Autor: Trębala, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Elastic-plastic transition in MBE-grown GaSb semiconducting crystal examined by nanoindentation
Autorzy:: Majtyka, A.
Trębala, M.
Tukiainen, A.
Chrobak, D.
Borgieł, W.
Räisänen, J.
Nowak, R.
Powiązania:: https://bibliotekanauki.pl/articles/1075863.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.40.Jj
62.20.F-
81.15.Hi
81.05.Ea
Opis:: The present paper concerns the elastic-plastic nanodeformation of Te-doped GaSb crystals grown by molecular beam epitaxy on the n-type of GaSb substrate. The conventional analysis of nanoindentation data obtained with sharp triangular (Berkovich) and spherical tip revealed the elastic modulus (E=83.07± 1.78 GPa), hardness (H=5.19±0.25 GPa) and "true hardness" (H_{T}=5.73±0.04 GPa). The registered pop-in event which indicates the elastic-plastic transition in GaSb crystal points towards the corresponding yield strength (σ_{Y}=3.8±0.1 GPa). The origin of incipient plasticity in GaSb crystal is discussed in terms of elastic-plastic deformation energy concept.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 1131-1133
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Mechanisms of the potassium stabilization in K2Fe22O34
Autorzy:: Trębala, M.
Powiązania:: https://bibliotekanauki.pl/articles/115421.pdf
Data publikacji:: 2011
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: Potassium ferrite
Styrene catalyst
potassium lost
work function
potassium desorption
Opis:: Effect of potassium stabilization in K₂Fe₂₂O₃₄, the principal phase of styrene catalyst is caused by doping Cr and Ce. The effect was investigated by means of potassium ion and neutral atom thermal desorption. The kinetics for K⁺ and K emission from undoped and Ce-, Cr-doped b-K₂Fe₂₂O₃₄ is studied with the field reversal technique and steady-state mode in high vacuum conditions. Two main mechanisms of the stabilization were developed depending on the dopant location. Chromium is located in the structure of β-ferrite and slows down the diffusion potassium ion. Cerium segregated at the basal planes favoring the cationic state of potassium inhibits the probability of potassium atoms to leave the K₂Fe₂₂O₃₄ surface via work function increase.
Źródło:: Challenges of Modern Technology; 2011, 2, 2; 43-45
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja