Surface study of Tb0,16Ho0,84Fe2,00-xCox intermetallics
A.S. Strechen, Yu..A. Kurnosov, A.Yu.. Karpenkov, A.I. Ivanova, A.I. Sinkevich, E.M. Semenova, Yu..G. Pastushenkov
Tver State University
Abstract: The results of the study of the crystal structure, magnetic properties, as well as of micro-and domain structure of the surface of a series of compounds Tb0,16Ho0,84Fe2,00-xCox (x = 0,1; 0,2; 0,3; 0,4) are presented. It is shown that an increase in the relative content of cobalt leads to a decrease in the crystal lattice parameter a from 7,310 Å at x = 0,1 to 7,304Å at x = 0,4. At the same time, the Curie temperature increases accordingly from 581 to 614 K. It has been experimentally established that, as x increases, the specific saturation magnetization decreases linearly with increasing temperature. It has been found that the mechanical impact on the surface of sections during polishing can lead to the appearance of a regular microrelief. The results of studying the domain structure of the surface are presented. It is shown that the configuration and linear dimensions of the domains change as a result of the impact on the surface of the samples.
Keywords: intermetallics, Laves phase, magnetic properties, surface, microstructure, domain structure
- Artem S. Strechen – 2st year graduate student, Condensed Matter Physic Department, Tver State University
- Yuriy A. Kurnosov – 2st year graduate student, Condensed Matter Physic Department, Tver State University
- Aleksey Yu.. Karpenkov – Ph. D., Docent, Condensed Matter Physics Department, Tver State University
- Alexandra I. Ivanova – Ph. D., Docent, Applied Physic Department, Tver State University
- Artem I. Sinkevich – 2st year postgraduate student, Condensed Matter Physic Department, Tver State University
- Elena M. Semenova – Ph. D., Docent, Condensed Matter Physic Department, Tver State University
- Yuriy G. Pastushenkov – Dr. Sc., Full Professor, Condensed Matter Physic Department, Tver State University
Strechen, A.S. Surface study of Tb0,16Ho0,84Fe2,00-xCox intermetallics / A.S. Strechen, Yu..A. Kurnosov, A.Yu.. Karpenkov, A.I. Ivanova, A.I. Sinkevich, E.M. Semenova, Yu..G. Pastushenkov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2022. — I. 14. — P. 243-253. DOI: 10.26456/pcascnn/2022.14.243. (In Russian).
Full article (in Russian): download PDF file
1. Stein F., Leineweber A. Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties, Journal of Materials Science, 2021, vol. 56, issue 9, pp. 5321-5427. DOI: 10.1007/s10853-020-05509-2.
2. Koon N.C., Williams C.M., Das B.N. Giant magnetostriction materials, Journal of Magnetism and Magnetic Materials, 1991, vol. 100, issue 1-3, pp. 173-185. DOI: 10.1016/0304-8853(91)90819-V.
3. Hathaway K.B., Clark A.E. Magnetostrictive materials, MRS Bulletin, 1993, vol. 18, issue 4, pp. 34-41. DOI: 10.1557/S0883769400037337.
4. Stein F., Palm M., Sauthoff G. Structure and stability of Laves phases. Part I. Critical assessment of factors controlling Laves phase stability, Intermetallics, 2004, vol. 12, issue 7-9, pp. 713-720. DOI: 10.1016/j.intermet.2004.02.010.
5. Berry R.L., Raynor G.V. The crystal chemistry of the Laves phases, Acta Crystallographica, 1953, vol. 6. issue 2, pp. 178-186. DOI: 10.1107/S0365110X53000557.
6. Tereshina I., Nikitin S., Tulyakov A., et al. Rare earth compounds with compensated magnetic anisotropy and giant magnetostriction, Journal of Alloys and Compounds, 2008, vol. 451, issue 1-2, pp. 481-483. DOI: 10.1016/j.jallcom.2007.04.105.
7. Hathaway K., Cullen J. Magnetic and magnetovolume properties of RCo2 compounds and alloys from energy band structure, Journal of Physics: Condensed Matter, 1991, vol. 3, issue 45, pp. 8911-8916. DOI: 10.1088/0953-8984/3/45/013.
8. Politova G.A., Karpenkov A.Y., Kaminskaya T.P. et al. Struktura i fazovye prevrashcheniya vysokomagnitostriktsionnogo splava sistemy samarij-zhelezo so strukturoj faz Lavesa [High-magnetostriction Laves-phase alloy of the samarium-iron system: the structure and phase transformations], Nauchno-tekhnicheskie vedomosti SPbGPU. Fiziko-matematicheskie nauki [St. Petersburg Polytechnical State University Journal. Physics and Mathematics], 2019, vol. 12, no. 1, pp. 28-38. DOI: 10.18721/JPM.12102.
9. Liu X., Lin K., Gao Q.,et al. Structure and phase transformation in the giant magnetostriction Laves-phase SmFe2, Inorganic Chemistry, 2018, vol. 57, issue 2, pp. 689-694. DOI: 10.1021/acs.inorgchem.7b02525.
10. Liu J.J., Wang R., Ying H.Y., Liu X.C., Du J. Structural, magnetic and magnetostrictive properties of Co-doped Tb1-xHoxFe2 (0≤ x≤ 1.0) alloys, Journal of Applied Physics, 2011, vol. 110, issue 7, pp. 073915-1-073915-6. DOI: 10.1063/1.3647757.
11. Busbridge S.C., Piercy A.R. Magnetostriction and magnetisation processes in TbxHo1−xFe1.9, Journal of Magnetism and Magnetic Materials, 1995, vol. 140-144, part 2, pp. 817-818. DOI: 10.1016/0304-8853(94)01450-7.
12. Politova G.A., Chzhan V.B., Tereshina I.S. et al. Spontaneous and external magnetic field-induced magnetostriction in RCo2-based multicomponent alloys, Physics of the Solid State, 2015, vol. 57, issue 12, pp. 2417-2422. DOI: 10.1134/S1063783415120288.
13. Tereshina, I.S., Nikitin, S.A., Politova, G.A. et al. Magnetostriction and magnetization of the intermetallic compounds RFe2−xCox (R = Tb, Dy, Er) with compensated magnetic anisotropy, Physics of the Solid State, 2009, vol. 51, issue 1, pp. 92-98. DOI: 10.1134/S1063783409010119.
14. Brooks M.S.S., Nordström L., Johansson B. Magnetism of RFe2 compounds, Journal of Applied Physics, 1991, vol. 69, issue 8, pp. 5683-5684. DOI: 10.1063/1.347937.
15. Tereshina I.S., Gorbunov D.I., Karpenkov A.Yu. et al. High-field magnetization study of Laves phase (Gd,Y,Sm)Fe2-H, IEEE
Magnetics Letters, 2021, vol. 13, art. no. 2504605, 5 p. DOI: 10.1109/LMAG.2021.3126282.
16. Morozov D.A., Politova G.A., Ganin M.A. et al. Terbium substitution effects in CeFe2: structure and magnetic properties, IEEE
Magnetics Letters, 2021, vol.13, art. no. 71020051, 5 p. DOI: 10.1109/LMAG.2021.3138688.
17. Tereshina I.S., Karpenkov A.Yu., Gorbunov D.I. et al. Structural and high-field magnetic properties of Laves phase RFe2-H hydrides, Journal of Applied Physics, 2021, vol. 130, issue 21, art. no. 210901, 6p. DOI: 10.1063/5.0065176.
18. lyushin A.S., Tereshina I.S., Pankratov N.Yu. et al. The phenomenon of magnetic compensation in the multi-component compounds (Tb,Y,Sm)Fe2 and their hydrides, Journal of Alloys and Compounds, 2020, vol. 847, art. no. 155976, 8 p. DOI: 10.1016/j.jallcom.2020.155976.
19. Busbridge S.C., Piercy A.R. Domain configurations in the giant magnetostrictive TbxHo1−xFe1.9 system in different easy axis regimes, Journal of Applied Physics, 1993, vol. 73, issue 10, pp. 5354-5356. DOI: 10.1063/1.353729.