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Title: Unusual multiferroicity in Cu{sub 3}Nb{sub 2}O{sub 8}

Cu{sub 3}Nb{sub 2}O{sub 8} is an anti-ferromagnetic - ferroelectric material in which the non-collinear spin alignment leads to breaking of spatial inversion symmetry. We confirm that the ferroelectricity and magnetic anomaly both occur at T{sub N1} = 25K. The emergence of ferroelectricity due to complex spin ordering is investigated by the temperature dependent low temperature measurements of magnetization, dielectric constant and electric polarization. The microscopic origin to explain magneto-electric coupling in this compound is based on a model based on ferroaxial coupling rather than inverse Dzyalonshkii-Moria interaction.
Authors:
; ;  [1]
  1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067 (India)
Publication Date:
OSTI Identifier:
22269410
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; 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; COUPLING; FERROELECTRIC MATERIALS; INTERACTIONS; MAGNETIZATION; PERMITTIVITY; POLARIZATION; SPIN; TEMPERATURE DEPENDENCE