Journal of Radio Electronics. eISSN 1684-1719. 2026. ¹2
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2026.2.6
PHASE DIAGRAM OF TWO-SUBLATTICE FERROMAGNETIC
WITH COMPENSATION POINT IN PRESENCE OF ANISOTROPY,
DEMAGNETIZATION AND NONUNIFORM EXCHANGE
D.A. Suslov, V.I. Shcheglov
Institute of Radio Engineering and Electronics RAS,
125009, Moscow, st. Mokhovaya, 11, b.7
The paper was received 23 December, 2025.
Abstract. The phase diagram of two-sublattice ferromagnetic with compensation point in presence of anisotropy, demagnetization and nonuniform exchange in geometry of normal magnetized thin plate is investigated. The method of diagram constructions by dynamical establishment method is proposed. It is found the motion equations for both magnetizations sublattices by variation of task parameters. The character of diagram changing through whole temperature range from zero to maximum Curie temperature both sublattices is investigated. It is shown that the increasing of exchange interaction and taking into attention of demagnetization brings to rising on field both diagram branches with its corresponding widening. In this case on the lower branch of diagram the narrow depression is formed localized near compensation temperature. It is found that by increasing of anisotropy constant by “light axis” type the upper branch of diagram is lowered and lower is raised so as diagram in whole is narrowed. In this case the narrow depression on lower branch in compensation region is absent. It is shown that the narrowing of diagram by sufficient anisotropy constant value leads to junction of upper and lower branches of diagram everywhere excepting the compensation temperature. It is shown that in this case the diagram acquires the appearance of exclusive region which is limited in the field and temperature. It is discussed the conformity of limited region appearance to experimental observed results. It is proposed some recommendations for further development of investigations.
Keywords: phase diagram, two-sublattice ferromagnetic, dynamical establishment method.
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.
Corresponding author: Shcheglov Vladimir Ignatyevich, vshcheg@cplire.ru
References
1. Lax B., Button K.J. Microwave ferrites and ferrimagnetics. New York, San Francisco, Toronto, London: McGraw-Hill Book Company. 1962.
2. Gurevich A.G. Magnetic resonance in ferrites and antiferromagnetics. M.: Nauka. 1973.
3. Gurevich A., Melkov G. Magnetic oscillations and waves. M.: Nauka-Fizmatlit. 1994.
4. Kurushin E.P., Nefedov E.I. Application of thin mono-crystal ferrite films in microwave designs. // Microelectronics. 1977. V.77. ¹6. P.549-561.
5. Glass H.L. Ferrite films for microwave and millimeter wave devices. // Proc. IEEE. 1988. V.76. ¹2. P.151-158.
6. Shavrov V.G., Shcheglov V.I. Magnetostatic waves in nonuniform fields. M.: Fizmatlit. 2016.
7. Shavrov V.G., Shcheglov V.I. Magnetostatic and electromagnetic waves in complex structures. M.: Fizmatlit. 2017.
8. Shavrov V.G., Shcheglov V.I. Ferromagnetic resonance in conditions of orientation transition. M.: Fizmatlit. 2018.
9. Shavrov V.G., Shcheglov V.I. Dynamics of magnetization in conditions of its orientation changing. M.: Fizmatlit. 2019.
10. Shavrov V.G., Shcheglov V.I. Spin waves in media with exchange and dissipation. M.: Fizmatlit. 2021.
11. Romanova I. Magnetoresistive memory MRAM of company Everspin Technologies. // Electronics STB. 2014. ¹8.
12. Lisovsky F.V. Physics of bubble domains. M.: Sov. Radio. 1979.
13. Malozemoff A.P., Slonczewski J.C. Magnetic domain walls in bubble materials. Academic Press. New York London Toronto Sydney San Francisco. 1979.
14. Kikuchi E. The ultra-sound converters. M.: Mir. 1972.
15. Golyamina I.P. // Magnetostriction transducer. // In book: Ultra-sound. Small encyclopaedia. Gd. on chief: I.P.Golyamina. M.: Soviet encyclopaedia. 1979. P.196-200.
16. Golyamina I.P. // Magnetostriction radiators from ferrites. // In book: Physics and engineering of powerful ultra-sound. Vol.1. Source of powerful ultra-sound. M.: Nauka. 1967.
17. Kirilyuk A., Kimel A.V., Rasing T. Ultrafast optical manipulation of magnetic order. // Rev. Mod. Phys. 2010. V.82. ¹3. P.2731.
18. Bigot J.V., Vomir M. Ultrafast magnetization dynamics of nanostructures. // Ann. Phys. (Berlin). 2013. V.525. ¹1-2. P.2.
19. 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. ¹1. P.18-47.
20. Belov K.P., Zvezdin A.K., Kadontseva A.M., Levitin R.Z. Transitions of spin re-orientation in rare-earth magnetics. // Sov. Phys. Usp. 1976. V119. ¹3. P.447-486.
21. Belov K.P., Zvezdin A.K., Kadontseva A.M., Levitin R.Z. Orientational transitions in rare-earth magnetics. M.: Nauka. 1979.
22. Clark A.E., Callen E. Neel ferromagnets in large magnetic fields. // J. Appl. Phys. 1968. V.39. ¹13. P.5972-5082.
23. Goranskiy B.P., Zvezdin A.K. About turn development of ferrimagnetic sublattices in magnetic field. // JETP Letters. 1969. V.10. P.196-200.
24. Suslov D.A., Shavrov V.G., Shcheglov V.I. The calculation algorithm of sublattice magnetizations in two-lattice ferromagnet with compensation point. Part 1. Phase diagram. // Zhurnal Radioelectroniki – Journal of Radio Electronics. 2024. ¹5. https://doi.org/10.30898/1684-1719.2024.5.2
25. Suslov D.A., Shavrov V.G., Shcheglov V.I. The calculation algorithm of sublattice magnetizations in two-lattice ferromagnet with compensation point. Part 2. Power index approximation. // Zhurnal Radioelectroniki – Journal of Radio Electronics. 2024. ¹5. https://doi.org/10.30898/1684-1719.2024.5.3
26. Suslov D.A., Shavrov V.G., Shcheglov V.I. Phase diagram of two-sublattice ferrimagnetic with compensation point in presence of uniaxial anisotropy // Zhurnal Radioelectroniki – Journal of Radio Electronics. 2025. ¹2. https://doi.org/10.30898/1684-1719.2025.2.1
27. Koledov V.V., Suslov D.A., Shcheglov V.I. The anisotropy influence to phase diagram of two-sublattice ferromagnetic with compensation point. // Zhurnal Radioelectroniki – Journal of Radio Electronics. 2025. ¹7. https://doi.org/10.30898/1684-1719.2025.7.4
28. Suslov D.A., Shcheglov V.I. Application of dynamical establishment method for phase diagram construction of two-sublattice ferromagnetic with compensation point. // Zhurnal Radioelectroniki – Journal of Radio Electronics. 2025. ¹9. https://doi.org/10.30898/1684-1719.2025.9.11
29. Antonov L.I., Ternovsky V.V., Khapayev M.M.Calculation of periodic domain structures in ferromagnetic materials. // Physics of Metals and Mteallography. 1989. V.67. ¹1. P.49-53.
30. Antonov L.I., Lukasheva E.V., Mironova G.A., Skachkov D.G. Dynamic setting of an equilibrium period in the magnetization structure of ferromagnetic films. // Physics of Metals and Metallography. 2000. V.90. ¹3. P.213-219.
31. Antonov L.I., Zhukarev A.S., Polyakov P.A., Skachkov D.G. The vector magnetization field in uniaxial ferromagnetic film. // Journal of Technical Physics. 2004. V.74. ¹3. P.83-84.
32. Suslov D.A., Shavrov V.G., Vetoshko P.M., Shcheglov V.I., Poyimanov V.D., Morozov E.V., Kuzneysov D.D, Koledov V.V. Thermo-dynamical model for description of phase diagram transformation peculiarity in ferrite-garnets (Bi Y Lu)3(Fe Ga)5O12 è (Bi Gd)3(Fe Ga)5O12 in external magnetic field. // Zhurnal Radioelectroniki – Journal of Radio Electronics. 2024. ¹6. https://doi.org/10.30898/1684-1719.2024.11.5
33. Suslov D.A., Morozov E.V., Karpukhin D.A., Koledov V.V., Shavrov V.G., Mashirov A.V., Vetoshko P.M., Kolesov K.A., Shcheglov V.I., Von-Gratovsky S.V., Vaasambuu. Phase transformations in magnetic field in ferrite-garnets – perspective microwave magneto-calorical materials. // Transactions of conference “Day of caloric in Bashkortostan functiom materials ant its applications”. Bashkortostan. Chelyabinsk. ChelSU. 2024. p.141-143.
34. Suslov D.A., Vetoshko P.M., Mashirov A.V., Taskaev S.V., Polulyakh S.N., Berzhansky V.N., Shavrov V.G. Non-collinear phase in rare-earth iron garnet films near compensation temperature. // Crystals. 2023. V.13. ¹9. P.1297(11).
35. Suslov D.A., Koledov V.V., Poymanov V.D., Vetoshko P.M., Shcheglov V.I., Kolesov R.F., Mashirov A.V., Fedorov A.S., Logunov M.V., Shavrov V.G. Phase diagrams of rare-earth iron garnets with compensation point at the phase transitions interactions. // Chelyabinsk Physical and Mathematical Journal. 2025. V.10. ¹2. P.354-365. https://doi.org/10.47475/2500-0101-2025-10-2-354-365
For citation:
Suslov D.A., Shcheglov V.I. Phase diagram of two-sublattice ferromagnetic with compensation point in presence of anisotropy, demagnetization and nonuniform exchange // Journal of Radio Electronics. – 2026. – ¹. 2. https://doi.org/10.30898/1684-1719.2026.2.6 (In Russian).