Published April 2011 | Version v1
Journal article Metadata-only

Superparamagnetism induced by polar nanoregions in relaxor ferroelectric (1 - x)BiFeO3-xBaTiO3

Creators

  • 1. Tokyo Univ., Inst. for Solid State Physics, Kashiwa, Chiba (Japan)
  • 2. Tohoku Univ., Inst. for Materials Research, Sendai, Miyagi (Japan)
  • 3. Osaka Univ., Graduate School of Engineering Science, Toyonaka, Osaka (Japan)
  • 4. Osaka Univ., Graduate School of Science, Toyonaka, Osaka (Japan)

Description

A new class of superparamagnetism was found in relaxor ferroelectric 2/3BiFeO3-1/3BaTiO3. The size of the magnetic particle, estimated from the superparamagnetic magnetization curve, coincides with the size of the polar nanoregion (PNR), which governs the relaxor ferroelectric property. This suggests that the magnetic domain is identical to the PNR. The temperature variations in the sizes of the magnetic domains and PNRs estimated by our neutron diffraction measurements support this picture. Since the same domain provides both electric and magnetic properties, strong coupling between the two properties through the domain size is expected. (author)

Availability note (English)

Available from http://dx.doi.org/10.1143/JPSJ.80.043705

Additional details

Identifiers

DOI
10.1143/JPSJ.80.043705;

Publishing Information

Journal Title
Journal of the Physical Society of Japan
Journal Volume
80
Journal Issue
4
Journal Page Range
p. 043705.1-043705.4
ISSN
0031-9015

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
42095447
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
BARIUM COMPOUNDS; BISMUTH COMPOUNDS; CORRELATIONS; DIFFUSE SCATTERING; DOMAIN STRUCTURE; FERROELECTRIC MATERIALS; IRON OXIDES; LENGTH; MAGNETIZATION; NANOSTRUCTURES; NEUTRON DIFFRACTION; PERMITTIVITY; POLARIZATION; SUPERPARAMAGNETISM; TEMPERATURE DEPENDENCE; TITANIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; DIFFRACTION; DIMENSIONS; ELECTRICAL PROPERTIES; IRON COMPOUNDS; MAGNETISM; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
27 refs., 4 figs.