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Title: Investigation on the pyroelectric property of polycrystalline GdMnO{sub 3}

Pyroelectric property of orthorhomic GdMnO{sub 3} polycrystalline samples was investigated. Two pyrocurrent peaks were observed with the sharp one near 20 K and the broad one at around 120 K. The dependences of these two peaks on magnetic field, heating rate, and poling voltage were explored systematically. The sharp peak is related to the ferroelectric transition, while the behavior of the broad one corresponds to dipole reorientation. Some key pyroelectric features are proposed to separate the spin-induced ferroelectricity from other effects. This work is helpful for understanding the pyroelectric property of multiferroic materials.
Authors:
 [1] ;  [2] ;  [1] ;  [2] ; ; ; ; ; ; ;  [1] ;  [3]
  1. Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084 (China)
  2. (China)
  3. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004 (China)
Publication Date:
OSTI Identifier:
22283176
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIPOLES; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; FERROELECTRIC MATERIALS; GADOLINIUM COMPOUNDS; HEATING RATE; MAGNETIC FIELDS; MANGANATES; ORTHORHOMBIC LATTICES; POLYCRYSTALS; PYROELECTRIC EFFECT; SPIN; TEMPERATURE DEPENDENCE