NMR study of magnetic structure and hyperfine interactions in the binary helimagnet FeP

Gippius, A.A.; Tkachev, A.V.; Zhurenko, S.V.; Mahajan, A.V.; Büttgen, N.; Schaedler, M.; Chernyavskii, I.O.; Morozov, I.V.; Aswartham, S.; Büchner, B.; Moskvin, A.S.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 февраля 2021 г.

Авторы: Gippius A.A., Tkachev A.V., Zhurenko S.V., Mahajan A.V., Büttgen N., Schaedler M., Chernyavskii I.O., Morozov I.V., Aswartham S., Büchner B., Moskvin A.S.
Журнал: Physical Review B
Том: 102
Номер: 21
Год издания: 2020
Издательство: American Physical Society
Местоположение издательства: United States
Первая страница: 214416
DOI: 10.1103/PhysRevB.102.214416
Аннотация: We report a detailed study of the ground-state helical magnetic structure in monophosphide FeP by means of 31P NMR spectroscopy. We show that the zero-field NMR spectrum of the polycrystalline sample provides strong evidence of an anisotropic distribution of local magnetic fields at the P site with substantially lower anharmonicity than that found at the Fe site by Mössbauer spectroscopy. From field-sweep 31P NMR spectra we conclude that a continuous spin-reorientation transition occurs in an external magnetic field range of 4–7 T, which is also confirmed by specific-heat measurements. We observe two pairs of magnetically inequivalent phosphorus positions resulting in a pronounced four-peak structure of the single crystal 31P NMR spectra characteristic of an incommensurate helimagnetic ground state. We revealed a spatial redistribution of local fields at the P sites caused by Fe spin-reorientation transition in high fields and developed an effective approach to account for it. We demonstrate that all observed 31P spectra can be treated within a model of an isotropic helix of Fe magnetic moments in the (ab)-plane with a phase shift of 36∘ and 176∘ between Fe1-Fe3 (Fe2-Fe4) and Fe1-Fe2 (Fe3-Fe4) sites, respectively, in accordance with the neutron scattering data.
Добавил в систему: Морозов Игорь Викторович

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NMR study of magnetic structure and hyperfine interactions in the binary helimagnet FePстатья

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