DocumentCode :
1327096
Title :
High Tunable 
Thin Films for Microwave Applications at Cryogenic Temperature
Author :
Li, Na ; Wang, Xu ; Xia, Fengjin ; Wang, Jia ; Xu, Yunhui ; Sun, Liang ; Zhu, Beiyi ; Zhu, Xiaohong ; He, Yusheng
Author_Institution :
Nat. Lab. for Supercond., Beijing Nat. Lab. for Condensed Matter Phys., Beijing, China
Volume :
22
Issue :
11
fYear :
2012
Firstpage :
583
Lastpage :
585
Abstract :
La0.67Sr0.33MnO3/Ba0.05Sr0.95TiO3 (LSMO/BST) heterostructure thin film was grown on single crystal MgO substrate by pulsed laser deposition. The phase structure and dielectric properties of the film were investigated. The results show that the permittivity of the BST thin film decreased from 1170 to 350 (70% tuning) with the bias voltage increasing from 0 to 80 V at 63 K. The effective loss tangent of the BST thin film is in the range of 0.009-0.017.
Keywords :
barium compounds; cryogenics; dielectric properties; lanthanum compounds; magnesium compounds; manganese compounds; pulsed laser deposition; strontium compounds; thin films; titanium compounds; La0.67Sr0.33MnO3-Ba0.05Sr0.95TiO3; MgO; bias voltage; cryogenic temperature; dielectric properties; heterostructure thin film; microwave applications; phase structure; pulsed laser deposition; single crystal substrate; temperature 63 K; voltage 0 V to 80 V; Cryogenics; Dielectric losses; Frequency measurement; Microwave theory and techniques; Permittivity; Varactors; ${rm Ba}_{0.05}{rm Sr}_{0.95} {rm TiO} _{3}$ (BST) thin film; ${rm La}_{0.67}{rm Sr}_{0.33} {rm MnO} _{3}$ (LSMO) thin film; varactor;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2012.2224100
Filename :
6339019
Link To Document :
