Volume 86, Number 5, June 2009
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||08 June 2009|
Field-dependent competing magnetic ordering in multiferroic Ni3V2O8
School of Physical Sciences, Jawaharlal Nehru University - New Delhi 110067, India
2 UGC-DAE Consortium for Scientific Research, University Campus - Khandwa Road, Indore 452017, India
3 Tata Institute of Fundamental Research - Bombay 400 005, India
Corresponding author: firstname.lastname@example.org
Accepted: 7 May 2009
The geometrically frustrated magnet Ni3V2O8 undergoes a series of competing magnetic ordering at low temperatures. Most importantly, one of the incommensurate phases has been reported to develop a ferroelectric correlation caused by spin frustration. Here we report an extensive thermodynamic, dielectric and magnetic study on clean polycrystalline samples of this novel multiferroic compound. Our low-temperature specific heat data at high fields up to 14 Tesla clearly identify the development of a new magnetic-field–induced phase transition below 2 K that shows signatures of simultaneous electric ordering. We also report temperature- and field-dependent dielectric constant that enables us to quantitatively estimate the strength of magneto-electric coupling in this improper ferroelectric material.
PACS: 75.80.+q – Magnetomechanical and magnetoelectric effects, magnetostriction / 75.10.-b – General theory and models of magnetic ordering
© EPLA, 2009
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