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Electronic properties and microstruc...

Jiang, Tao.

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Electronic properties and microstructures of amorphous silicon carbonitrides ceramics derived from polymer precursors.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Electronic properties and microstructures of amorphous silicon carbonitrides ceramics derived from polymer precursors./
Author:	Jiang, Tao.
Description:	147 p.
Notes:	Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 7143.
Contained By:	Dissertation Abstracts International70-11B.
Subject:	Engineering, Materials Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3383663
ISBN:	9781109484106

Electronic properties and microstructures of amorphous silicon carbonitrides ceramics derived from polymer precursors.
Jiang, Tao.

Electronic properties and microstructures of amorphous silicon carbonitrides ceramics derived from polymer precursors. - 147 p.

Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 7143.

Thesis (Ph.D.)--University of Central Florida, 2009.

Polymer-derived ceramics (PDCs) are a new class of high-temperature materials synthesized by thermal decomposition of polymeric precursors. These materials possess many unique features as compared with conventional ceramics synthesized by powder metallurgy based processing. For example, PDCs are neither amorphous nor crystalline. Instead, they possess nano-domain structures. Due to the direct chemical-to-ceramic processing, PDCs can be used for making components and devices with complex shapes. Thus, understanding the properties and structures of these materials are of both fundamental and practical interest. In this work, the structures and electronic behavior of polymer-derived amorphous silicon carbonitrides (SiCNs) were investigated.

ISBN: 9781109484106Subjects--Topical Terms:

1017759
Engineering, Materials Science.

Electronic properties and microstructures of amorphous silicon carbonitrides ceramics derived from polymer precursors.
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020 $a 9781109484106
035 $a (UMI)AAI3383663
035 $a AAI3383663
040 $a UMI $c UMI
100 1 $a Jiang, Tao. $3 1023418
245 1 0 $a Electronic properties and microstructures of amorphous silicon carbonitrides ceramics derived from polymer precursors.
300 $a 147 p.
500 $a Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 7143.
500 $a Adviser: Linan An.
502 $a Thesis (Ph.D.)--University of Central Florida, 2009.
520 $a Polymer-derived ceramics (PDCs) are a new class of high-temperature materials synthesized by thermal decomposition of polymeric precursors. These materials possess many unique features as compared with conventional ceramics synthesized by powder metallurgy based processing. For example, PDCs are neither amorphous nor crystalline. Instead, they possess nano-domain structures. Due to the direct chemical-to-ceramic processing, PDCs can be used for making components and devices with complex shapes. Thus, understanding the properties and structures of these materials are of both fundamental and practical interest. In this work, the structures and electronic behavior of polymer-derived amorphous silicon carbonitrides (SiCNs) were investigated.
520 $a The materials were synthesized by pyrolysis of a commercially available liquid precursor. Ceramic materials with varied structures/properties were successfully synthesized by modifying the precursor and using different pyrolysis temperatures. The structures of the obtained materials were studied using XRD, solid state NMR, EPR, FTIR and Raman Spectroscope. The electronic behavior of the materials was investigated by measuring I-V curves, Hall effects, temperature dependent conductivity. The experiments were also performed to measure UV-Visible absorption and dielectric properties of the materials. This work leads to the following significant progresses: (i) developed quantitative technique for measuring free carbon concentration; (ii) achieved better understanding of the electronic conduction mechanisms and measured electronic structures of the materials for the first time; and (iii) demonstrated that these materials possess unusual dielectric behavior and provide qualitative explanations.
590 $a School code: 0705.
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0794
710 2 $a University of Central Florida. $3 1018467
773 0 $t Dissertation Abstracts International $g 70-11B.
790 1 0 $a An, Linan, $e advisor
790 $a 0705
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3383663