Ferroelectric thin-film characterization using a coplanar waveguide bandstop filter

AbstractThe polarization change invoked by bipolar pulse cycling stress (voltage cycling) was investigated in detail for a Pt/PZT/Pt ferroelectric capacitor. The remnant polarization increased after voltage cycling, then, it decreased during storage and approached to the initial value. The estimated activation energy of the decay of the gained-polarization during the storage was 0.52eV. This value suggests that the valence change between Ti3+ and Ti4+ is the key of this phenomenon. The model where Ti-related defects pin the polarization was introduced to explain the result. Based on the findings and the model, a combination of voltage cycling and storage is useful to characterize internal defects. We propose this characterization method, named voltage cycling method, as an effective way to analyze internal defects in a ferroelectric capacitor.

Download Full-text

Ferroelectric thin film characterization using superconducting microstrip resonators

IEEE Transactions on Applied Superconductivity ◽

10.1109/77.403116 ◽

1995 ◽

Vol 5 (2) ◽

pp. 2575-2578 ◽

Cited By ~ 48

Author(s):

D. Galt ◽

J.C. Price ◽

J.A. Beall ◽

T.E. Harvey

Keyword(s):

Thin Film ◽

Ferroelectric Thin Film ◽

Thin Film Characterization ◽

Microstrip Resonators

Download Full-text

Ferroelectric thin-film based electrically tunable Ku-band coplanar waveguide components

2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157) ◽

10.1109/mwsym.2001.966933 ◽

2002 ◽

Cited By ~ 5

Author(s):

G. Subramanyam ◽

N. Mohsina ◽

A. Al Zaman ◽

F. Miranda ◽

F. Van Keuls ◽

...

Keyword(s):

Thin Film ◽

Coplanar Waveguide ◽

Ferroelectric Thin Film ◽

Waveguide Components ◽

Ku Band

Download Full-text

High Frequency LIMM - A Powerful Tool for Ferroelectric Thin Film Characterization

Integrated Ferroelectrics ◽

10.1080/10584580215380 ◽

2002 ◽

Vol 46 (1) ◽

pp. 243-257 ◽

Cited By ~ 27

Author(s):

T. Sandner ◽

G. Suchaneck ◽

R. Koehler ◽

A. Suchaneck ◽

G. Gerlach

Keyword(s):

Thin Film ◽

High Frequency ◽

Ferroelectric Thin Film ◽

Thin Film Characterization

Download Full-text

A Reconfigurable Coplanar Waveguide Bowtie Antenna Using an Integrated Ferroelectric Thin-Film Varactor

International Journal of Antennas and Propagation ◽

10.1155/2012/249019 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6 ◽

Cited By ~ 2

Author(s):

K. C. Pan ◽

D. Brown ◽

G. Subramanyam ◽

R. Penno ◽

H. Jiang ◽

...

Keyword(s):

Thin Film ◽

Coplanar Waveguide ◽

Ferroelectric Thin Film ◽

Printed Antenna ◽

Dc Voltage ◽

Barium Strontium ◽

Radiating Element ◽

Bowtie Antenna ◽

Feed Network ◽

Bst Thin Film

A novel printed antenna with a frequency reconfigurable feed network is presented. The antenna consists of a bowtie structure patch radiating element in the inner space of an annulus that is on a nongrounded substrate with a ferroelectric (FE) Barium Strontium Titanate (BST) thin film. The bowtie patch is fed by a coplanar waveguide (CPW) transmission line that also includes a CPW-based BST shunt varactor. Reconfiguration of the compact 8 mm × 8 mm system has been demonstrated by shifting the antenna system’s operating frequency 500 MHz in the 7–9 GHz band by applying a DC voltage bias.

Download Full-text