 - 10.1016/j.ultramic.2012.10.011
DO - 10.1016/j.ultramic.2012.10.011
M3 - Article
C2 - 23234834
AN - SCOPUS:84883778248
VL - 132
SP - 31
EP - 35
JO - Ultramicroscopy
JF - Ultramicroscopy
SN - 0304-3991
ER -