Large modulation of perpendicular magnetic anisotropy in a BiFeO3/Al2O3/Pt/Co/Pt multiferroic heterostructure via spontaneous polarizations

Liu, P. F.1; Miao, J.1; Xu, Z. D.2; Jakob, G.3; Liu, Q.1; Ren, Z. Y.1; Meng, K. K.1; Wu, Y.1; Chen, J. K.1; Xu, X. G.1; Jiang, Y.1

2018-08-06

10.1063/1.5040876

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

Magnetism control has a variety of applications in magnetic storage and spintronic devices. Instead of the control of direct magnetoelectric coupling via strain, voltage, and Dzyaloshinskii-Moriya interaction, the polarization-dependent coupling in multiferroic materials such as BiFeO3 is employed for the electric-field control of magnetizations in this work. A perpendicular magnetic anisotropy (PMA) has been realized in a BiFeO3/Al2O3/Pt/Co/Pt multiferroic structure at room temperature. Interestingly, a distinct change of coercivity field (similar to 400%) has been observed in the structure with opposite polarization directions, which can be attributed to the different oxidation degree at the Pt/Co interface. This spontaneous polarization-controlled switching not only provides us a platform to study the interfacial effect in multiferroic heterostructures but also paves the way to manipulate PMA or even spin orbit torque through oxygen vacancies. Published by AIP Publishing.

SCI ; EI

英语

NI期刊

其他

DFG[Ja821/8-1]

Physics

Physics, Applied

WOS:000441333900029

AMER INST PHYSICS

20183305689280

Bismuth compounds ; Cobalt ; Electric fields ; Heterojunctions ; Iron compounds ; Magnetic storage ; Magnetism ; Oxygen vacancies ; Platinum ; Polarization

Precious Metals:547.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Data Storage, Equipment and Techniques:722.1 ; Crystalline Solids:933.1

PHYSICS

Web of Science

1.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
3.Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

Liu, P. F.,Miao, J.,Xu, Z. D.,et al. Large modulation of perpendicular magnetic anisotropy in a BiFeO3/Al2O3/Pt/Co/Pt multiferroic heterostructure via spontaneous polarizations[J]. APPLIED PHYSICS LETTERS,2018,113(6).

Liu, P. F..,Miao, J..,Xu, Z. D..,Jakob, G..,Liu, Q..,...&Jiang, Y..(2018).Large modulation of perpendicular magnetic anisotropy in a BiFeO3/Al2O3/Pt/Co/Pt multiferroic heterostructure via spontaneous polarizations.APPLIED PHYSICS LETTERS,113(6).

Liu, P. F.,et al."Large modulation of perpendicular magnetic anisotropy in a BiFeO3/Al2O3/Pt/Co/Pt multiferroic heterostructure via spontaneous polarizations".APPLIED PHYSICS LETTERS 113.6(2018).