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Journal of Applied Physics / Volume 108 / Issue 4 / SPECIAL TOPIC: INVITED PAPERS FROM THE INTERNATIONAL SYMPOSIUM ON PIEZORESPONSE FORCE MICROSCOPY AND NANOSCALE PHENOMENA IN POLAR MATERIALS, AVEIRO, PORTUGAL, 2009

J. Appl. Phys. 108, 042012 (2010); http://dx.doi.org/10.1063/1.3474967 (5 pages)

Local probing of magnetoelectric coupling in multiferroic composites of BaFe12O19–BaTiO3

D. V. Karpinsky1, R. C. Pullar1, Y. K. Fetisov2, K. E. Kamentsev2, and A. L. Kholkin1

1Department of Ceramics and Glass Engineering & CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
2Moscow State Institute of Radio Engineering, Electronics, and Automation (Technical University), 117454 Moscow, Russia

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(Received 20 October 2009; accepted 2 February 2010; published online 31 August 2010)

The BaFe12O19–BaTiO3 composite ferroelectric/ferromagnetic ceramics were prepared by conventional solid-state sintering technique. The magnetic properties are consistent with the ratio of the magnetic phase present but ferroelectric properties are degraded due to a sufficiently high degree of conductivity in the ceramics. Magnetoelectric coupling was observed at a local level by means of the scanning probe microscopy (SPM). Piezoresponse and magnetic force modes of SPM were both utilized to assess strain-mediated magnetoelectric coupling between neighboring grains. The observed variation in the magnetic signal after the electrical poling with SPM was attested to the changes in the magnetic interactions and magnetic anisotropy leading to broadening of the magnetic domain wall.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL DETAILS
  3. RESULTS AND DISCUSSION
  4. CONCLUSIONS

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KEYWORDS and PACS

Keywords

barium compounds, composite materials, electrical conductivity, ferroelectric ceramics, ferromagnetic materials, magnetic anisotropy, magnetic domain walls, magnetic forces, magnetoelectric effects, multiferroics, scanning probe microscopy, sintering

PACS

  • 75.85.+t

    Magnetoelectric effects, multiferroics

  • 77.84.Lf

    Composite materials

  • 77.80.-e

    Ferroelectricity and antiferroelectricity

  • 75.60.Ch

    Domain walls and domain structure

  • 81.20.-n

    Methods of materials synthesis and materials processing

  • 75.30.Gw

    Magnetic anisotropy

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3474967

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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