Autor: Łukasiewicz, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Thermal Wave Measurements with a Mirage Detection for Investigation of Thermal Diffusivity of $GdCa_4O(BO_3)_3$ Single Crystals
Autorzy:: Bodzenta, J.
Kaźmierczak-Bałata, A.
Łukasiewicz, T.
Hofman, B.
Kucytowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1811523.pdf
Data publikacji:: 2008-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.55.Tv
42.70.Hj
65.40.-b
66.30.Xj
66.70.-f
Opis:: Single crystals of $GdCa_4O(BO_3)_3$ were examined to determine their thermal properties. Samples were grown by the Czochralski pulling technique. There were three types of samples: a pure crystal, the crystal doped with neodymium (4 at.% of Nd), and the third one doped with ytterbium (7 at.% of Yb). All samples were rectangular prisms with edges parallel to the axes of the optical indicatrix X, Y, Z (principal axes). The thermal diffusivity was determined by means of the thermal wave method with the optical detection of the temperature disturbance based on a mirage effect. Experimental results showed anisotropy of the thermal diffusivity. The thermal diffusivity along Y direction has the highest value while values obtained in X and Z axes are much lower. Dopants cause decrease in the thermal diffusivity for all investigated directions.
Źródło:: Acta Physica Polonica A; 2008, 114, 6A; A-27-A-32
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Cathodoluminescence Profiling for Checking Uniformity of ZnO and ZnCoO Thin Films
Autorzy:: Witkowski, B. S.
Łukasiewicz, M. I.
Wolska, E. A.
Kopalko, K.
Kowalski, B. J.
Guziewicz, E.
Godlewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/2048105.pdf
Data publikacji:: 2011-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.15.Gh
78.30.Fs
78.60.Hk
Opis:: We employ scanning electron microscopy and cathodoluminescence for evaluation of uniformity of ZnCoO films obtained by the atomic layer deposition. Cathodoluminescence quenching by Co ions allows us to detect (regions of weaker light emission) Co accumulations, with the resolution limited by diffusion length of secondary carriers.
Źródło:: Acta Physica Polonica A; 2011, 119, 5; 675-677
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: ZnCoO Films by Atomic Layer Deposition - Influence of a Growth Temperature οn Uniformity of Cobalt Distribution
Autorzy:: Łukasiewicz, M.
Witkowski, B.
Godlewski, M.
Guziewicz, E.
Sawicki, M.
Paszkowicz, W.
Łusakowska, E.
Jakieła, R.
Krajewski, T.
Kowalik, I.
Kowalski, B.
Powiązania:: https://bibliotekanauki.pl/articles/1791350.pdf
Data publikacji:: 2009-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.55.Ln
68.55.Nq
78.66.Hf
81.15.Kk
Opis:: We report on the structural, electrical and magnetic properties of ZnCoO thin films grown by atomic layer deposition method using reactive organic precursors of zinc and cobalt. As a zinc precursor we applied either dimethylzinc or diethylzinc and cobalt(II) acetyloacetonate as a cobalt precursor. The use of these precursors allowed us the significant reduction of a growth temperature to 300°C and below, which proved to be very important for the growth of uniform films of ZnCoO. Structural, electrical and magnetic properties of the obtained ZnCoO layers will be discussed based on the results of secondary ion mass spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, atomic force microscopy, Hall effect and SQUID investigations.
Źródło:: Acta Physica Polonica A; 2009, 116, 5; 921-923
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: (Zn,Cu)O Films by Atomic Layer Deposition - Structural, Optical and Electric Properties
Autorzy:: Łukasiewicz, M.
Witkowski, B.
Wachnicki, Ł.
Kopalko, K.
Gierałtowska, S.
Wittlin, A.
Jaworski, M.
Guziewicz, E.
Godlewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/1492571.pdf
Data publikacji:: 2011-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.55.Ln
68.55.Nq
78.66.Hf
81.15.Kk
Opis:: ZnCuO thin films have been deposited on silicon, glass and quartz substrates by atomic layer deposition method, using reactive organic precursors of zinc and copper. As zinc and copper precursors we applied diethylzinc and copper(II) acetyloacetonate. Structural, electrical and optical properties of the obtained ZnCuO layers are discussed based on the results of scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, atomic force microscopy, the Hall effect and photoluminescence investigations.
Źródło:: Acta Physica Polonica A; 2011, 120, 6A; A-034-A-036
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Spectroscopic and Laser Properties of LiNbO$\text{}_{3}$:Dy$\text{}^{3+}$ Crystals
Autorzy:: Malinowski, M.
Myziak, P.
Piramidowicz, R.
Pracka, I.
Łukasiewicz, T.
Surma, B.
Kaczmarek, S.
Kopczyński, K.
Mierczyk, Z.
Powiązania:: https://bibliotekanauki.pl/articles/1945542.pdf
Data publikacji:: 1996-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.55.Ht
78.40.Ha
78.47.+p
78.55.Hx
Opis:: The spectroscopic properties of trivalent dysprosium (Dy$\text{}^{3+}$) doped LiNbO$\text{}_{3}$ crystals have been investigated at various temperatures. Absorption, emission, excitation and lifetime measurements have been performed and discussed in the framework of Judd-Ofelt approach. The stimulated emission cross sections of the strongest transitions of Dy $\text{}^{3+}$ ion have been estimated. A stimulated emission has been demonstrated in the near infrared.
Źródło:: Acta Physica Polonica A; 1996, 90, 1; 181-189
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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