DataVXACS Applied Electronic MaterialsPaper
journal article·2023-10-24

Orientation-Driven Strong Perpendicular Magnetic Anisotropy in La0.67Sr0.33MnO3–SrIrO3 Heterostructures

Zengxing Lu, Lijie Wen, Jiatai Feng, Xuan Zheng, Bin Lao, Sheng Li, Kenan Zhao, Liguang Gong, Huali Yang, Guoxin Chen, Anna Zakharova, Cinthia Piamonteze, Milan Radovic, Xianfeng Hao, Run-Wei Li, Zhiming Wang

ACS Applied Electronic Materials· Volume 5· Issue 10
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Source abstract

Abstract

Strong perpendicular magnetic anisotropy (PMA) is crucial for high-performance spintronic devices. However, in transition-metal oxides, it is challenging to achieve an excellent PMA property (anisotropy energy, K U > 10 6 erg/cm 3 ), limiting their application potential. Here, we report a pathway to achieve obvious PMA in 3d–5d [ n La 0.67 Sr 0.33 MnO 3,nSrIrO 3 ] m ([ n LSMO, nSIO] m ) heterostructures via the cooperation of interfacial engineering and crystal orientation. By depositing multilayers with a (110) orientation, significant PMA is observed despite the fact that the bare LSMO and (001)-oriented heterostructures show in-plane magnetic anisotropy. First-principles calculations suggest that in the (110)-oriented heterosystems, SIO exhibits a large and perpendicular single-ion anisotropy attributed to its strong spin–orbit coupling effect, which leads to the PMA through strong orbital hybridization between Mn and Ir ions at the LSMO/SIO interface. By varying thicknesses ( n ) of LSMO and SIO, the K U can be optimized to 4 × 10 6 erg/cm 3 . Moreover, the conductive behavior can also be drastically altered between insulation and metallicity with the n change, implying the potential for simultaneously obtaining ferromagnetic metals and insulators with sizable PMA in one oxide heterosystem. These findings highlight the importance of interfacial engineering and crystalline orientation in tuning PMA in oxides and provide a feasible route for developing high-performance oxide-based spintronic devices.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China

Institute of Advanced Science Facilities, Shenzhen 518107, China

Testing Center, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

SwissFEL, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Funding

Key Research Program of Frontier Science, Chinese Academy of Sciences · National Key Research and Development Program of China · K. C. Wong Education Foundation · National Natural Science Foundation of China · Beijing National Laboratory for Condensed Matter Physics · Public Welfare Technical Applied Research Project of Zhejiang Province · Swiss National Science Foundation · Natural Science Foundation of Zhejiang Province of China · Ningbo Key Scientific and Technological Project · Ningbo Natural Science Foundation

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