mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-92Research ArticleСтатьиDegenerated nuclear magnetostatic modes in ferromagnetsBorichM. A.

S. Kovalevskoy 18, Ekaterinburg 620108; Mira 19, Ekaterinburg 620002

borich@imp.uran.ruSavchenkoS. P.

S. Kovalevskoy 18, Ekaterinburg 620108

TankeyevA. P.

S. Kovalevskoy 18, Ekaterinburg 620108; Mira 19, Ekaterinburg 620002

Institute of Metal Physics of Ural Branch of RAS; Ural Federal UniversityRussian FederationInstitute of Metal Physics of Ural Branch of RASRussian Federation20182305201820118104 (8 pp.)Copyright © Borich M.A., Savchenko S.P., Tankeyev A.P., 20242024Borich M.A., Savchenko S.P., Tankeyev A.P.Borich M.A., Savchenko S.P., Tankeyev A.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/92

The detailed calculations of dependence of the frequency of oscillations on the external magnetic field and on the shape of ferromagnet sample with interacting electronic and nuclear subsystems were done. Such system possesses a discrete number of eigenfrequencies of precession of magnetization. It is shown that these magnetostatic eigenmodes can be degenerated, i.e. different modes can have the same frequency. The dependence of these degenerated modes on the sample shape is investigated. It is shown that the properties of magnetization precession and even the number of eigenmodes depend on the external magnetic field and on the shape of the sample. These effects may produce specific features on the NMR spectra of magnetic materials.

Electron-nuclear interactionmagnetostatic boundary conditionsNMRThe work was performed within the State contract of the Federal Agency of Scientific Organizations (issue “Spin”, no. AAA-A18-118020290104-2). M.A. Borich acknowledges the support of the Russian sciences foundation, project no. 16-12-10514.ReferencesTurov E., Petrov M., Nuclear Magnetic Resonance in Ferro- and Antiferromagnets (Halstead Press, New York, 1972) [in Russian: Nauka, Moscow (1969)].Turov E., Petrov M., Nuclear Magnetic Resonance in Ferro- and Antiferromagnets (Halstead Press, New York, 1972) [in Russian: Nauka, Moscow (1969)].de Gennes P., Pinkus P., Hartman-Boutron F., Winter J., Phys. Rev. 5, 1105 (1963).de Gennes P., Pinkus P., Hartman-Boutron F., Winter J., Phys. Rev. 5, 1105 (1963).Borich M., Bunkov Y., Kurkin M., Tankeyev A., JETP Letters 105, 21 (2017).Borich M., Bunkov Y., Kurkin M., Tankeyev A., JETP Letters 105, 21 (2017).Abdurakhimov L., Borich M., Bunkov Y., Gazizulin R., Konstantinov D., Kurkin M., Tankeyev A., Phys. Rev. B 97, 024425 (2018).Abdurakhimov L., Borich M., Bunkov Y., Gazizulin R., Konstantinov D., Kurkin M., Tankeyev A., Phys. Rev. B 97, 024425 (2018).Bychkov I., Kuzmin D., Buchelnikov V., Shavrov V., The Effect of Interaction of Subsystems to the Dynamic Properties of Magnetics (Moscow, Fizmatlit, 2016) [in Russian].Bychkov I., Kuzmin D., Buchelnikov V., Shavrov V., The Effect of Interaction of Subsystems to the Dynamic Properties of Magnetics (Moscow, Fizmatlit, 2016) [in Russian].Shavrov V., Shcheglov V., Magnetostatic Waves in Inhomogeneous Fields (Moscow, Fizmatlit, 2016) [in Russian].Shavrov V., Shcheglov V., Magnetostatic Waves in Inhomogeneous Fields (Moscow, Fizmatlit, 2016) [in Russian].Yalçin O., Ferromagnetic Resonance - Theory and Applications (InTech, 2013).Yalçin O., Ferromagnetic Resonance - Theory and Applications (InTech, 2013).Layadi A., AIP Advances 5, 057113 (2015).Layadi A., AIP Advances 5, 057113 (2015).Walker L., Phys. Rev. 105, 390 (1957).Walker L., Phys. Rev. 105, 390 (1957).Beeman D., Fink H., Shaltel D., Phys. Rev. 147, 454 (1966).Beeman D., Fink H., Shaltel D., Phys. Rev. 147, 454 (1966).Blocker T., Phys. Rev. 154, 446 (1967).Blocker T., Phys. Rev. 154, 446 (1967).King A., Jaccarino V., Rezende S., Phys. Rev. Lett. 37, 533 (1976).King A., Jaccarino V., Rezende S., Phys. Rev. Lett. 37, 533 (1976).Gurevich A., Magnetic Resonance in Ferrites and Antiferromagnets (Nauka, Moscow, 1973) [in Russian].Gurevich A., Magnetic Resonance in Ferrites and Antiferromagnets (Nauka, Moscow, 1973) [in Russian].Truman G. Blocker I., Phys. Rev. 154, 446 (1967).Truman G. Blocker I., Phys. Rev. 154, 446 (1967).

The authors declare that there are no conflicts of interest present.