8.3 ZPS: Core Band Entrapment and Polarization
169
Intensity
BE(eV)
625K
300 K
625-300K
(a)
ZnPd
Zn 3d 5/2
8.5
9.0
9.5
10.0
10.5 334.0 334.5 335.0 335.5 336.0 336.5
ZnPd
Pd 3d 5/2
Intensity
BE(eV)
625 K
300 K
625-300K
(b)
930 K
300 K
930-300 K
Intensity
BE(eV)
BeW
Be 1s
(c)
B
I
110
111
112
30.0
30.5
31.0
31.5
32.0
Intensity
BE(eV)
BeW
W 4f 7/2
930 K
300 K
900-300 K
(d)
I
B
Fig. 8.3 Thermally driven XPS-intensity inversion in a, b Zn/Pd [42] and c, d Be/W [32] alloying
interfaces. The ZPS reveals polarization dominance in all these interfaces. Reprinted with permission
from [47]. Copyright 2011 Elsevier
Table 8.2 The relative BE shift γ = [(I) − (B)]/ for the Cu/Pd, Ag/Pd, and Be/W alloy
interfaces (unit in eV)
Alloy
Band
E ν (0)
ν (B)
ν (I) − ν (0)
γ
Cu/Pd
Cu 2p 3/2 (eV) [49]
931.00
1.70
1.58
1.94
T
Pd 3d 5/2 (eV) [50]
330.26
4.36
1.55
1.36
Ag/Pd
−1.22
0.72
P
Ag 3d 5/2 (eV) [51]
363.02
4.63
−1.18
0.75
Be/W
Be 1s (eV) [52]
106.42
4.69
−0.63
0.86
W 4f 7/2 (eV) [53]
28.91
2.17
−0.41
0.81
The γ for Pd and Zn will be available provided with E 3d (0) of Zn. Reprinted with permission from
[34, 48]. Copyright 2013 and 2014 Elsevier