Thin-Thick Adsorption Phase Transitions and Competing Short-Range Forces

1989 ◽  
Vol 10 (2) ◽  
pp. 165-170 ◽  
Author(s):  
J. O Indekeu
Keyword(s):  
Phase Transitions ◽  
Short Range ◽  
Adsorption Phase

Magnetic phase transitions, short-range correlations and spin fluctuations in (Gd1−xYx)3Co

2001 ◽  
Vol 329 (1-2) ◽  
pp. 22-30 ◽  
Author(s):  
N.V Baranov ◽  
A.A Yermakov ◽  
P.E Markin ◽  
U.M Possokhov ◽  
H Michor ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Short Range ◽  
Magnetic Phase ◽  
Spin Fluctuations ◽  
Magnetic Phase Transitions ◽  
Short Range Correlations

OBSERVATION OF PHASE TRANSITIONS AT THE (100) SURFACE OF Al-3 at.% Ag

1995 ◽  
Vol 02 (02) ◽  
pp. 141-145 ◽  
Author(s):  
E. WETLI ◽  
M. HOCHSTRASSER ◽  
D. PESCIA ◽  
M. ERBUDAK
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Photoelectron Spectroscopy ◽  
Short Range ◽  
Short Range Order ◽  
Elevated Temperatures ◽  
X Ray ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

In the bulk binary alloy Al-3 at.% Ag , Ag 2 Al precipitates are formed below 410°C which are reversibly dissolved at elevated temperatures. We have followed this phase transition at a (100) surface as a function of temperature by monitoring the bandwidth of the Ag 4d states in X-ray photoelectron spectroscopy. Since the bandwidth measures the coordination number of the emitting atoms, it directly reveals the short-range order of the Ag atoms at the surface. The measurements show that the dissolution of the Ag -rich clusters starts at temperatures at least 100 K below the bulk transition, and the observed hysteresis behavior is indicative of a first-order phase transition at the surface.

Topology and Phase Transitions: The Case of the Short Range Spherical Model

2006 ◽  
Vol 124 (5) ◽  
pp. 1231-1253 ◽  
Author(s):  
Sebastián Risau-Gusman ◽  
Ana C. Ribeiro-Teixeira ◽  
Daniel A. Stariolo
Keyword(s):  
Phase Transitions ◽  
Short Range ◽  
Spherical Model
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