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Manipulating the magnetic structure with electric fields in multiferroic ErMn2O5.

Y Bodenthin1, U Staub, M García-Fernández

  • 1Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.

Physical Review Letters
|February 1, 2008
PubMed
Summary

Researchers manipulated magnetic order in multiferroic ErMn2O5 using electric fields. This study shows electric fields can imprint magnetic response functions in this material.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Magnetism

Background:

  • Multiferroic materials exhibit coupling between magnetic and electric properties.
  • Erbium Manganite (ErMn2O5) is a multiferroic material with complex magnetic ordering.
  • Controlling magnetic order with electric fields is a key goal in materials science.

Purpose of the Study:

  • To investigate the effect of in situ applied electric fields on the magnetic order of multiferroic ErMn2O5.
  • To demonstrate the possibility of manipulating commensurate magnetic order using electric fields.
  • To explore the potential for electric-field-induced magnetic response functions.

Main Methods:

  • Soft x-ray magnetic diffraction measurements were performed.
  • In situ electric fields were applied to the ErMn2O5 sample during measurements.
  • Analysis focused on changes in magnetic scattering intensity at Bragg positions.

Main Results:

  • Significant manipulation and excitation of commensurate magnetic order were observed in ErMn2O5.
  • Induced magnetic scattering intensity appeared at the commensurate magnetic Bragg position.
  • The initial magnetic signal largely persisted alongside the induced signal.

Conclusions:

  • Electric field application can effectively manipulate and excite magnetic order in multiferroic ErMn2O5.
  • A magnetic response function can be imprinted in ErMn2O5 by applying an electric field.
  • This work highlights the potential of electric field control for magnetic functionalities in multiferroics.