logo icmab ochoa 02 01 logo icmab ochoa 02 01
  • NEWS

Electric control of magnetism at the Fe/BaTiO3 interface

switching

 

G. Radaelli, D. Petti, E. Plekhanov, I. Fina, P. Torelli, B.R. Salles, M. Cantoni, C. Rinaldi, D. Gutiérrez, G. Panaccione, M. Varela, S. Picozzi, J. Fontcuberta & R. Bertacco;

Nature Comm. 5, 3404 (2014), 

DOI: 10.1038/ncomms4404

 

Switching on/off magnetism by electric fields

Nowadays a magnetic field is used to write information in magnetic memories. However, a serious drawback is the energy consumption for the writing process. Using an electric field in open circuit for writing would drastically reduce the energy demand. However direct action of electric fields on magnetic order is very rare. Instead, interfacial magnetoelectric coupling (MEC) could be a viable path to achieve electrical writing of magnetic information in spintronic devices.

Now, researchers of the Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), in collaboration with researchers from Oak Ridge (USA), Milano and Trieste (Italy) and Madrid (Spain) have demonstrated that it is possible to switch ON and OFF the magnetism of a sample, by using a simple battery. The work has just appeared in Nature Communications (DOI: 10.1038/ncomms4404; 4th March 2014).

We have shown that at the interface between a ferromagnetic metal, Fe, and a ferroelectric oxide (BaTiO3) an ultrathin layer of FeOx is formed whose magnetization can be reversibly switched on/off, at room temperature, by reversing the polarizing the ferroelectric layer up or down.

This finding discloses the microscopic nature of strong magnetoelectric coupling observed at interfaces between suitable ferromagnetic and ferroelectric materials and shows that the voltage control of magnetic memories could be at horizon for lower energy consumption memory devices.

 

See more posts on ICMAB related to: Materials for information science and electronics
See more posts on ICMAB related to: Ignasi Fina , Diego Gutiérrez , Josep Fontcuberta

Related Topics: Materials for information science and electronics

Also on ICMAB...

  • Imaging how magnetism goes surfing

    01 September 2017 521 hit(s)

    Using ALBA’s synchrotron light, researchers have been able to visualise deformation (sound) waves in crystals and measured the effect on nanomagnetic elements. The study, published today in Nature Communications, uses the accelerators’ time structure to record time resolved images with a resolution of 80 picoseconds. The methodology offers a new approach for analysing dynamic strains in other research fields: nanoparticles, chemical reactions, crystallography, etc.
  • Ignasi Fina, Young Researchers First Prize at the Biennial Meeting of the RSEF

    20 July 2017 652 hit(s)

    Ignasi Fina, Postoctoral Researcher at the MULFOX group at ICMAB, has been awarded with the First Prize of the Young Researchers Award - Postdoctoral Researchers category, for his contribution to the XXXXI Biennial Meeting of the RSEF (Real Sociedad Española de Física) 2017 and for his excellent research career. 

Search