scholarly journals Properties of Barium Cerate Thin Films Formed Using E-Beam Deposition

Crystals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1152
Author(s):  
Monica Susana Campos Covarrubias ◽  
Mantas Sriubas ◽  
Kristina Bockute ◽  
Piotr Winiarz ◽  
Tadeusz Miruszewski ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Composition ◽  
Electrical Properties ◽  
Total Conductivity ◽  
Barium Cerate ◽  
Technological Parameters ◽  
Thermal Expansion Coefficients ◽  
Mechanical And Electrical Properties ◽  
The Stability ◽  
Strained Films

This article focuses on the properties of the BaCeO3 thin films formed by electron-beam vapor deposition and investigates the formation of barium cerates on supports with different thermal expansion coefficients (Stainless Steel, Invar, Glass Sealing, and Inconel substrates) and the influence of the technological parameters on the properties of the formed thin films with an emphasis on the stability of the films. Morphology and phase composition and mechanical and electrical properties were investigated. It was found that the main factors influencing the phase composition and morphology of the films are the temperature of the support and the deposition rate. However, the mechanical properties of the films are mostly influenced by strains introduced to thin films by using different supports. Two interesting features of the electrical properties of the studied strained films were noticed: the film with the highest in-plane tensile strain showed the lowest activation energy of total conductivity, whereas the film with the lowest strain showed the highest value of total conductivity.

scholarly journals Properties of Barium Cerate-Zirconate Thin Films

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1005 ◽  
Author(s):  
Piotr Winiarz ◽  
Monica Susana Campos Covarrubias ◽  
Mantas Sriubas ◽  
Kristina Bockute ◽  
Tadeusz Miruszewski ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Spray Deposition ◽  
Atomic Layer ◽  
Rf Magnetron Sputtering ◽  
Aerosol Deposition ◽  
Total Conductivity ◽  
Barium Cerate ◽  
Layer Deposition ◽  
Interface Layers

In this work, we review several experimental results showing the electrical properties of barium cerate-zirconate thin films and discuss them in view of the possible influence of various factors on their properties. Most of the presented Ba(Ce, Zr, Y)O3 thin films were formed by the pulsed laser deposition (PLD) technique, however thin films prepared using other methods, like RF magnetron sputtering, electron-beam deposition, powder aerosol deposition (PAD), atomic layer deposition (ALD) and spray deposition are also reported. The electrical properties of the thin films strongly depend on the film microstructure. The influence of the interface layers, space-charge layers, and strain-modified layers on the total conductivity is also essential but in many cases is weaker.

Microtexture Dependence of Mechanical and Electrical Properties of Gold Thin Films Used for Micro Bumps of 3D Stacking Structures

2020 ◽  
Author(s):  
Genta Nakauchi ◽  
Shota Akasaki ◽  
Hideo Miura
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Electrical Properties ◽  
Grain Boundaries ◽  
Indentation Test ◽  
Electron Back Scatter Diffraction ◽  
Effective Lifetime ◽  
Mechanical And Electrical Properties ◽  
Gold Thin Films ◽  
3D Stacking

Abstract The variation of their crystallinity, in other words, the order of atom arrangement of grain boundaries in electroplated gold thin films was investigated by changing their manufacturing conditions. Then, the effect of the crystallinity on both their mechanical and electrical properties was measured by using nano-indentation test and electromigration test. The crystallinity of the gold thin films was varied by changing the under-layer material used for electroplating. Also, the micro texture of gold thin films was evaluated by EBSD (Electron Back-Scatter Diffraction) and XRD (X-Ray Diffraction). It was clarified that the crystallinity of the electroplated gold thin films changed drastically depending on the crystallinity of the under-layer materials and electroplating conditions such as current density and temperature. This variation of the crystallinity should have caused wide variation of mechanical properties of the films. In addition, their mechanical properties such as Young’s modulus and hardness showed wide variation by about 3 times comparing with those of bulk gold. Similarly, the EM resistance of the electroplated gold bumps varied drastically depending on the ratio of porous grain boundaries and their crystallinity. Both the ratio and crystallinity also varied depending on the crystallinity of the under layer and electroplating conditions. The effective lifetime of the gold bumps was successfully predicted by considering both the crystallinity and residual stress of fine gold bumps. The lifetime varied more than 10 times as a strong function of the crystallinity of grain boundaries in the fine bumps. Therefore, it is very important to control the crystallinity of the under-layer for electroplating in order to control the distribution of the mechanical properties and reliability of the electroplated gold thin films.

scholarly journals Influence of nitrogen content on the structural, mechanical and electrical properties of TiN thin films

2005 ◽  
Vol 191 (2-3) ◽  
pp. 317-323 ◽  
Author(s):  
F. Vaz ◽  
J. Ferreira ◽  
E. Ribeiro ◽  
L. Rebouta ◽  
S. Lanceros-Méndez ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Nitrogen Content ◽  
Mechanical And Electrical Properties ◽  
Tin Thin Films

Influence of alcohol on mechanical and electrical properties of thin organic films

Open Physics ◽  
2007 ◽  
Vol 5 (3) ◽  
Author(s):  
Martin Kopáni ◽  
Martin Weis
Keyword(s):  
Electrical Properties ◽  
Conformational Changes ◽  
Structural Changes ◽  
Pure Water ◽  
Contactless Method ◽  
Dipalmitoyl Phosphatidylcholine ◽  
Mechanical And Electrical Properties ◽  
Methanol Solutions ◽  
The Stability ◽  
Displacement Currents

AbstractStability of organic materials properties is essential for further applications and was intensely investigated in last few decades. The aim of this study is to detect the structural changes of dipalmitoyl-phosphatidylcholine (DPPC) monolayer as a model system of organic material under influence of alcohols solutions. As subphases of monolayers (Langmuir films), pure water, ethanol and methanol solutions were used. For detection of changes in charge states of the molecules as well as relation with structural and conformational changes, a contactless method employing Maxwell’s displacement currents (MDC) was used. In DPPC monolayer on the subphase of methanol-water, a gradual absorption of methanol molecules into the layer can appear. In DPPC monolayer on the subphase of ethanol-water adsorption of ethanol molecules on the layer can be observed. Influence of alcohols results in a significant change of mechanical and electrical properties as well as in the stability of thin films.

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