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