Oscillatory dynamics of the magnetic moment of a Pt/Co/Ir/Co/Pt synthetic antiferromagnet
Morgunov R. B., Yurov A. V., Yurov V. A., Talantsev A. D., Bezverhnii A. I., Koplak O. V.
Physical Review B
Vol.100, Issue14, Num.144407
Опубликовано: 2019
Тип ресурса: Статья
DOI:10.1103/PhysRevB.100.144407
Аннотация:
In this paper, we present a detailed study of the oscillating magnetic relaxation in the synthetic antiferromagnet (SAF) with two ferromagnetic Co layers of different thicknesses separated by an Ir spacer. The four stable magnetic states of the SAF are determined by the mutual alignment of magnetic moments in the layers and are controlled by both the magnetic interlayer exchange interaction and the Zeeman energy. The specific variations in the thicknesses of the layers and/or temperature allow the existence of a "triple point," which corresponds to a coincidence of the critical switching fields for two or three interstate transitions. In this case, two or even three different types of magnetization reversals occur simultaneously and competitively. A nonmonotonic dependence of the domain-wall speed vDW on magnetic field H and an oscillating time dependence of magnetic moment M in a constant magnetic field were observed in a Pt/Co/Ir/Co/Pt synthetic antiferromagnet with perpendicular ani
Ключевые слова:
Domain walls; Magnetic fields; Magnetic moments; Magnetic relaxation; Van der Waals forces; Constant magnetic fields; Dzyaloshinskii-Moriya interaction; Magnetic interlayers; Magnetic nuclei; Non-monotonic dependence; Oscillatory dynamics; Perpendicular anisotropy; Synthetic antiferromagnets; Antiferromagnetic materials
Язык текста: Английский
ISSN: 2469-9969
Morgunov R. B. Roman Borisovich 1969-
Yurov A. V.
Yurov V. A.
Talantsev A. D.
Bezverhnii A. I.
Koplak O. V.
Моргунов Р. Б. Роман Борисович 1969-
Юров А. В.
Юров В. А.
Таланцев А. Д.
Безверхнии А. И.
Коплак О. В.
Oscillatory dynamics of the magnetic moment of a Pt/Co/Ir/Co/Pt synthetic antiferromagnet
Текст визуальный непосредственный
Physical Review B
Vol.100, Issue14 Num.144407
2019
Статья
Domain walls Magnetic fields Magnetic moments Magnetic relaxation Van der Waals forces Constant magnetic fields Dzyaloshinskii-Moriya interaction Magnetic interlayers Magnetic nuclei Non-monotonic dependence Oscillatory dynamics Perpendicular anisotropy Synthetic antiferromagnets Antiferromagnetic materials
In this paper, we present a detailed study of the oscillating magnetic relaxation in the synthetic antiferromagnet (SAF) with two ferromagnetic Co layers of different thicknesses separated by an Ir spacer. The four stable magnetic states of the SAF are determined by the mutual alignment of magnetic moments in the layers and are controlled by both the magnetic interlayer exchange interaction and the Zeeman energy. The specific variations in the thicknesses of the layers and/or temperature allow the existence of a "triple point," which corresponds to a coincidence of the critical switching fields for two or three interstate transitions. In this case, two or even three different types of magnetization reversals occur simultaneously and competitively. A nonmonotonic dependence of the domain-wall speed vDW on magnetic field H and an oscillating time dependence of magnetic moment M in a constant magnetic field were observed in a Pt/Co/Ir/Co/Pt synthetic antiferromagnet with perpendicular ani