Published May 7, 2015 | Version v1
Journal article Metadata-only

Enhanced magnetism-generated ferroelectricity in highly frustrated Fe-doped Ho2Ti2O7

Creators

  • 1. Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093 (China)
  • 2. Department of Physics, Southeast University, Nanjing 211189 (China)
  • 3. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

Description

We present careful experiments on the ferroelectric (FE), dielectric, and magnetic behaviors of Ho2−xFexTi2O7 with Fe3+ substitution for Ho3+. A remarkable enhancement of polarization up to 235 μC/m2 is obtained at a low level x = 0.08, accompanied with the FE transition up to ∼80 K. The ac susceptibility under magnetic fields shows an expected saturated maximum in the real part χ′, along with an unexpected frequency-dependent peak in the imaginary part χ″, indicating unusual slow spin relaxation. The coupled correlated spin domains through dipolar interaction are argued to give rise to nonzero electric-dipole via Dzyaloshinskii-Moriya interaction

Additional details

Identifiers

DOI
10.1063/1.4918334;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
117
Journal Issue
17
Journal Page Range
vp.
ISSN
0021-8979
CODEN
JAPIAU

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46115976
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CONCENTRATION RATIO; DOPED MATERIALS; ELECTRIC DIPOLES; FERROELECTRIC MATERIALS; FREQUENCY DEPENDENCE; HOLMIUM COMPOUNDS; HOLMIUM IONS; IRON COMPOUNDS; IRON IONS; MAGNETIC FIELDS; MAGNETISM; PHASE TRANSFORMATIONS; POLARIZATION; RELAXATION; SPIN; TEMPERATURE DEPENDENCE; TITANATES
Descriptors DEC
ANGULAR MOMENTUM; CHARGED PARTICLES; DIELECTRIC MATERIALS; DIMENSIONLESS NUMBERS; DIPOLES; IONS; MATERIALS; MULTIPOLES; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; RARE EARTH COMPOUNDS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
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