Article ID Journal Published Year Pages File Type
1651363 Materials Letters 2008 4 Pages PDF
Abstract

Phase transitions were studied for the new synthesized ferroic (NH2(C2H5)2CuCl4 (DEA–CuCl4) and (NH2(C2H5)4CoCl2Br2 (TEA–CoCl2Br2) nanocrystallites (NC) incorporated into polymer matrices. Comparison with the bulk crystals is performed. A giant temperature shift (from 305.1°C to 360.3°C) of onset temperature for TEA–CoCl2Br2 nanoparticles after their incorporation into the PMMA matrix was found and is substantially larger compared to the DEA–CuCl4. The DSC analysis shows that the temperature of phase transition is crucially dependent on the thermocycling and temperature rate. The principal role of the nano-sized effects is shown.

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Physical Sciences and Engineering Materials Science Nanotechnology
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