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Ferroelectrics Volume 481, 2015 - Issue 1
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Articles

Ferroelectricity in a New Luminescent Organic-Inorganic Hybrid: [CH3(C6H5)3P]2MnBr4

Ahmad K. TammamPhysics Department, Faculty of Science, University of Cairo, Giza, Egypt
,
Thanaa Sh. El-DeanPhysics Department, Faculty of Science, University of Cairo, Giza, Egypt
&
Mohga F. MostafaPhysics Department, Faculty of Science, University of Cairo, Giza, EgyptCorrespondence[email protected]
Pages 34-40 | Accepted 23 Jul 2014, Published online: 01 Sep 2015
 
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Abstract

The material was synthesized, investigated by DSC, X-ray powder diffraction and impedance measurement. Ferroelectric activity was found below 310 K. The material crystallizes in a monoclinic system, space group P21 at T= 298 K, a =9.623 Å, b =12.565 Å, c =16.45 Å and β = 105.6°. Spontaneous polarization was estimated by Sawyer-Tower Bridge and measured by pyrocharge shows ferroelectricity. Permittivity shows a sharp frequency dependent peak with Curie temperature at 310 K.

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