Low-temperature ferromagnetic resonance in bare and SiO2 coated La0.775</sub<> Sr0.225 MnO3 nanoparticles

La_0.775Sr_0.225MnO₃ nanoparticles were synthesized by sol-gel method with heat treatment at T = 1073 K and covered with silica shells of various thicknesses. Analysis of their experimental ferromagnetic resonance spectra was carried out in the temperature range of 77–290 K. The linewidth of absorption curves changes in a nonlinear manner in coated samples in the temperature range of 230 K ≤ T ≤ 290 K. Such changes indicate the appearance of external stresses between nanoparticles due to the difference in the thermal expansion coefficients of the two materials.

Key words: nanoparticles, nanopowders, ferromagnetic resonance, microwave frequencies, low temperatures.

References

1. V. Dyakonova, A. Ślawska-Waniewska, N. Nedelko, E. Zubov, V. Mikhaylov, K. Piotrowski, A. SzytuŁa, S. Baran, W. Bazela, Z. Kravchenko, P. Aleshkevich, A. Pashchenko, K. Dyakonov, V. Varyukhin, and H. Szymczak, J. Magn. Magn. Mater. 322, 3072 (2010). CrossRef Google Scholar

2. Yu. Shlapa, S. Solopan, A. Belous, and A. Tovstolytkin, Nanoscale Res. Lett. 13, 13 (2018). CrossRef Google Scholar

3. Yu. Shlapa, S. Solopan, A. Bodnaruk, M. Kulyk, V. Kalita, Yu. Tykhonenko-Polishchuk, A. Tovstolytkin, and A. Belous, Nanoscale Res. Lett. 12, 100 (2017). CrossRef Google Scholar

4. V. N. Krivoruchko, A. I. Marchenko, and A. A. Prokhorov, Fiz. Nizk. Temp. 33, 578 (2007) [Low Temp. Phys. 33, 433 (2007)]. CrossRef Google Scholar

5. E. G. Bereznyak, E. V. Dukhopelnikov, D. A. Pesina, N. A. Gladkovskaya, A. S. Vakula, T. D. Kalmykova, S. I. Tarapov, S. D. Polozov, N. V. Krasnoselsky, A. G. Belous, and S. A. Solopan, BioNanoScience 9, 406 (2019). CrossRef Google Scholar

6. A. Rostamnejadi, M. Venkatesan, H. Salamati, K. Ackland, H. Gholizadeh, P. Kameli, and J. M. D. Coey, J. Appl. Phys. 121, 173902 (2017). CrossRef Google Scholar

7. T. V. Kalmykova, S. I. Tarapov, S. V. Neduch, V. N. Krivoruchko, I. A. Danilenko, V. V. Burchovetckii, and D. G. Gurtovoj, Funct. Mater. 19, 486 (2012). Google Scholar

8. Yu. Yu. Shlapa, S. A. Solopan, and A. G. Belous, Theor. Exp. Chem. 54, 92 (2018). CrossRef Google Scholar

9. K. Zhang, T. Holloway, J. Pradhan, M. Bahoura, R. Bah, R. R. Rakhimov, A. K. Pradhan, R. Prabakaran, and G. T. Ramesh, J. Nanosci. Nanotechnol. 10, 5520 (2010). CrossRef Google Scholar

10. M. Rubinstein, V. G. Harris, and P. Lubitz, J. Magn. Magn. Mater. 234, 306 (2001). CrossRef Google Scholar

11. K. Yu. Sova, A. S. Vakula, S. I. Tarapov, АG Belous, and S. A. Solopan, Fiz. Nizk. Temp. 47, 241 (2021) [Low Temp. Phys. 47, 220 (2021)]. CrossRef Google Scholar

12. S. V. Vonsovsky, Magnetism (Nauka, Moscow, 1971) [in Russian]. Google Scholar

13. S. Mørup, M. F. Hansen, and C. Frandsen, Beilstein J. Nanotechnol. 1, 182 (2010). CrossRef Google Scholar

14. A. G. Gurevich and G. A. Melkov, Magnetization Oscillations and Waves (CRS Press, London, 1996). CrossRef Google Scholar

15. T. Kalmykova, A. Vakula, S. Nedukh, S. Tarapov, A. Belous, and O. Yelenich, Funct. Mater. 23, 618 (2016). CrossRef Google Scholar

16. АS Vakula, АG Belous, ТV Кalmykova, S. I. Petrushenko, V. N. Sukhov, and S. I. Тarapov, Telecom. Rad. Eng. 77, 257 (2018). CrossRef Google Scholar

17. Ferromagnetic Resonance—Theory and Applications, edited by Ohn Yalçın, (InTech, Croatia, 2013). CrossRef Google Scholar

18. M. Miliaev, A. Vakula, S. Tarapov, A. Belous, and S. Solopan, Funct. Mater. 26, 282 (2019). CrossRef Google Scholar

19. A. S. Vakula, ОА Kravchuk, S. I. Tarapov, and A. G. Belous, Radiofiz. Electron. 25, 54 (2020) [in Russian]. CrossRef Google Scholar

20. C. Haase and U. Nowak, Phys. Rev. B 85, 045435 (2012). CrossRef Google Scholar

21. A. S. Vakula, Radiofiz. Electron. 20, 62 (2015) [in Russian]. CrossRef Google Scholar

22. А Anders, A. Vakula, S. Tarapov, and A. Belous, Telecom. Rad. Eng. 75, 1849 (2016). CrossRef Google Scholar

23. R. B. Morgunov, A. I. Dmitriev, G. I. Dzhardimalieva, A. D. Pomogailo, A. S. Rozenberg, Y. Tanimoto, M. Leonowicz, and E. Sowka, Fizika Tverdogo Tela 49, 1436 (2007) [in Russian]. Google Scholar

24. T. Kalmykova, A. Vakula, S. Nedukh, S. Tarapov, A. Belous, V. Krivoruchko, and R. Suhov, Funct. Mater. 25, 241 (2018). CrossRef Google Scholar

25. M. F. Hansen and S. Mørup, J. Magn. Magn. Mater. 203, 214 (1999). CrossRef Google Scholar

Low-temperature ferromagnetic resonance in bare and SiO2 coated La0.775 Sr0.225 MnO3 nanoparticles

Low-temperature ferromagnetic resonance in bare and SiO₂ coated La_{0.775 Sr_0.225 MnO₃ nanoparticles}