Heat‐resistant unfired phosphate ceramics with carbon nanotubes for electromagnetic application. Issue 11 (25th July 2014)

• Record Type: Journal Article
• Authors: Plyushch, Artyom; Bychanok, Dzmitry; Kuzhir, Polina; Maksimenko, Sergey; Lapko, Konstantin; Sokol, Alexey; Macutkevic, Jan; Banys, Juras; Micciulla, Federico; Cataldo, Antonino; Bellucci, Stefano
• Is Part Of: Physica status solidi. Volume 211:Issue 11(2014:Nov.)
• Page Start: 2580
• Page End: 2585
• Publication Date: 2014-07-25
• Subjects: Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201431306
• Languages: English
• ISSNs: 1862-6300

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssa201431306-sec-0001" sec-type="section"> <p>Composite materials, containing low concentrations of carbon nanotubes (CNTs) of three different diameters and heat‐resistant phosphate ceramic as a matrix were prepared by cold‐pressing method. Their dielectric properties were studied at room temperature in a wide frequency range (20 Hz–1 MHz). It was found experimentally and proved theoretically via modeling of the composites as a random capacitor–resistor–diode network that electrical percolation concentration depends significantly on the diameter of the nanoinclusions. The main conclusion is that the best candidate providing both the lower percolation threshold and high absolute values of ac conductivity is thinner carbon nanotubes (in our particular case, 8–15 nm).</p> </sec> </abstract>