Vapour deposition of lead on Ag(111) and equilibrium surface segregation from Ag-Pb(111) solid solutions: A LEED-AES comparative study

1984 ◽  
Vol 143 (2-3) ◽  
pp. A304
Author(s):  
A. Rolland ◽  
J. Bernardini ◽  
M.G. Barthes-Labrousse
Keyword(s):  
Comparative Study ◽  
Solid Solutions ◽  
Surface Segregation ◽  
Vapour Deposition ◽  
Equilibrium Surface

Surface Reconstruction of (123) and (111) Ge(Sn) Solid Solutions Induced by Tin Segregation

1998 ◽  
Vol 05 (01) ◽  
pp. 265-268 ◽  
Author(s):  
A. Rolland ◽  
A. Rouabah ◽  
F. Cabané
Keyword(s):  
Phase Diagram ◽  
Comparative Study ◽  
Surface Reconstruction ◽  
Solid Solutions ◽  
Surface Segregation ◽  
Fair Agreement ◽  
Kinetic Curves ◽  
Surface Reconstructions ◽  
Kinetics Of

We present a comparative study of tin segregation onto the (123) and (111) surfaces of a Ge(Sn)- 0.5 at. % bicrystal using the AES technique. Between 350°C and 450°C, the maximum segregated tin amount, about 1.25 monolayer, does not vary with the orientation of the surface or the temperature. This indicates that attractive Sn-Sn forces are involved in the segregated phase which is in fair agreement with the Ge-Sn phase diagram. The shape of the kinetic curves depends on the orientation. On the (111) surface, the formation of various structures in equilibrium with the bulk is correlated with surface reconstructions. First, Sn atoms take the place of Ge adatoms to form a 2D phase; then, Sn segregates in other superficial sites, which leads to the nucleation of denser 2D phases, such as (7 × 7) structure. On the (123) surface, Sn atoms take the place of Ge atoms in quasisubstitutional sites of the superficial layers; the kinetics of surface segregation is not sensitive to sub monolayer structures.

Comparative study of luminescent properties of Bi1-xPrxGeSbO6 and La1-xPrxGa0.5Sb1·5O6 (x = 0–0.5) solid solutions with rosiaite structures

2021 ◽  
Vol 232 ◽  
pp. 117869
Author(s):  
A.V. Egorysheva ◽  
S.V. Golodukhina ◽  
S.A. Khrushchalina ◽  
P.A. Ryabochkina ◽  
A.D. Taratynova ◽  
...  
Keyword(s):  
Comparative Study ◽  
Solid Solutions ◽  
Luminescent Properties

Equilibrium surface segregation of dissolved nonmetal atoms on iron(100) faces

1977 ◽  
Vol 63 ◽  
pp. 377-389 ◽  
Author(s):  
H.J. Grabke ◽  
W. Paulitschke ◽  
G. Tauber ◽  
H. Viefhaus
Keyword(s):  
Surface Segregation ◽  
Equilibrium Surface

Comparative study of the magnetic properties of the Yb(Gd)Te, La(Gd)Te and (La,Y)(Gd)Te solid solutions

1995 ◽  
Vol 225 (1-2) ◽  
pp. 159-162 ◽  
Author(s):  
S. Merah ◽  
D. Ravot ◽  
A. Percheron-Guegan ◽  
A. Mauger ◽  
O. Gorochov
Keyword(s):  
Magnetic Properties ◽  
Comparative Study ◽  
Solid Solutions

Comparative Study of Cation Ordering Effects in Single Crystals of 1:1 and 1:2 Complex Perovskites Solid Solutions

2004 ◽  
Vol 298 (1) ◽  
pp. 267-274 ◽  
Author(s):  
I. P. Raevski ◽  
S. A. Prosandeev ◽  
S. M. Emelyanov ◽  
V. G. Smotrakov ◽  
V. V. Eremkin ◽  
...  
Keyword(s):  
Comparative Study ◽  
Single Crystals ◽  
Solid Solutions ◽  
Cation Ordering ◽  
Ordering Effects ◽  
Complex Perovskites
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