Interionic potentials and localized vibrations in Al2O3 crystals with vacancies / Kislov AN,Mazurenko VG,Korzov KN,Kortov VS // PHYSICA B-CONDENSED MATTER. - 2004. - V. 352, l. 1-4. - P. 172-178.

ISSN/EISSN:

0921-4526 / нет данных

Type:

Article

Abstract:

Empirical parameters of interionic interactions in alpha-Al2O3 crystals were determined in terms of the shell model. The lattice dynamics of alpha-Al2O3 crystals with vacancies in different charge states was simulated using these parameters and the recursive method. Frequencies of defect-induced resonance vibrations in different directions were determined. Main features specific to vibration spectra of anion-nonstoichiometric alpha-Al2O3 crystals, which were due basically to changes in the effective force of interaction between vacancies and the nearest environment, were analyzed and explained. (C) 2004 Elsevier B.V. All rights reserved.

Author keywords:

localized modes; point defects; lattice dynamics SHELL-MODEL CALCULATION; LATTICE-DYNAMICS; CORUNDUM CRYSTALS; SAPPHIRE CORUNDUM; PHONON DISPERSION; ALPHA-AL2O3; STATES; SCATTERING; CENTERS

DOI:

10.1016/j.physb.2004.07.007

Web of Science ID:

ISI:000224735100023

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT 30
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	SHELL-MODEL CALCULATION; LATTICE-DYNAMICS; CORUNDUM CRYSTALS; SAPPHIRE CORUNDUM; PHONON DISPERSION; ALPHA-AL2O3; STATES; SCATTERING; CENTERS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	ank@dpt.ustu.ru mvg@dpt.ustu.ru kzv@dpt.ustu.ru kortov@dpt.ustu.ru
Number-of-Cited-References	28
Usage-Count-Since-2013	2
Journal-ISO	Physica B
Doc-Delivery-Number	865WO