The Resource Initial surface reactions and nucleation kinetics of boron on atomically clean molybdenum substrates, by Richard Eugene Moore

Initial surface reactions and nucleation kinetics of boron on atomically clean molybdenum substrates, by Richard Eugene Moore

Label
Initial surface reactions and nucleation kinetics of boron on atomically clean molybdenum substrates
Title
Initial surface reactions and nucleation kinetics of boron on atomically clean molybdenum substrates
Statement of responsibility
by Richard Eugene Moore
Creator
Author
Subject
Language
eng
Summary
"A study of the chemical vapor deposition (CVD) of boron from boron triiodide (BI3) on molybdenum has been done with field emission microscopy (FEM) and low energy electron diffraction (LEED). A correlation of the efficiency by which BI3 is effectively dissociated to form adsorbed boron, and the temperature of the substrate has been shown through work function measurements on the boron covered molybdenum field emitter surfaces. The boron-induced work function change of molybdenum has been shown to be in agreement with a theoretical model which predicts positive, as well as negative work functions for adsorbate-substrate systems. It has previously been found that the theoretical model can be used to accurately determine the occurence of the adsorbate monolayer. By comparison of the experimental work function data with the theoretical model inferrence of the thermal accommodation coefficient, of the adsorbate source species (BI3), on the substrate is made. The free energy of desorption of boron from molybdenum field emitter surfaces has been measured by isothermal desorption experiments and been found to be 46.9 kcal/mole at boron coverages of about 0.4 monolayer. The time-dependent adsorption, leading to nucleation of boron on molybdenum field emitter surfaces has been observed to occur at about 0.5 monolayer coverages of boron. LEED studies of a Mo(100) single crystal at substrate temperatures of 700°C to 900°C in BI3 partial pressures of 3 x 10−8 torr result in no structure change relative to the clean surface, even at prolonged exposures to BI3. However, under the same experimental conditions, the Mo(110) surface exhibits the formation of one-dimensional disordered structures with the original ordering maintained in an orthogonal direction to the disorder"--Abstract, pages ii-iii
Member of
Cataloging source
UMR
http://library.link/vocab/creatorDate
1941-
http://library.link/vocab/creatorName
Moore, Richard Eugene
Degree
Ph. D.
Dissertation year
1973.
Granting institution
University of Missouri--Rolla
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/subjectName
  • Chemical vapor deposition
  • Chemical kinetics
  • Boron
  • Molybdenum
Label
Initial surface reactions and nucleation kinetics of boron on atomically clean molybdenum substrates, by Richard Eugene Moore
Instantiates
Publication
Note
Vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
913834812
Extent
1 online resource (x, 118 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
  • c
Other physical details
illustrations.
Specific material designation
remote
System control number
(OCoLC)913834812
Label
Initial surface reactions and nucleation kinetics of boron on atomically clean molybdenum substrates, by Richard Eugene Moore
Publication
Note
Vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
913834812
Extent
1 online resource (x, 118 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
  • c
Other physical details
illustrations.
Specific material designation
remote
System control number
(OCoLC)913834812

Library Locations

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      400 West 14th Street, Rolla, MO, 65409, US
      37.955220 -91.772210
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