Terbium oxide films grown by chemical vapor deposition from terbium(III) dipivaloylmethanate

被引:23
|
作者
Belaya, S. V. [1 ]
Bakovets, V. V. [1 ]
Boronin, A. I. [2 ]
Koshcheev, S. V. [2 ]
Lobzareva, M. N. [1 ]
Korolkov, I. V. [1 ]
Stabnikov, P. A. [1 ]
机构
[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
关键词
OXIDATION;
D O I
10.1134/S0020168514040037
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Terbium oxide films have been grown on Si(111) substrates by decomposition of Tb(dpm)(3) vapor in argon flow at Tb(dpm)(3) source temperatures of 170 and 190A degrees C and substrate temperatures from 470 to 550A degrees C. The films have been annealed in air at temperatures of 400, 650, and 800A degrees C. X-ray diffraction characterization results show that the films grown by chemical vapor deposition consist of cubic Tb2O3. The films annealed in air at 650 and 800A degrees C are isostructural with Tb4O7, and those annealed at 400A degrees C are isostructural with Tb11O20. According to X-ray photoelectron spectroscopy data, the 9-nm-thick surface layer of the Tb2O3 film has the correct stoichiometry O: Tb = 1.48, whereas the film annealed at 800A degrees C has O: Tb = 1.85. Raman spectroscopy data demonstrate that the concentration of carbon-containing species on the surface of the films decreases with decreasing substrate temperature and can be brought to zero by air annealing at 800A degrees C.
引用
收藏
页码:379 / 386
页数:8
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