Temat: 78.40.kc - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Vacuum Ultraviolet Reflectivity of Cd$\text{}_{1-x}$Fe$\text{}_{x}$Te
Autorzy:: Dębowska, D.
Zimnal-Starnawska, M.
Kisiel, A.
Piacentini, M.
Zema, N.
Giriat, W.
Powiązania:: https://bibliotekanauki.pl/articles/1920915.pdf
Data publikacji:: 1992-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.40.Kc
78.55.Et
Opis:: Reflectivity spectra for mixed crystals Cd$\text{}_{1-x}$Fe$\text{}_{x}$Te with 0.00 ≤ x ≤0.05 were investigated. The measurements were carried out in the energy range 6.0-30.0 eV at 300 K. The influence of Fe$\text{}^{2+}$(3d$\text{}^{6}$) states on the changes in the energy positions of the reflectivity maxima E'$\text{}_{1}$ , E'$\text{}_{1}$ + ∆, c, d, e, f, h and i is analysed. The obtained results confirm the band structure diagrams published previously.
Źródło:: Acta Physica Polonica A; 1992, 82, 2; 341-347
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Electrochemical Properties and Absorption Spectra of Conducting Films of Tetrathyotetracene Iodids
Autorzy:: Kaplunov, M. G.
Shamaev, S. N.
Powiązania:: https://bibliotekanauki.pl/articles/1933370.pdf
Data publikacji:: 1995-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 82.45.+z
78.40.Kc
Opis:: Films of tetrathyotetracene (TTT) iodides were obtained by doping of evaporated TTT films with iodine from I-containing solutions. TTT was evaporated onto a conducting substrate which then was used as an anode in KI solution. As a result of electrochemical reaction, iodine penetrated into the TTT film forming conducting TTT iodides. Cyclic voltamogrammes and absorption spectra show at least two stable forms of TTT-I$\text{}_{x}$, differing by iodine contents.
Źródło:: Acta Physica Polonica A; 1995, 87, 4-5; 811-814
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Optical Properties of Plastically Deformed Copper
Autorzy:: Trajić, J.
Rudolf, R.
Anžel, I.
Romčević, M.
Lazarević, N.
Mirić, M.
Lazarević, Z.
Hadžić, B.
Romčević, N.
Powiązania:: https://bibliotekanauki.pl/articles/1537910.pdf
Data publikacji:: 2010-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.20.-e
78.30.j
78.40.kc
Opis:: Pure copper (99.99), prepared in the sample of square cross-section (10 × 10 $mm^{2}$) and length about 50 mm, was extremely plastically deformed with the repeated application of Equal Channel Angular Pressing (ECAP). ECAP was applied as an effective technique for producing bulk nano-scaled structures. Optical properties of the sample were investigated using Raman spectroscopy. Two types of lines: narrow (with width of ≈ 7 $cm^{-1}$) and wide ( ≈ 40 $cm^{-1}$) are registered. Existence of two types of lines indicates that in the specimen exists nano-sized crystal structures of both Cu and CuO related with three dimensional amorphous boundary spaces, which indicates that plastic deformation of the sample did not lead to total amorphisation of the specimen.
Źródło:: Acta Physica Polonica A; 2010, 117, 5; 791-793
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Ellipsometric Measurements of Plastically Deformed Copper
Autorzy:: Mirić, M.
Rudolf, R.
Anžel, I.
Hadžić, B.
Romčević, M.
Trajić, J.
Romčević, N.
Powiązania:: https://bibliotekanauki.pl/articles/1795714.pdf
Data publikacji:: 2009-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.20.-e
78.40.Kc
68.35.Ct
Opis:: Chemically pure copper (99.99) prepared in the sample of square cross-section (10×10 $mm^{2}$) and length about 50 mm was extremely plastically deformed with the repeated application of equal channel angular pressing. Equal channel angular pressing was applied as an effective technique for producing bulk nanoscaled structures. It is well known that severe plastic deformation of metallic materials often leads to microstructure with ultrafine grains and cross-sections which remain about equal before and after deformation. Optical properties of the sample were studied using spectroscopic ellipsometry in UV-VIS range. The parameters of the sample like copper oxide and surface roughness overlayer were calculated using two-film model together with the Bruggeman effective medium approximation.
Źródło:: Acta Physica Polonica A; 2009, 116, 4; 715-717
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Structure of metal oxide multilayers deposited by sol-gel method on surface of NiTi shape memory alloy
Autorzy:: Osak, P.
Waś, J.
Łosiewicz, B.
Powiązania:: https://bibliotekanauki.pl/articles/1153876.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.40.Kc
81.20.Fw
62.20.fg
Opis:: The metal oxide layers were deposited onto the surface of NiTi shape memory alloy using sol-gel method. Single-, double- and triple-layers were obtained from a colloidal solution containing the precursor of zirconium tetrabutoxide and titanium tetrabutoxide, and annealed at 300°C for 1 h in argon. Phase composition was determined by grazing incidence X-ray diffraction. Surface roughness of the metal oxide layers were determined by atomic force microscopy. Surface morphology and thickness of the obtained layers were studied by scanning electron microscopy. It was found that all obtained layers revealed a composite structure, and were characterized by low surface roughness and thickness parameters. A homogeneous structure of the metal oxide layers deposited onto the surface of the medical NiTi alloy was ascertained only for double- and triple-layers.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 1069-1071
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Martensitic Transformation in Co-Based Ferromagnetic Shape Memory Alloy
Autorzy:: Kopeček, J.
Yokaichiya, F.
Laufek, F.
Jarošová, M.
Jurek, K.
Drahokoupil, J.
Sedláková-Ignácová, S.
Molnár, P.
Heczko, O.
Powiązania:: https://bibliotekanauki.pl/articles/1418445.pdf
Data publikacji:: 2012-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.40.Kc
61.05.fm
81.30.Kf
81.40.Ef
Opis:: The $Co_{38}Ni_{33}Al_{29}$ alloy in both powder and bulk state was investigated in the presented study using neutron diffraction on E9 high resolution powder diffractometer at HZB (BER II). The reverse martensitic phase transformation from the tetragonal martensitic phase into the cubic austenitic phase was observed with the phase coexistence within the temperatures from 183 K to 133 K. The fcc cobalt solid solution particles distributed in the transforming matrix remained in the same state through the whole temperature range. The obtained results agree with magnetization measurements on the same annealed sample. The powder data are compared with experiments on bulk sample, although there was a texture present. The obtained results provide further information about the phase transition process in this important class of ferromagnetic shape memory alloys.
Źródło:: Acta Physica Polonica A; 2012, 122, 3; 475-477
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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