5 research outputs found
Magnetic Anisotropy of Ultra-small Nanocrystals of CoFe2O4
Ferrimagnetic nanoparticles of CoFe2O4 with dimensions of 4-16 nm were synthesized by pyrolysis of a
mixture of acetylacetonates of iron and cobalt. In the temperature range 300-500 K investigated field dependence
of magnetization up o 18 kOe. Found a significant contribution of "surface" anisotropy to the effective
anisotropy of the nanoparticles.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3536
The synthesis of TiAlN composites by condensation of the different arc plasma flows
Some properties of the arc-vapour deposited TiAlN films, obtained both β by condensation of the different and combined titanium and aluminium plasma flows, have been investigated. The different flows was provided by two arc evaporators with titanium and aluminium cathodes, at that, the aluminium plasma was passed through the curvilinear plasma filter. The combined titanium-aluminium plasma was generated by single evaporator with the alloyed TiAl cathodes, which have a volumetric content of aluminium 50 %. The growth rates, surface morphology and the Vickers hardness of the TiAlN films, obtained under the various conditions, have been analyzed. The comparative cutting tool trials with the cemented carbide drills, covered by TiN, TiCN and TiAlN were conducted. It is shown, that the TiAlN film compositions, condensed from different plasma flows with the filtering aluminium plasma, are more profitable and has much higher characteristics, than films, obtained from alloyed TiAl cathodes.ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡΠ² TiAlN ΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ
ΡΠ· ΠΎΠΊΡΠ΅ΠΌΠΈΡ
Ρ ΡΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ
ΠΏΠΎΡΠΎΠΊΡΠ² ΡΠΈΡΠ°Π½ΠΎΠ²ΠΎΡ ΡΠ° Π°Π»ΡΠΌΡΠ½ΡΡΠ²ΠΎΡ ΠΏΠ»Π°Π·ΠΌΠΈ. ΠΠ΅Π½Π΅ΡΡΠ²Π°Π½Π½Ρ ΠΎΠΊΡΠ΅ΠΌΠΈΡ
ΠΏΠΎΡΠΎΠΊΡΠ² Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΡΠ²Π°Π»ΠΎΡΡ Π΄Π²ΠΎΠΌΠ° Π²Π°ΠΊΡΡΠΌΠ½ΠΎ-Π΄ΡΠ³ΠΎΠ²ΠΈΠΌΠΈ Π²ΠΈΠΏΠ°ΡΠΎΠ²ΡΠ²Π°ΡΠ°ΠΌΠΈ Π· ΡΠΈΡΠ°Π½ΠΎΠ²ΠΈΠΌ Ρ Π°Π»ΡΠΌΡΠ½ΡΡΠ²ΠΈΠΌ ΠΊΠ°ΡΠΎΠ΄Π°ΠΌΠΈ, ΠΏΡΠΈΡΠΎΠΌΡ, Π°Π»ΡΠΌΡΠ½ΡΡΠ²Π° ΠΏΠ»Π°Π·ΠΌΠ° ΠΏΡΠΎΡ
ΠΎΠ΄ΠΈΠ»Π° ΡΠ΅ΡΠ΅Π· ΠΊΡΠΈΠ²ΠΎΠ»ΡΠ½ΡΠΉΠ½ΠΈΠΉ ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΈΠΉ ΡΡΠ»ΡΡΡ, Π΄Π΅ ΠΎΡΠΈΡΠ°Π»Π°ΡΡ Π²ΡΠ΄ ΠΏΠ°ΡiΠ² Ρ ΠΌΠ°ΠΊΡΠΎΡΠ°ΡΡΠΎΠΊ. Π‘ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΠΉ ΠΏΠΎΡΡΠΊ ΡΠΈΡΠ°Π½-Π°Π»ΡΠΌΡΠ½ΡΡΠ²ΠΎΡ ΠΏΠ»Π°Π·ΠΌΠΈ ΡΡΠ²ΠΎΡΡΠ²Π°Π²ΡΡ ΠΎΠ΄Π½ΠΈΠΌ Π²ΠΈΠΏΠ°ΡΠΎΠ²ΡΠ²Π°ΡΠ΅ΠΌ Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ ΡΠΏΠ»Π°Π²Π½ΠΈΡ
ΠΊΠ°ΡΠΎΠ΄ΡΠ² TiAl, ΡΠΎ ΠΌiΡΡΠΈΠ»ΠΈ 50 ΠΎΠ±'ΡΠΌΠ½ΠΈΡ
% Π°Π»ΡΠΌΡΠ½ΡΡ. ΠΠΈΠ·Π½Π°ΡΠ΅Π½ΠΎ ΡΡiΠΉΠΊiΡΡΠ½i Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΡΠ²Π΅ΡΠ΄ΠΎΡΠΏΠ»Π°Π²Π½ΠΎΠ³ΠΎ ΡΠ½ΡΡΡΡΠΌΠ΅Π½ΡΡ, Π·ΠΌΡΡΠ½Π΅Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΈΡΡΡΠΌΠΈ TiAlN. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΠΎ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈ TiAlN, ΠΊΠΎΠ½Π΄Π΅Π½ΡΠΎΠ²Π°Π½Ρ Π· ΠΎΠΊΡΠ΅ΠΌΠΈΡ
ΠΏΠΎΡΠΎΠΊΡΠ² Π· ΡiΠ»ΡΡΡΠ°ΡiΡΡ Π°Π»ΡΠΌΡΠ½ΡΡΠ²ΠΎΡ ΠΏΠ»Π°Π·ΠΌΠΈ, Π±ΡΠ»ΡΡ ΡΠ΅Π½ΡΠ°Π±Π΅Π»ΡΠ½Ρ Ρ ΠΌΠ°ΡΡΡ Π±ΡΠ»ΡΡ Π²ΠΈΡΠΎΠΊΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, Π½iΠΆ ΠΏΠΎΠΊΡΠΈΡΡΡ, ΠΎΠ΄Π΅ΡΠΆΠ°Π½i Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ ΡΠΏΠ»Π°Π²Π½ΠΈΡ
ΠΊΠ°ΡΠΎΠ΄ΡΠ².ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΎΠ² TiAlN ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΊΠΎΠ½Π΄Π΅Π½ΡΠ°ΡΠΈΠ΅ΠΉ ΡΠ°Π·Π΄Π΅Π»ΡΠ½ΡΡ
ΠΈ ΡΠΎΠ²ΠΌΠ΅ΡΠ΅Π½Π½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ² ΡΠΈΡΠ°Π½ΠΎΠ²ΠΎΠΉ ΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΠ΅Π²ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΡ. ΠΠ΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°Π·Π΄Π΅Π»ΡΠ½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ² ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π»ΠΎΡΡ Π΄Π²ΡΠΌΡ Π²Π°ΠΊΡΡΠΌΠ½ΠΎ- The quantity of holes, N 5 10 15 Fig. 3. The quantity of holes, perforated in tempered steel (HRC 52) with a drills of Mitsubishi Carbide: β uncoated βTiN-coated coated; βTiCN βTiAlN non- filtering βTiAlN with Al-plasma filtering Π΄ΡΠ³ΠΎΠ²ΡΠΌΠΈ ΠΈΡΠΏΠ°ΡΠΈΡΠ΅Π»ΡΠΌΠΈ Ρ ΡΠΈΡΠ°Π½ΠΎΠ²ΡΠΌ ΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΠ΅Π²ΡΠΌ ΠΊΠ°ΡΠΎΠ΄Π°ΠΌΠΈ, ΠΏΡΠΈΡΠ΅ΠΌ, Π°Π»ΡΠΌΠΈΠ½ΠΈΠ΅Π²Π°Ρ ΠΏΠ»Π°Π·ΠΌΠ° ΠΏΡΠΎΡ
ΠΎΠ΄ΠΈΠ»Π° ΡΠ΅ΡΠ΅Π· ΠΊΡΠΈΠ²ΠΎΠ»ΠΈΠ½Π΅ΠΉΠ½ΡΠΉ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΡΠΉ ΡΠΈΠ»ΡΡΡ, Π³Π΄Π΅ ΠΎΡΠΈΡΠ°Π»Π°ΡΡ ΠΎΡ ΠΏΠ°ΡΠΎΠ² ΠΈ ΠΌΠ°ΠΊΡΠΎΡΠ°ΡΡΠΈΡ. Π‘ΠΎΠ²ΠΌΠ΅ΡΠ΅Π½Π½ΡΠΉ ΠΏΠΎΡΠΎΠΊ ΡΠΈΡΠ°Π½-Π°Π»ΡΠΌΠΈΠ½ΠΈΠ΅Π²ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΡ ΡΠΎΠ·Π΄Π°Π²Π°Π»ΡΡ ΠΎΠ΄Π½ΠΈΠΌ ΠΈΡΠΏΠ°ΡΠΈΡΠ΅Π»Π΅ΠΌ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΏΠ»Π°Π²Π½ΡΡ
ΠΊΠ°ΡΠΎΠ΄ΠΎΠ² TiAl Ρ ΠΎΠ±ΡΠ΅ΠΌΠ½ΡΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ 50%. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΡΡΠΎΠΉΠΊΠΎΡΡΠ½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΡΠ²Π΅ΡΠ΄ΠΎΡΠΏΠ»Π°Π²Π½ΠΎΠ³ΠΎ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ°, ΡΠΏΡΠΎΡΠ½Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡΠΌΠΈ TiAlN. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡ TiAlN, ΠΎΡΠ°ΠΆΠ΄Π΅Π½Π½ΡΠ΅ ΠΈΠ· ΡΠ°Π·Π΄Π΅Π»ΡΠ½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ² Ρ ΡΠ΅ΠΏΠ°ΡΠ°ΡΠΈΠ΅ΠΉ Π°Π»ΡΠΌΠΈΠ½ΠΈΠ΅Π²ΠΎΠΉ ΠΏΠ»Π°Π·ΠΌΡ, Π±ΠΎΠ»Π΅Π΅ ΡΠ΅Π½ΡΠ°Π±Π΅Π»ΡΠ½Ρ ΠΈ ΠΎΠ±Π»Π°Π΄Π°ΡΡ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΈΠΌΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°ΠΌΠΈ, ΡΠ΅ΠΌ ΠΏΠΎΠΊΡΡΡΠΈΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΏΠ»Π°Π²Π½ΡΡ
ΠΊΠ°ΡΠΎΠ΄ΠΎΠ²
Magnetic Anisotropy of Ultra-small Nanocrystals of CoFe2O4
Ferrimagnetic nanoparticles of CoFe2O4 with dimensions of 4-16 nm were synthesized by pyrolysis of a
mixture of acetylacetonates of iron and cobalt. In the temperature range 300-500 K investigated field dependence
of magnetization up o 18 kOe. Found a significant contribution of "surface" anisotropy to the effective
anisotropy of the nanoparticles.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3536
Influence of ZnO nanocrystals surface modification on structure and photovoltaic properties of MEH-PPV/nc-ZnO nanocomposite films
The influence of interface modifires based on perylen imide dyes and naphthyl phosphonic acid on MEH-PPV/nc-ZnO nanocomposite films morphology was stydied. The better phase compatibility between MEH-PPV and nc-ZnO was obtained if (PI1) and (PI2) were used as the IMs. Use of the IMs led to decrease the fluorescence lifetime quenching (Οβ) and to increase the quenching efficiencies (Ξ·q). It was demonstrated that all IMs increase JSC and VOC