Heterogeneously integrated freestanding oxide membrane with multiferroicity

ORAL

Abstract

Transition metal oxides exhibit diverse electrical and magnetic characteristics, which are influenced by their order parameters. Ferroic orderings offer a wide range of important scientific phenomena and practical uses. To create multiferroic oxides successfully, a promising approach involves combining ferroelectric (FE) and ferromagnetic (FM) materials. The development of freestanding, heterogeneous membranes containing these multiferroic oxides is highly desirable.

In this study, we employed pulsed laser epitaxy to create freestanding bilayer membranes made of BaTiO3 and La0.7Sr0.3MnO3 [1]. These membranes display ferroelectric and ferromagnetic properties at room temperature, along with a measurable magnetoelectric (ME) coupling coefficient. Our research highlights the importance of achieving freestanding heterostructures in determining their structural and emerging qualities. When not clamped by the substrate, the magnetic orientation axis undergoes reorientation, resulting in perpendicular magnetic anisotropy due to changes in the orbital occupancy of the magnetic layer. These findings open the door to integrating these flexible membranes into electronic applications.

*This workwas supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1C1C1005168)

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Publication: [1] K. T. Kang et al., Adv. Sci. 10, 15 (2023).

Presenters

  • Kyeong Tae J Kang

    • Kyungpook National University
    • Ulsan National Institute of Science and Technology
    • Los Alamos National Laboratory
    • Pusan National University

Authors

  • Kyeong Tae J Kang

    • Kyungpook National University
    • Ulsan National Institute of Science and Technology
    • Los Alamos National Laboratory
    • Pusan National University

  • Aiping Chen

    • Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Los Alamos National Laboratory
    • lanl

  • Kyeong Tae J Kang

    • Kyungpook National University
    • Ulsan National Institute of Science and Technology
    • Los Alamos National Laboratory
    • Pusan National University

  • Kyeong Tae J Kang

    • Kyungpook National University
    • Ulsan National Institute of Science and Technology
    • Los Alamos National Laboratory
    • Pusan National University

  • Yogesh Sharma

    • Los Alamos National Laboratory

  • Binod Paudel

    • Los Alamos National Laboratory

  • Pinku Roy

    • Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    • Los Alamos National Laboratory
    • lanl

  • Liam Collins

    • Oak Ridge National Laboratory

  • Kyeong Tae J Kang

    • Kyungpook National University
    • Ulsan National Institute of Science and Technology
    • Los Alamos National Laboratory
    • Pusan National University

  • Kyeong Tae J Kang

    • Kyungpook National University
    • Ulsan National Institute of Science and Technology
    • Los Alamos National Laboratory
    • Pusan National University

  • Yoon Seok Oh

    • Ulsan Natl Inst of Sci & Tech (UNIST)

  • Jinkyoung Yoo

    • Los Alamos National Laboratory

  • Jaekwang Lee

    • Pusan Natl Univ

  • Han Htoon

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Quanxi Jia

    • State Univ of NY - Buffalo