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Magnetic and electric characterization of multiferroic organometallic compound (CH3)(2)NH2]Mn0.5Ni0.5(HCOO)(3)

Chakraborty, Tirthankar and Elizabeth, Suja (2017) Magnetic and electric characterization of multiferroic organometallic compound (CH3)(2)NH2]Mn0.5Ni0.5(HCOO)(3). In: SOLID STATE COMMUNICATIONS, 261 . pp. 1-5.

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Official URL: https://doi.org/10.1016/j.ssc.2017.05.019


(CH3)(2)NH2]Mn0.5Ni0.5(HCOO)(3) is prepared via solvothermal method. Phase purity and crystal structures are determined at room temperature using powder X-ray diffraction. Temperature variation of magnetization and isothermal field variation of magnetization indicate antiferromagnetic ordering with weak ferromagnetism. This is possibly induced by spin canting. Thermally activated relaxation is observed which is attributed to ordering of dimethylamine cation. This is associated with first order improper antiferroelectric transition. Temperature dependence of polarization and its spontaneity has been confirmed from pyroelectric current measurements. Effect of electric ordering is clearly reflected in impedance spectroscopy data. Two regions are distinct above and below electric ordering temperature which are demarcated by the magnitude of resistance and capacitance of equivalent circuit model and activation energy. Co-existence of magnetic and electric ordering at low temperature is a signature of multiferroic phase.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 12 Aug 2017 04:25
Last Modified: 12 Aug 2017 04:25
URI: http://eprints.iisc.ac.in/id/eprint/57600

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