DocumentCode
2925177
Title
17.2: Ab initio models of dispenser B-type, scandate, and alloy cathode surfaces
Author
Vlahos, Vasilios ; Morgan, Dane ; Booske, John H.
Author_Institution
Interdiscipl. Mater. Sci., Univ. of Wisconsin-Madison, Madison, WI, USA
fYear
2010
fDate
18-20 May 2010
Firstpage
419
Lastpage
420
Abstract
The work function (Φ) and operating stability of dispenser, scandate, and alloy cathodes are investigated with ab initio quantum mechanical modeling. Low Φ, thermodynamically stable, and steady state surface configurations are identified, while the ability of alloy surfaces to improve emission is presented.
Keywords
cathodes; electrochemical electrodes; quantum theory; work function; ab initio quantum mechanical modeling; alloy cathode surfaces; alloy cathodes; dispensers; scandates; steady state surface configurations; thermodynamic stability; work function; Atomic layer deposition; Barium; Cathodes; Chemicals; Coatings; Materials science and technology; Quantum mechanics; Stability; Surface structures; Temperature; ab initio modeling; scandate; work function;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Electronics Conference (IVEC), 2010 IEEE International
Conference_Location
Monterey, CA
Print_ISBN
978-1-4244-7098-3
Type
conf
DOI
10.1109/IVELEC.2010.5503436
Filename
5503436
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