14 October 2015

Colossal magnetoelectric coupling probed to 90 teslas

Ni3TeO6 provides a new approach to coupling magnetism to ferroelectricity with a record large response. We measured this material's magnetic and electric properties across an extended range of temperature and magnetic field and compared with theoretical calculations to extract a model that describes the underlying reason for a large magnetoelectric coupling. High magnetic fields were key to establishing the magnetic Hamiltonian. This work is motivating the discovery of further 3d-4d oxide materials with large magnetoelectric couplings.

What did scientists discover?

Materials containing 3d and 4d transition-metal magnetic ions are being heavily investigated for new magnetic and electronic functionalities. We discovered and explained an extremely large coupling between the magnetism and ferroelectric properties in Ni3TeO6.

Why is this important?

Some of the most sensitive low-power magnetic sensors make use of magneto-electric coupling in insulators. Indeed, coupling between magnetism and electricity spans a wide range of practical applications. If this coupling can be achieved in an electrical insulator, applications requiring lower power and less waste heat, such as novel devices for data storage, can be envisioned.

Who did the research?

J. W. Kim1,2, S. Artyukhin1, E. D. Mun2,3, M. Jaime2, N. Harrison2, A. Hansen2, J. J. Yang1, Y. S. Oh1, D, Vanderbilt1, V. S. Zapf2, S. W. Cheong1

1Rutgers; 2NHMFL-LANL; 3Simon Frazer University

Why did they need the MagLab?

THE TOOLS THEY USED

This research was conducted in the 65 T and 100 T magnets at the MagLab's Pulsed Field Facility located at Los Alamos.

The ability to track the properties of the material across extended ranges of temperature and magnetic fields yields robust information to develop a theoretical model. Measurements to 92 teslas uncovered a new phase transition and allowed us to significantly constrain our microscopic model that explains this material’s unusual behaviors.

Details for scientists

Funding

This research was funded by the following grants: G.S. Boebinger (NSF DMR-1157490); LANL authors (BES FWP LANL F100); Rutgers authors (NSF DMREF 12-33349)


For more information, contact Vivien Zapf.

Details

  • Research Area: Magnetism and Magnetic Materials
  • Research Initiatives: Materials
  • Facility / Program: Pulsed Field
  • Year: 2015
Last modified on 6 March 2017