東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Barium strontium titanate thin films...

Wang, Danyang.

Linked to FindBook

Google Book

Amazon

博客來

Barium strontium titanate thin films for electro-optic applications.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Barium strontium titanate thin films for electro-optic applications./
Author:	Wang, Danyang.
Description:	185 p.
Notes:	Source: Dissertation Abstracts International, Volume: 67-05, Section: B, page: 2786.
Contained By:	Dissertation Abstracts International67-05B.
Subject:	Engineering, Materials Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3215683
ISBN:	9780542691010

Barium strontium titanate thin films for electro-optic applications.
Wang, Danyang.

Barium strontium titanate thin films for electro-optic applications. - 185 p.

Source: Dissertation Abstracts International, Volume: 67-05, Section: B, page: 2786.

Thesis (Ph.D.)--Hong Kong Polytechnic University (People's Republic of China), 2006.

This thesis presents the results of experiments on the deposition as well as the structural, electro-optic and optical properties of Ba0.7 Sr0.3TiO3 (BST) thin films. The applications of these thin films in rib waveguides and Mach-Zehnder electro-optical modulators are demonstrated.

ISBN: 9780542691010Subjects--Topical Terms:

1017759
Engineering, Materials Science.

Barium strontium titanate thin films for electro-optic applications.
LDR:03697nmm 2200313 4500 001 1825795
005 20061211115814.5
008 130610s2006 eng d
020 $a 9780542691010
035 $a (UnM)AAI3215683
035 $a AAI3215683
040 $a UnM $c UnM
100 1 $a Wang, Danyang. $3 1914790
245 1 0 $a Barium strontium titanate thin films for electro-optic applications.
300 $a 185 p.
500 $a Source: Dissertation Abstracts International, Volume: 67-05, Section: B, page: 2786.
500 $a Advisers: C. L. Choy; H. L. W. Chan.
502 $a Thesis (Ph.D.)--Hong Kong Polytechnic University (People's Republic of China), 2006.
520 $a This thesis presents the results of experiments on the deposition as well as the structural, electro-optic and optical properties of Ba0.7 Sr0.3TiO3 (BST) thin films. The applications of these thin films in rib waveguides and Mach-Zehnder electro-optical modulators are demonstrated.
520 $a Highly epitaxial Ba0.7Sr0.3TiO3 thin films were deposited on single crystal substrates using pulsed laser deposition. Using X-ray diffraction, the structure of the thin films was studied with regard to the effects of the processing conditions (deposition temperature and oxygen partial pressure) and the substrate. It was found that both the processing conditions and the substrate had significant effects on the lattice deformation of the thin films. The surface morphology of Ba0.7Sr 0.3TiO3 thin films was studied using atomic force microscopy. The grain size and surface roughness, which are related to the optical loss, depend strongly on the processing conditions. In order to achieve good crystalline quality, high degree of epitaxy, and low optical loss in the film, the optimum deposition temperature and oxygen partial pressure were found to be 750°C and 200 mTorr, respectively.
520 $a The in-plane dielectric and ferroelectric properties were investigated in order to determine whether the Ba0.7Sr0.3TiO 3 film was in the ferroelectric or paraelectric state at room temperature. The ferroelectric activity of the film was significantly modified by the oxygen partial pressure and the substrate. For a Ba0.7Sr0.3TiO 3 thin film grown on MgO (001) substrate at 750°C under an oxygen pressure of 200 mTorr, the Curie temperature was upshifted to 88°C, and a well-defined hysteresis loop was observe at room temperature.
520 $a The electro-optic properties of Ba0.7Sr0.3TiO 3 thin film were investigated with regard to the effects of processing conditions (deposition temperature and oxygen partial pressure) and the substrate using the modified Senarmont method. It was found that the processing conditions significantly affected the electro-optic properties of the films and different electro-optic behaviors were observed for films deposited on different substrates. Films grown on MgO and SrTiO3 (STO) substrates exhibited a predominantly quadratic electro-optic effect, whereas films grown on LaAlO3 (LAO) and (LaAlO3)0.3(Sr2 AlTaO6)0.35 (LSAT) substrates showed a linear electro-optic behavior. A high quadratic electro-optic coefficient of 10.0 x 10-18 m2/V2 was achieved in the films grown on MgO (001) substrate under the optimum conditions. Since the BST/MgO structure led to good light confinement within the film, MgO was chosen as the substrate for waveguide fabrication. (Abstract shortened by UMI.)
590 $a School code: 1170.
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0794
710 2 0 $a Hong Kong Polytechnic University (People's Republic of China). $3 1288341
773 0 $t Dissertation Abstracts International $g 67-05B.
790 1 0 $a Choy, C. L., $e advisor
790 1 0 $a Chan, H. L. W., $e advisor
790 $a 1170
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3215683