Pulsed ion beam surface analysis as a means of in situ real‐time analysis of thin films during growth

1994 ◽  
Vol 12 (4) ◽  
pp. 1943-1951 ◽  
Author(s):  
A. R. Krauss ◽  
Y. Lin ◽  
O. Auciello ◽  
G. J. Lamich ◽  
D. M. Gruen ◽  
...  
1991 ◽  
Vol 222 ◽  
Author(s):  
B. Johs ◽  
J. L. Edwards ◽  
K. T. Shiralagi ◽  
R. Droopad ◽  
K. Y. Choi ◽  
...  

ABSTRACTA modular spectroscopic ellipsometer, capable of both in-situ and ex-situ operation, has been used to measure important growth parameters of GaAs/AIGaAs structures. The ex-situ measurements provided layer thicknesses and compositions of the grown structures. In-situ ellipsometric measurements allowed the determination of growth rates, layer thicknesses, and high temperature optical constants. By performing a regression analysis of the in-situ data in real-time, the thickness and composition of an AIGaAs layer were extracted during the MBE growth of the structure.


2015 ◽  
Vol 50 (1) ◽  
pp. 197-206 ◽  
Author(s):  
Michael Thomas Zumstein ◽  
Hans-Peter E. Kohler ◽  
Kristopher McNeill ◽  
Michael Sander

2008 ◽  
Vol 39 (4) ◽  
pp. 865-874 ◽  
Author(s):  
G. Reinhart ◽  
A. Buffet ◽  
H. Nguyen-Thi ◽  
B. Billia ◽  
H. Jung ◽  
...  

2008 ◽  
Vol 310 (11) ◽  
pp. 2906-2914 ◽  
Author(s):  
H. Nguyen Thi ◽  
G. Reinhart ◽  
A. Buffet ◽  
T. Schenk ◽  
N. Mangelinck-Noël ◽  
...  

1994 ◽  
Vol 341 ◽  
Author(s):  
Orlando Auciello ◽  
A. R. Krauss ◽  
Y. Lin ◽  
R. P. H. Chang ◽  
D. M. Gruen

AbstractA new time-of-flight ion scattering and recoil spectroscopy (TOF-ISARS) technique has been developed and is now used to perform in situ, real-time analysis of ferroelectric and conductive oxide layers during growth. Initial results presented here show various major effects, namely: (a) RuO2 films on MgO substrates appear to be terminated in O atoms on the top layer located in between Ru atoms lying in the layer underneath (This effect may have major implications for the explanation of the elimination of polarization fatigue demonstrated for RuO2/PZT/RuO2 heterostructure capacitors); (b) deposition of a Ru monolayer on top of a Pb monolayer results in surface segregation of Pb until a complete Pb layer develops over the Ru monolayer; and (c) a Pb/Zr/Ti layered structure yields a top Pb layer with first evidence of the existence of Pb vacancies, which also may have major implications in relation to the electrical characteristics of PZT-based capacitors.


1999 ◽  
Vol 569 ◽  
Author(s):  
Y. Gao ◽  
A.H. Mueller ◽  
E.A. Irene ◽  
O. Auciello ◽  
A.R. Krauss ◽  
...  

ABSTRACTThe optical absorption peak at 4. leV associated with oxygen deficiency in YBa2Cu3O7−x thin films was monitored by spectroscopic ellipsometry (SE) in real time during the growth process. Two regimes dominated by oxygen out- and in-diffusion have been observed during deposition by ion beam sputtering at 700°C.The effect of oxygen partial pressure during the post-deposition cooling process on the oxidation of deposited films has also been investigated. The thermodynamic stability of the grown films was examined by real time SE during post annealing process. In-situ SE measurements have been performed to obtain the dielectric function of oxygen deficient YBa2Cu3O6 films in the temperature range from 27°C to 700°C. It has been demonstrated that real time SE is a sensitive and useful technique for in-situ diagnostics of the dynamics of YBa2Cu3O7−x thin film processes.


2007 ◽  
Vol 19 (7) ◽  
pp. 1656-1663 ◽  
Author(s):  
Raman Parkesh ◽  
Sahar Mohsin ◽  
T. Clive Lee ◽  
Thorfinnur Gunnlaugsson

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