Tailoring Magnetoelectric Coupling in BiFeO₃/La_{0.7}Sr_{0.3}MnO₃ Heterostructure through the Interface Engineering

Di Yi; Pu Yu; Yi‐Chun Chen; Hsin‐Hua Lee; Qing He; Ying‐Hao Chu; Ramamoorthy Ramesh

doi:10.1002/adma.201806335

journal article·2019-03

Tailoring Magnetoelectric Coupling in BiFeO₃/La_0.7Sr_0.3MnO₃ Heterostructure through the Interface Engineering

Di Yi, Pu Yu, Yi‐Chun Chen, Hsin‐Hua Lee, Qing He, Ying‐Hao Chu, Ramamoorthy Ramesh

Advanced Materials· Volume 31· Issue 11

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Source abstract

Abstract

Abstract Electric field control of magnetism ultimately opens up the possibility of reducing energy consumption of memory and logic devices. Electric control of magnetization and exchange bias are demonstrated in all‐oxide heterostructures of BiFeO₃ (BFO) and La_0.7Sr_0.3MnO₃ (LSMO). However, the role of the polar heterointerface on magnetoelectric (ME) coupling is not fully explored. Here, the ME coupling in BFO/LSMO heterostructures with two types of interfaces, achieved by exploiting the interface engineering at the atomic scale, is investigated. It is shown that both magnetization and exchange bias are reversibly controlled by switching the ferroelectric polarization of BFO. Intriguingly, distinctly different modulation behaviors that depend on the interfacial atomic sequence are observed. These results provide new insights into the underlying physics of ME coupling in the model system. This study highlights that designing interface at the atomic scale is of general importance for functional spintronic devices.

Source: crossref · Quality: baseline

Research context

Electronic materials

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

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

Affiliations

Department of Materials Science and Engineering and Department of Physics University of California, Berkeley Berkeley CA 94720 USA

State Key Laboratory for Low‐Dimensional Quantum Physics Department of Physics Tsinghua University Beijing 100084 P. R. China

Department of Physics National Cheng Kung University Tainan 701 Taiwan

Department of Physics Durham University Durham DH1 3LE UK

Department of Materials Science and Engineering National Chiao Tung University Hsinchu 30010 Taiwan

Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

Funding

Materials Research Science and Engineering Center, Harvard University · National Basic Research Program of China · Engineering and Physical Sciences Research Council

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