december 22, 2024

RU/EN

Headings of Vestnik

September 2015, № 9 (184)

Zakharov P.V., Eremin A.M., Manakov N.A., Starostenkov M.D., Markidonov A.V. BEHAVIOR OF THE QUASI-BREATHER MODE IN PT₃AL CRYSTAL WITH THE POINT DEFECTSNowadays the localized oscillations of the atoms or separate atomic groups are being studied in the perfect chips what makes the usage of the acquired results more difficult when studying the real crystals with the deffects. In this researсh by the method of molecular dynamics we study influence of the point defects on the quasi-breather mode behavior in stoichiometry crystal A3B using Pt₃Al as an example. As point defects there are divacancies, trivacancies Pt in the crystal of Pt₃Al as well as interstitial atoms of Al that are placed into the tetrahedral vacuums. The considered model is a bulk stoichiometry crystal A₃B, where the atoms interact through Morse pair potential. It was found that point defects within Pt₃Al alloy substantially influence on the quasi-breather mode in the case of their close arrangement. The exposure is in the high-amplitude localized oscillations destruction with the further energy dispersion through the crystal. But it's worth to remark that while high-amplitude oscillations degradation dispersion predominantly takes place into Al sublattice where the energy stays localized because of the forbidden band availability in the phonon spectrum of Pt₃Al crystal during the long period of time. Besides it's established that there is a quasi-breather mode extended stability region near Pt divacancy and trivacancy. In the event of the observing at the point defect in the form of the interstitial Al atom, that is implantated into the tetrahedral vacuum such region does not exist. The acquired results should be counted while investigating the features and qualities of the real stoichiometry crystals А₃В.Key words: molecular dynamics, quasi-breather mode, point defects, discrete breathers, nonlinear dynamics.

Download

References:

1. Maradudin A., Montroll E., Weiss J. Dinamicheskaya the theory of a crystal lattice in harmonious approach. The lane from English N. V. Abarenkov, E.D. Trifonov under the editorship of M. N. Petrashen: M, World. — 1965. — 384 pages.

2. Flach, S., Gorbach A.V. Discrete breathers advancer in theory and application//Phys. Rep. — 2008. — 467. — P. 1-116.

3. Sievers A.J., Takeno S. Intrinsic Localized Modes in Anharmonic Crystals//Phys. Rev. Lett. — 1988. — V. 61. — No. 8. — P. 970-973.

4. Eisenberg H.S., Silberberg Y., Morandotti R., Boyd R. and Aitchison J.S. Discrete Spatial Solitons in Waveguide Arrays//Phys. Rev. Lett. — 1998. — V.81. — P. 3383.

5. Kivshar Yu.S., Agrawal G.P. Optical solitons//Academic Press. Amsterdam. — 2003. — 540 p.

6. Miroshnichenko, A.E. Flach S., Fistul M.V., Zolotaryuk Y., Page J.B.//Phys. Rev. — 2001. — E 64. — P. 600-601.

7. Schwarz U.T., English L.Q., and Sievers A.J. Experimental Generation and Observation of Intrinsic Localized Spin Wave Modes in an Antiferromagnet//Phys. Rev. Lett. — 1999. — V.83. — P. 223.

8. Kiselev S.A., Sievers A.J. Phys. Rev. — 1997, B 55, P. 5755.

9. Dmitriyev S.V., Hadeev L.Z. Characteristics of slot-hole discrete brizer in crystals with structure of NaCl//News of higher education institutions. Applied nonlinear dynamics. — 2010. — T. 18. — No. 6. — C. 85-92.

10. Khadeeva L.Z., Dmitriev S.V. Discrete breathers in crystals with NaCl//Phys. Rev. — 2010. — B 81. — P. 214306.

11. Dmitriyev S.V., Hadeev L.Z. Slot-hole discrete brizer in a two-component two-dimensional crystal in a condition of thermal balance//Physics of a solid body. — 2011. — T. 53. — No. 7. — Page 1353-1358.

12. Medvedev N. N., Starostenkov M. D., Zakharov P.V., Markidonov A.V. About localization of energy of nonlinear and linear fluctuations of atoms in a model crystal lattice of structure of A3B//Letters on materials. — T. 3. — Vyp. 1. — 2013. — Page 34-37.

13. Medvedev N. N., Starostenkov M. D., Zakharov P.V., Pozhidayeva O. V. The localized oscillatory fashions in two-dimensional model of the ordered Pt3Al alloy//Letters in the magazine of technical physics. — 2011. — T. 37. — Vyp. 3. — Page 7-15.

14. Medvedev N.N., Starostenkov M.D., Potekaev A.I., Zakharov P.V., Markidonov A.V., Eremin. A.M. Energy Localization in the Ordered Condensed Systems: A3B Alloys With L12 Superstructure//Russian Physics Journal. — July 2014. — Volume 57, Issue 3. — P. 387-395.

15. Zakharov P.V., Starostenkov M. D., Eryomin A.M., Markidonov of A.V. Povedeniye of the nonlinear localized fashion near complexes of vacancies in Pt3Al crystal//Fundamental problems of modern materials science. — 2014. — T. 11, No. 2. — Page 260-264.

16. Zakharov P.V., Starostenkov M. D., Medvedev N. N., Eryomin A.M., Markidonov A.V. An antisymmetric discrete brizer in Pt3Al crystal//Fundamental problems of modern materials science. — 2014. — T. 11, No. 3. — Page 388-393.

17. Zakharov P.V., Starostenkov M. D., Medvedev N. N., Eryomin A.M., Markidonov A.V. Influence of low temperatures on characteristics of a discrete brizer in Pt3Al crystal//Fundamental problems of modern materials science. — 2014. — T. 11, No. 4. — Page 533-536.

18. Zakharov P.V., Medvedev N.N., Starostenkov M.D., Eremin A.M. Prospects for the Use of Dynamic Discrete Breathers in Nanofibers Crystals Stoichiometry A3B With the Structure of L12//2015 International Siberian Conference on Control and Communications (SIBCON). Proceedings. — Omsk: Omsk State Technical University. Russia, Omsk, May 21−23, 2015. IEEE Catalog Number: CFP15794-CDR. ISBN: 978-1-4799-7102-2.

19. Zakharov P.V., Eryomin A.M., Starostenkov M. D., Markidonov A.V., Lutsenko of I.S. Kvazibrizernye of a state in A3B crystal with dot defects//Fundamental problems of modern materials science. — 2015. — T. 12, No. 2. — Page 146-152.

20. Zakharov P.V., Starostenkov M. D., Dmitriyev S.V., Medvedev N. N., Eryomin A.M. Modeling of interaction of discrete brizer of various type in Pt3Al crystal nanofibre//the Magazine of experimental and theoretical physics. — 2015. — T. 148. — Vyp. 2(8). — Page 252-257.

21. Tetelbaum D. I., Kurilchik E.V., Mendeleva Yu.A. Effekt of long-range action at low-intensive radiation of solid bodies//the Surface. X-ray sinkhrotronny and neutron researches. — 2009. — No. 3. — Page 94 — 103.

22. Potters P.P., Dzhelaukhov G. S., Chechin G. M. Discrete brizer in mononuclear chains//News of higher education institutions: Applied nonlinear di of a hint. — 2007. — T. 6. — Page 57-74.

23. Bezuglova G. S., Goncharov P.P., Gurov Yu.V., G. M Chechen. Discrete brizer in scalar dynamic models on a flat square lattice//News of higher education institutions: Applied nonlinear dynamics. — 2011. — T. 19. — Page 89-103.

24. A.A. Ilyushin. Mechanics of the continuous environment. M, publishing house of MSU. — 1990. — 310 pages.

25. L.I. Sedov. Mechanics of the continuous environment. T. 1. M, Science. — 1984. — 492 pages.

About this article

Authors: Zaharov P.V., Eremin A.M., Manakov N.A., Starostenkov M.D., Markidonov A.V.

Year: 2015

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

© Электронное периодическое издание: ВЕСТНИК ОГУ on-line (VESTNIK OSU on-line), ISSN on-line 1814-6465
Зарегистрировано в Федеральной службе по надзору в сфере связи, информационных технологий и массовых коммуникаций
Свидетельство о регистрации СМИ: Эл № ФС77-37678 от 29 сентября 2009 г.
Учредитель: Оренбургский государственный университет (ОГУ)
Главный редактор: С.А. Мирошников
Адрес редакции: 460018, г. Оренбург, проспект Победы, д. 13, к. 2335
Тел./факс: (3532)37-27-78 E-mail: vestnik@mail.osu.ru