Magnetism and structure of Cu2O1+x and 3d-doped TiO2-x nanopowders / Yermakov A. Ye.,Uimin M. A.,Mysik A. A.,Vykhodets V. B.,Kurennykh T. E.,Sokolov V. I.,Gaviko V. S.,Schegoleva N. N.,Gruzdev N. B. // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2007. - V. 310, l. 2, 3. - P. 2102-2104.

ISSN/EISSN:

0304-8853 / нет данных

Type:

Article

Abstract:

The structural features and magnetic properties of non-stoichiometric nanocrystalline semiconductors Cu2O1+x and TiO2-x doped with 3d-metals were investigated. The nanopowders were obtained by gas-phase synthesis in the oxygen contained argon atmosphere. For nanocrystalline samples Cu2O1+x with oxygen concentration more than stoichiometry (x > 0) magnetic hysteresis properties up to temperatures above room temperature (RT) were discovered. In the case of oxygen deficit in TiO2-x on the condition that rutile or anatase structure remains, the magnetic moment value grows and the magnetization curves at RT become nonlinear. On doping TiO2-x with cobalt, the magnetic moment value increases without indications of magnetic ordering at RT. In the optical absorption spectra of Cu2O1+x nanopowders at 77 K, the peaks in the range of wavelengths 480 and 460 nm were revealed, which are close to peaks at n = 1 of the blue and indigo exciton series for Cu2O single crystal. (c) 2006 Elsevier B.V. All rights reserved.

Author keywords:

nanoparticle; doped magnetic semiconductor; magnetic property; exciton EXCITON

DOI:

10.1016/j.jmmm.2006.10.780

Web of Science ID:

ISI:000247720400074

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAR
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	EXCITON
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	yermakov@imp.uran.ru
ResearcherID-Numbers	Sokolov, Viktor/J-9376-2013 Vykhodets, Vladimir/J-5231-2013 Mysik, Alexey/J-6716-2013 Uimin, Mikhail/K-1319-2013 Yermakov, Anatoly/J-5185-2013 Gruzdev, Nikita/J-9311-2013 Kurennykh, Tatiana/J-4828-2013 Gaviko, Vasilii/K-4632-2013
ORCID-Numbers	Sokolov, Viktor/0000-0002-6252-8914 Vykhodets, Vladimir/0000-0001-9522-9147 Mysik, Alexey/0000-0001-8779-8315 Uimin, Mikhail/0000-0003-3906-8101 Yermakov, Anatoly/0000-0001-6466-7064 Gruzdev, Nikita/0000-0001-7563-6685 Kurennykh, Tatiana/0000-0001-9859-3374 Gaviko, Vasilii/0000-0002-9841-9293
Number-of-Cited-References	7
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	13
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	185ON