Robust Ferrimagnetism and Switchable Magnetic Anisotropy in High-Entropy Ferrite Film

Jin, Fei1,2; Zhu, Yuanming3; Li, Li2; Pan, Zizhao2; Pan, Desheng2; Gu, Meng2; Li, Qian4; Chen, Lang5; Wang, Hong2

2023

10.1002/adfm.202214273

ADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile

1616-301X

1616-3028

Ferrimagnetic insulator materials are the enabling technology for the development of next-generation magnetic devices with low power consumption, high operation speed, and high miniaturization capability. To achieve a high-density memory device, a combined realization of robust saturation magnetization (M-s), controllable magnetic anisotropy, and high resistivity (rho) are highly demanded. Despite significant efforts that have been made recently, simultaneously achieving significant enhancements in these properties in a soft magnetic insulator material still remains a great challenge, severely limiting their practical application. Herein, a high-entropy strategy in an ultra-thin spinel ferrite (CrMnFeCoNi)(3)O-4 film is reported that exhibits concurrently a superior saturation magnetization (M-S = 1198 emu cm(-3)), low coercivity (H-C = 90 Oe), and excellent resistivity (rho = 1233 omega cm), as well as switchable magnetic anisotropy. The comprehensive lattice probing and microstructure analysis studies reveal that such desirable ferromagnetic properties originate from the high-quality structurally ordered but compositionally disordered single-crystal epitaxial structure. The switchable magnetic anisotropy demonstrated in the high-entropy ferrite film can be attributed to the new antiferromagnetic rock-salt phase. This work unveils the critical benefits of the high-entropy strategy for magnetic oxide thin films, which opens up new opportunities for the development of high-performance magnetic materials.

ferrimagnetic insulators high saturation magnetization high-entropy oxide spinel structures switchable magnetic anisotropy

SCI

English

NI Journal Papers

Corresponding

Shenzhen Science and Technology Program["KQTD20180411143514543","JCYJ20220818100613029"] ; National Natural Science Foundation of China["51972160","12004156"] ; Science and Technology Research Items of Shenzhen[JCYJ20180504165650580]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000920569800001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Xi An Jiao Tong Univ, Sch Elect & Informat Engn, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Engn Res Ctr Novel Elect Informat Mat & D, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Dongguan Univ Technol, Res Inst Interdisciplinary Sci, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China
4.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China
5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Jin, Fei,Zhu, Yuanming,Li, Li,et al. Robust Ferrimagnetism and Switchable Magnetic Anisotropy in High-Entropy Ferrite Film[J]. ADVANCED FUNCTIONAL MATERIALS,2023.

Jin, Fei.,Zhu, Yuanming.,Li, Li.,Pan, Zizhao.,Pan, Desheng.,...&Wang, Hong.(2023).Robust Ferrimagnetism and Switchable Magnetic Anisotropy in High-Entropy Ferrite Film.ADVANCED FUNCTIONAL MATERIALS.

Jin, Fei,et al."Robust Ferrimagnetism and Switchable Magnetic Anisotropy in High-Entropy Ferrite Film".ADVANCED FUNCTIONAL MATERIALS (2023).