Anomalous ferroelectricity in nanocomposites from hydrogen-bonded ferroelectrics with oxidized MWCNT

The present work reports anomalous ferroelectric properties of two nanocomposites containing oxidized multiwalled carbon nanotubes (ox-MWCNT) as an electrically conductive filler combined with each of hydrogen-bonded ferroelectrics of potassium dihydrogen phosphate (KDP) and triglycine sulfate (TGS). It was shown that the influence of ox-MWCNT led to the anomalous increase in a phase transition point, domain-wall freezing temperatures and coercive fields in ferroelectric parts of the composites. The OH radicals equipped on the carbon nanotube surface after oxidation were responsible for the observed anomalies.