Oxygen controlled perpendicular magnetic anisotropy in LaCoO3-delta/La0.7Sr0.3MnO3/LaCoO3-delta heterostructures

Liu, Qi1; Li, Xiaowen1; Zhu, Yuanmin2; Jin, Cai1; Han, Wenqiao1; Hu, Sixia3; Ji, Yanjiang1; Xu, Zedong1,4; Hu, Songbai1; Ye, Mao1; Chen, Lang1,3

2022-06-13

10.1063/5.0090449

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

Large data storage at reduced dimension is of a great deal of interest in spintronic devices in which magnetic oxide films lead for realizing the modulation of perpendicular magnetic anisotropy (PMA). Herein, we report the modulation of PMA in oxide heterostructures composed of one manganite layer sandwiched between two cobaltite layers, i.e., LaCoO3-delta/La0.7Sr0.3MnO3/LaCoO3-delta via oxygen vacancies. The PMA is originated by the orbital reconstruction and ferromagnetic exchange interaction at the interface between the CoO6 and MnO6 octahedra layers. The modulation ratio up to a significant value ~200% of PMA can be realized through the phase transition of LaCoO3-delta layers between perovskite and brownmillerite via deprivation or replenishment of oxygen sites. The antiferromagnetic superexchange interaction at the interface between the oxygen-deficient CoO4 tetrahedra layer and the adjacent MnO6 octahedral layer with lattice distortion may suppress the magnetization and PMA. This work ensures promising outcomes in situ modulation of PMA in oxide films such as ferroelectric polarization or ionic liquid gating via the transport of oxygen vacancies. Published under an exclusive license by AIP Publishing.

SCI ; EI

英语

NI论文

第一 ; 通讯

NSFC (National Natural Science Foundation of China)[51972160,11804145] ; Science and Technology Research Items of Shenzhen["JCYJ20180504165650580","JCYJ20190809142603695"] ; High-level Special Funding["G02206303","G02206403"] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515110519]

Physics

Physics, Applied

WOS:000810506200003

AIP Publishing

20222512249453

Digital storage ; Ionic liquids ; Magnetic anisotropy ; Magnetic storage ; Magnetism ; Manganites ; Modulation ; Oxide films ; Oxygen vacancies ; Perovskite

Minerals:482.2 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Data Storage, Equipment and Techniques:722.1 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystalline Solids:933.1

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China
3.Southern Univ Sci & Technol, Mat Characterizat & Preparat Ctr, Shenzhen 518055, Peoples R China
4.Tiangong Univ, Sch Elect & Informat Engn, Tianjin 300387, Peoples R China

Liu, Qi,Li, Xiaowen,Zhu, Yuanmin,et al. Oxygen controlled perpendicular magnetic anisotropy in LaCoO3-delta/La0.7Sr0.3MnO3/LaCoO3-delta heterostructures[J]. APPLIED PHYSICS LETTERS,2022,120(24).

Liu, Qi.,Li, Xiaowen.,Zhu, Yuanmin.,Jin, Cai.,Han, Wenqiao.,...&Chen, Lang.(2022).Oxygen controlled perpendicular magnetic anisotropy in LaCoO3-delta/La0.7Sr0.3MnO3/LaCoO3-delta heterostructures.APPLIED PHYSICS LETTERS,120(24).

Liu, Qi,et al."Oxygen controlled perpendicular magnetic anisotropy in LaCoO3-delta/La0.7Sr0.3MnO3/LaCoO3-delta heterostructures".APPLIED PHYSICS LETTERS 120.24(2022).