Journal of Radio Electronics. eISSN 1684-1719. 2024. №6
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2024.6.2
SHOCK EXCITATION OF MAGNETOELASTIC SYSTEM
BY PERIODIC SUCCESSION
OF ULTRA-SHORT FIELD PULSES
F.F. Asadullin1, V.S. Vlasov1, D.A. Pleshev1,
V.G. Shavrov2, V.I. Shcheglov2
1 Institute of Forest
167982, Russia, Syktyvkar, st. Lenina, 392 Institute of Radio Engineering and Electronics RAS,
125009, Russia, Moscow, st. Mokhovaya, 11-7
Thepaperwasreceived April 2, 2024.
Abstract. The nonlinear magnetization precession in normal magnetized ferrite film which has magnetic, elastic and magnetoelastic properties is investigated. The excitation field is presented as a vibration on resonance frequency which is modulated by short pulses which frequency is more lower than resonance frequency. It is proposed the formation procedure of periodic succession of ultra-short pulses by the involution to even degree of modulation signal sine. It is found two different cases of excitation: first when modulate pulse duration is larger than initial signal period and second when modulate pulse duration is smaller than initial signal period. In the first case the modulated signal has the form of main frequency vibrations tandem and in the second case the modulated signal has the form of unit sign-variation pulse. It is investigated the time development of magnetic and elastic vibrations whish are firmed by excitation field. It is shown that in the first case the magnetization vibrations at first hat sharp jump to upward and after this decreases by exponent. In this case the elastic vibrations after the same jump at first increases and then decreases by exponent. The elastic vibrations behaviour is interpret as energy pump from magnetic system to elastic system. In the second case the initial jump both vibrations is absent. It is investigated the degree modulation index influence to excited vibrations. It is shown that by increasing of this index the amplitude of magnetic and elastic vibrations decreases. It is investigated the magnetization excited vibrations character by different degree of magnetoelastic connection. It is introduced the coefficient multiple of magnetoelastic constant which is equal to ratio of considered constant to value of magnetoelastic constant of yttrium iron garnet. It is shown that by increasing of multiple coefficient the magnetization vibrations period is increased. It is found the sharp increasing the period by determined value of multiple coefficient which has a threshold character. It is investigated the excitation of magnetization in large time interval when the multiple coefficient is above the threshold value. It is found the principle difference between two cases when pulse duration is large or smaller as alternating field period. It is shown that in the first case the magnetization vibrations has the character of equilibrium position precession in conditions of orientational transition. In the second case the magnetization vibrations has the form of periodic re-orientational jumps from one equilibrium position to another. It is mentioned some properties of observed phenomena and proposed some recommendations for further investigations.
Keywords: ferromagnetic resonance, nonlinear vibrations, orientational transition.
Financing: The work was carried out within the framework of the state assignment of the V.A. Kotelnikov Institute of Radio Engineering and Electronics of the Russian Academy of Sciences.
Correspondingauthor: Shcheglov Vladimir Ignatyevich, vshcheg@cplire.ru
References
1. Kirilyuk A., Kimel A.V., Rasing T. Ultrafast optical manipulation of magnetic order. // Rev. Mod. Phys. 2010. V.82. №3. P.2731.
2. Vlasov V.S., Golov A.V., Kotov L.N., Shcheglov V.I., Lomonosov A.M., Temnov V.V. The modern problems on ultrafast magnetoacoustics (Review). // Acoustic Physics. 2022. V.68. №1. P.18-47.
3. Bigot J.V., Vomir M. Ultrafast magnetization dynamics of nanostructures. // Ann. Phys. (Berlin). 2013. V.525. №1-2. P.2.
4. Jäger J.V., Scherbakov A.V., Linnik T.I., Yakovlev D.R., Wang M., Wadley P., Holy V., Cavill S.A., Akimov A.V., Rushforth A.W., Bayer M. Picosecond inverse magnetostriction in garfenol thin films. // Appl. Phys. Lett. 2013. V.103. №3. P.032409(5).
5. Janusonis J., Chang C.L., Jansma T., Gatilova A., Vlasov V.S., Lomonosov A.M., Temnov V.V., Tobey R.I. Ultrafast magnetoelastic probing of surface acoustic transients. // Phys. Rev. B. 2016. V.94. №2. P.024415(7).
6. Walowski J., Münzenberg M. Perspective: Ultrafast magnetism and THz spintronics. // J. Appl. Phys. 2016. V.120. №14. P.140901(16).
7. Dreher L., Weiler M., Pernpeintner M., Huebl H., Gross R., Brandt M.S., Goennenwein S.T.B. Surface acoustic wave driven ferromagnetic resonance in nickel thin films: theory and experiment. // Phys. Rev. B. 2012. V.86. №13. P.134415(13).
8. Thevenard L., Gourdon C., Prieur J.Y., Von Bardeleben H.J., Vincent S., Becerra L., Largeau L., Duquesne J.Y. Surface-acoustic-wave-driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers. // Phys. Rev. B. 2014. V.90. №9. P.094401(8).
9. Chernov A.I., Kozhaev M.A., Vetoshko P.M., Zvezdin A.K., Belotelov V.I., Dodonov D.V., Prokopov A.R., Shumilov A.G., Shaposhnikov A.N., Berzhanskii V.N. Local probing of magnetic films by optical excitation of magnetostatic waves. // Physics of the Solid State. 2016. V.58. №6. P.1128.
10. Vlasov V.S., Makarov P.A., Shavrov V.G., Shcheglov V.I. The orientational characteristics of magnetoelastic waves excitation by femtosecond light pulses. Zhurnal Radio electroniki – Journal of Radio Electronics. 2017. №6. Available at: http://jre.cplire.ru/jre/jun17/5/text.pdf (In Russian).
11. Vlasov V.S., Makarov P.A., Shavrov V.G., Shcheglov V.I. The vibrations of magnetization excited by shock influence of elastic displacement. Zhurnal Radio electroniki – Journal of Radio Electronics. 2018. №4. Available at: http://jre.cplire.ru/jre/apr18/3/text.pdf (In Russian).
12. Vlasov V.S., Kotov L.N., Shavrov V.G., Shcheglov V.I. Nonlinear excitation of hypersound in a ferrite plate under the ferromagnetic-resonance conditions. // Journal of Communications Technology and Electronics. 2009. V.54. №7. P.821.
13. Korn G.A., Korn T.M. Mathematical handbook for scientists and engineers. New York. McGraw-Hill Book Company. 1968.
14. Vlasov V.S., Kotov L.N., Shavrov V.G., Shcheglov V.I. Nonlinear installation dynamics of magnetization in ferrite plate with magneto-elastic properties in condition of orientation transition. // Journal of Communications Technology and Electronics. 2010. V.55. №6. P.689-701.
15. Vlasov V.S., Kotov L.N., Shavrov V.G., Shcheglov V.I. Forced nonlinear magnetization vector precession in condition of orientation transition.// Journal of Communications Technology and Electronics. 2011. V.56. №1. P.84-96.
16. Vlasov V.S., Kotov L.N., Shavrov V.G., Shcheglov V.I. Multi-regime character of nonlinear magnetization second order precession in condition of orientation transition. // Journal of Communications Technology and Electronics. 2011. V.56. №9. P.1120-1131.
17. Shavrov V.G., Shcheglov V.I. Ferromagnetic resonance in conditions of orientation transition. M.: Fizmatlit. 2018.
For citation:
Asadullin F.F., Vlasov V.S., Pleshev D.A., Shavrov V.G., Shcheglov V.I. Shock excitation of magnetoelastic system by periodic succession of ultra-short field pulses. // Journal of Radio Electronics. – 2024. – №. 6. https://doi.org/10.30898/1684-1719.2024.6.2 (In Russian)