DocumentCode :
1859779
Title :
Strontium vanadate: An ultra-low work function electron emission material
Author :
Jacobs, Ryan M. ; Morgan, Dane ; Booske, John H.
Author_Institution :
Mater. Sci. Program, Univ. of Wisconsin-Madison, Madison, WI, USA
fYear :
2015
fDate :
27-29 April 2015
Firstpage :
1
Lastpage :
2
Abstract :
Strontium vanadate, SrVO3, is a transition metal perovskite oxide with a low predicted work function of 1.79 eV using Density Functional Theory. Alloying SrVO3 with Ba resulted in Ba segregation to the emitting surface, producing an ultra-low work function of only 1.07 eV. This Ba-enriched emitting surface is predicted to be very long-lived compared to Ba-impregnated W and scandate cathodes.
Keywords :
density functional theory; electron field emission; strontium compounds; work function; SrVO3; alloying; density functional theory; scandate cathodes; segregation; strontium vanadate; transition metal perovskite oxide; ultralow work function electron emission material; Barium; Cathodes; Discrete Fourier transforms; Electron emission; Slabs; Surface contamination; density functional theory; electron emission; materials modeling; perovskite; thermionic cathode; work function;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
Type :
conf
DOI :
10.1109/IVEC.2015.7223772
Filename :
7223772
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1859779
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