Particle irradiation and electron work function: Fe single crystal bombarded with Ar+ ions

2016 ◽  
Vol 124 ◽  
pp. 38-40 ◽  
Author(s):  
Ákos Horváth ◽  
Norbert Nagy ◽  
Robert Schiller
Keyword(s):  
Single Crystal ◽  
Work Function ◽  
Electron Work Function ◽  
Particle Irradiation

Thermionic Emission of Yttrium Dodecaboride Single Crystal

2019 ◽  
Vol 289 ◽  
pp. 47-52 ◽  
Author(s):  
Daniil Voronovych ◽  
Anatoliy Taran ◽  
Oksana Podshyvalova ◽  
Natalya Shitsevalova ◽  
Volodymyr Filipov ◽  
...  
Keyword(s):  
Single Crystal ◽  
Work Function ◽  
Current Density ◽  
Crystal Surface ◽  
High Vacuum ◽  
Electron Work Function ◽  
Linear Functions ◽  
Zero Field ◽  
Effective Electron ◽  
Temperature Dependences

Experimental data on thermionic current density and electron work function of YB12 (100) at T = 1218 – 1978 K in high vacuum (p < 10-4 Pa) are first introduced. Temperature dependences of the thermionic current density and effective electron work function are presented without extrapolation to the zero-field currents because of the anomalous Schottky effect. The temperature dependences of theYB12 electron work function can be described by linear functions at certain temperature intervals. Preferential boron evaporation and additional ion bombardment by the residual gases ions and evaporated boron ions results in appearance of new phases depleted of boron on the YB12 surface. As a result, an YB4 – YB6 double layer on the YB12 single crystal surface has formed. The appearance of the new boride phases, depleted of boron, on the emitting surface causes an increase of thermionic current density compared with individual YB12.

Epitaxial ferroelectric thin films

1994 ◽  
Vol 52 ◽  
pp. 572-573
Author(s):  
S. G. Ghonge ◽  
E. Goo ◽  
R. Ramesh ◽  
R. Haakenaasen ◽  
D. K. Fork
Keyword(s):  
Single Crystal ◽  
Work Function ◽  
Nonvolatile Memory ◽  
Ferroelectric Properties ◽  
Electrical Contact ◽  
Memory Devices ◽  
Ferroelectric Films ◽  
Si Substrates ◽  
Electro Optic ◽  
Wide Range

Microstructure of epitaxial ferroelectric/conductive oxide heterostructures on LaAIO3(LAO) and Si substrates have been studied by conventional and high resolution transmission electron microscopy. The epitaxial films have a wide range of potential applications in areas such as non-volatile memory devices, electro-optic devices and pyroelectric detectors. For applications such as electro-optic devices the films must be single crystal and for applications such as nonvolatile memory devices and pyroelectric devices single crystal films will enhance the performance of the devices. The ferroelectric films studied are Pb(Zr0.2Ti0.8)O3(PLZT), PbTiO3(PT), BiTiO3(BT) and Pb0.9La0.1(Zr0.2Ti0.8)0.975O3(PLZT).Electrical contact to ferroelectric films is commonly made with metals such as Pt. Metals generally have a large difference in work function compared to the work function of the ferroelectric oxides. This results in a Schottky barrier at the interface and the interfacial space charge is believed to responsible for domain pinning and degradation in the ferroelectric properties resulting in phenomenon such as fatigue.

Electron work function of Rb-Cs alloys

2006 ◽  
Vol 51 (12) ◽  
pp. 1627-1629
Author(s):  
B. B. Alchagirov ◽  
B. S. Karamurzov ◽  
T. A. Sizhazhev ◽  
T. M. Taova ◽  
R. Kh. Arkhestov
Keyword(s):  
Work Function ◽  
Electron Work Function

EFFECT OF GRAIN SIZE ON THE ELECTRON WORK FUNCTION OF Cu AND Al

2004 ◽  
Vol 11 (02) ◽  
pp. 173-178 ◽  
Author(s):  
WEN LI ◽  
D. Y. LI
Keyword(s):  
Grain Size ◽  
Phase Transformation ◽  
Grain Boundary ◽  
Work Function ◽  
Electron Work Function ◽  
Deformation Texture ◽  
Kelvin Probe ◽  
Surface Conditions ◽  
The Mean ◽  
Sophisticated Instrument

The Kelvin probe is a sophisticated instrument which is very sensitive to changes in surface conditions, such as deformation, texture, phase transformation and contamination. Efforts have been made to use this technique to diagnose wear. In this study, the effect of the grain boundary (GB) on the electron work function (EWF) was examined with the aim of investigating the contribution of changes in grain size to total changes in the EWF during wear. Copper and aluminum were studied as examples. It was demonstrated that the EWF dropped in the vicinity of GB's and the mean EWF decreased as the grain size decreased. The mechanism responsible for the changes in the EWF with respect to the GB is discussed.

Understanding the low corrosion potential and high corrosion resistance of nano-zinc electrodeposit based on electron work function and interfacial potential difference

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97606-97612 ◽  
Author(s):  
Qingyang Li ◽  
Hao Lu ◽  
Juan Cui ◽  
Maozhong An ◽  
Dongyang (D. Y.) Li
Keyword(s):  
Corrosion Resistance ◽  
Work Function ◽  
Corrosion Potential ◽  
Electron Work Function ◽  
Coarse Grained ◽  
High Corrosion Resistance ◽  
Corrosion Behaviors ◽  
Interfacial Potential ◽  
Nano Zinc ◽  
Zinc Coatings

The corrosion behaviors of coarse-grained and nanocrystalline zinc coatings and correlated the corrosion potential with electron stability are investigated.

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