Epitaxial growth and multiglass order in room-temperature relaxor multiferroics

POSTER

Abstract

Multiferroic materials with simultaneous ferroelectricity and magnetism provide a pathway to achieving strong magnetoelectric (ME) coupling with voltage control of magnetism, leading to compact and power efficient electric-field tunable magnetic devices. In recent years, substantial progress in finding room-temperature (RT) relaxor multiferroics, a new perspective for low-power spintronics, displaying strong ME coupling coefficients has been made [1-3]. Here, we present electric and magnetic properties of single-phase xPb(Fe,W)O3-(1-x)Pb(Zr,Ti)O3 (PFW-PZT) films epitaxially grown on (001) SrTiO3 and (220) GdScO3 substrates using pulsed laser deposition. It is demonstrated that the PFW-PZT films show good ferroelectric and piezoelectric properties by measuring macroscopic polarization and local piezoelectric as a function of electric-field. In addition, weak ferromagnetism via magnetic hysteresis loops was also observed at RT.
References
[1] D. M. Evans, et al. Nat. Commun. 4, 1534 (2013).
[2] L. F. Henrichs, et al. Adv. Funct. Mater. 26, 2111-2121 (2016).
[3] W. Kleemann. J. Phys. D: Appl. Phys. 50, 223001 (2017).

*This work was supported by the Center for Probabilistic Spin Logic for Low-Energy Boolean and Non-Boolean Computing (CAPSL), a SRC program sponsored by the NSF.

Presenters

  • Weichuan Huang

    • Department of Materials Science and Engineering, University of California at Berkeley

Authors

  • Weichuan Huang

    • Department of Materials Science and Engineering, University of California at Berkeley

  • Yen-Lin Huang

    • Materials Sciences Division, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Lab

  • Sujit Das

    • Department of Materials Science and Engineering, University of California at Berkeley
    • Department of Materials Science & Engineering, University of California, Berkeley
    • University of California, Berkeley
    • Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA.
    • Physics Department, Univesity of California, Berkeley

  • Yun-Long Tang

    • Materials Sciences Division, Lawrence Berkeley National Laboratory
    • Department of Materials Science and Engineering, University of California, Berkeley

  • R Ramesh

    • Department of Physics, University of California Berkeley, California, USA
    • Department of Materials Science and Engineering, University of California at Berkeley
    • Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA.
    • Department of Materials Science and Engineering, University of California, Berkeley
    • Department of Physics, University of California, Berkeley