Magnetic phase transition and spin-phonon coupling effect of antiferromagnetic NiO flakes probed by Raman spectroscopy

被引：0

作者：

An, Nan ^{[1
]}

Wang, Liwen ^{[1
]}

Zhang, Guanghui ^{[1
]}

Qiu, Jin ^{[1
]}

Huang, Wenjuan ^{[1
]}

Chen, Xiangbai ^{[1
]}

机构：

[1] Wuhan Inst Technol, Hubei Key Lab Opt Informat & Pattern Recognit, Wuhan 430205, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2025年 / 330卷

关键词：

2D materials; NiO; Spin-phonon coupling; Magnetic phase transition; METAL MONOXIDES; BAND THEORY; SCATTERING; MAGNON; MNO;

D O I：

10.1016/j.saa.2024.125645

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Two-dimensional antiferromagnetic materials have attracted wide attention in both performance and application, which are of great significance for spin valves and next-generation magnetic random access memory devices. The spin-phonon coupling effect plays a crucial role in magnon dynamics. However, there is still a lack of research on the spin-phonon coupling effect of two-dimensional antiferromagnetic flakes. In this work, the magnetic phase transition and spin-phonon coupling effect of NiO flakes were studied by Raman spectroscopy. The magnetic phase transition temperature of the two-dimensional NiO flake is TN = 468 K. When the temperature is lower than Ne<acute accent>el temperature, the abnormal shift of phonon peaks and the temperature dependence of 2 M peak prove the magnetic order characteristics of NiO flakes. The spin-phonon coupling constants of LO, 2TO and 2LO modes are 3.5, 5.5 and 10 cm- 1, respectively, by using the abnormal hardening of the phonon scattering mode relative to the anharmonic effects. These results clearly demonstrate the significance of the twodimensional NiO flake to spintronics and are expected to play an important role in the spintronics.

引用

页数：7

共 59 条

[1] Wang Q.H., Bedoya-Pinto A., Blei M., Dismukes A.H., Hamo A., Jenkins S., Koperski M., Liu Y., Sun Q.C., Telford E.J., Kim H.H., Augustin M., Vool U., Yin J.X., Li L.H., Falin A., Dean C.R., Casanova F., Evans R.F.L., Chshiev M., Mishchenko A., Petrovic C., He R., Zhao L., Tsen A.W., Gerardot B.D., Brotons-Gisbert M., Guguchia Z., Roy X., Tongay S., Wang Z., Hasan M.Z., Wrachtrup J., Yacoby A., Fert A., Parkin S., Novoselov K.S., Dai P., Balicas L., Santos E.J.G., The Magnetic Genome of Two-Dimen
[2] Wu Y., Francisco B., Chen Z., Wang W., Zhang Y., Wan C., Han X., Chi H., Hou Y., Lodesani A., Yin G., Liu K., Cui Y.T., Wang K.L., Moodera J.S., A Van der Waals Interface Hosting Two Groups of Magnetic Skyrmions, Adv. Mater., 34, (2022)
[3] Papavasileiou A.V., Menelaou M., Sarkar K.J., Sofer Z., Polavarapu L., Mourdikoudis S., Ferromagnetic Elements in Two-Dimensional Materials: 2D Magnets and Beyond, Adv. Funct. Mater., 34, (2023)
[4] Zhang B., Lu P., Tabrizian R., Feng P.X.L., Wu Y., 2D Magnetic heterostructures: spintronics and quantum future, NPJ. Spintronics., 2, (2024)
[5] Ahn E.C., 2D materials for spintronic devices, NPJ 2D Mater, Appl., 4, (2020)
[6] Liu Y., Zeng C., Zhong J., Ding J., Wang Z.M., Liu Z., Spintronics in Two-Dimensional Materials, Nano-Micro. Lett., 12, (2020)
[7] Guo L., Hu S., Gu X., Zhang R., Wang K., Yan W., Sun X., Emerging Spintronic Materials and Functionalities, Adv. Mater., 36, (2024)
[8] Oguchi T., Terakura K., Williams A.R., Band theory of the magnetic interaction in MnO, MnS, and NiO, Phys. Rev. B, 28, pp. 6443-6452, (1983)
[9] Terakura K., Oguchi T., Williams A.R., Kubler J., Band theory of insulating transition-metal monoxides: Band-structure calculations, Phys. Rev. B, 30, pp. 4734-4747, (1984)
[10] Kumar A., Fennie C.J., Rabe K.M., Spin-lattice coupling and phonon dispersion of CdCr<sub>2</sub>O<sub>4</sub> from first principles, Phys. Rev. B, 86, (2012)

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