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).

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