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Fizika Tverdogo Tela, 2017 Volume 59, Issue 7, Pages 1393–1405 (Mi ftt9532)

This article is cited in 4 papers

Low dimensional systems

Structural and magnetic–luminescent properties of carbon-doped aluminum oxide

V. G. Ilvesab, M. G. Zuevbc, A. M. Murzakaevab, S. V. Pryanichnikovd, S. Yu. Sokovninab

a Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Ekaterinburg
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg
c Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg
d Institute of Metallurgy, Ural Division of the Russian Academy of Sciences, Yekaterinburg

Abstract: Three-phase (corundum + $\delta$ phase + amorphous phase) amorphous–nanocrystalline powders of pure and carbon-doped Al$_{2}$O$_{3}$ ($x_{C}$ = 1.07–6.6 wt %) have been produced by pulsed electron beam evaporation in vacuum. The corundum hexagonal nanocrystals in the Al$_{2}$O$_{3}$–C nanopowder ($x_C$ = 1.07 wt %) had sizes about 5 nm. The carbon solubility boundary in the Al$_{2}$O$_{3}$ lattice was lower than 1.07 wt % C. The dependence of the form of the cathode-luminescence spectra and the phase compositions of the prepared Al$_{2}$O$_{3}$ and Al$_{2}$O$_{3}$–C nanopowders has been found. The absence of $R$ lines of Cr$^{3+}$ ions in photoluminescence spectra of doped nonopowders has been detected. All the nanopowders of the pure and C-doped Al$_{2}$O$_{3}$ were ferromagnets at room temperature with the maximum magnetization of $\sim$0.12 emu/g at $x_C$ = 6.6 wt %.

Received: 10.03.2016

DOI: 10.21883/FTT.2017.07.44605.090


 English version:
Physics of the Solid State, 2017, 59:7, 1420–1432

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