1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Ferroelectric phase transition in polycrystalline KTaO3 thin film revealed by terahertz spectroscopy
Rent:
Rent this article for
USD
10.1063/1.3624710
/content/aip/journal/apl/99/5/10.1063/1.3624710
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/5/10.1063/1.3624710
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

XRD pattern of the KTO thin film deposited on (0001) sapphire. Peaks of the substrate are denoted as S. All other peaks correspond to the perovskite KTaO3 phase.8 Plain-view FE-SEM micrograph of the film is shown in the inset.

Image of FIG. 2.
FIG. 2.

(Color online) (a) THz time-domain wave forms measured at 20 K with a bare sapphire substrate and with a 200 nm thick KTO film deposited on the substrate; 0: direct pass, 1: first internal Fabry-Pérot reflection. (b) Spectra of complex refractive index obtained from the direct pass (closed symbols) and from the first echo (open symbols). Thicknesses of the two substrates differ by 2.3 μm (left plot) and 0 μm (right plot).

Image of FIG. 3.
FIG. 3.

(Color online) (a) Real and (b) imaginary part of the permittivity of KTO film for selected temperatures; symbols: experiment, lines: fits using Eq. (1). Microwave permittivity at 16 GHz is also shown in (a).

Image of FIG. 4.
FIG. 4.

(a) Soft mode frequency ω0 and relaxation strength g as a function of temperature obtained from the fits of THz spectra. (b) Real part of the permittivity at 16 GHz.

Loading

Article metrics loading...

/content/aip/journal/apl/99/5/10.1063/1.3624710
2011-08-04
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ferroelectric phase transition in polycrystalline KTaO3 thin film revealed by terahertz spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/5/10.1063/1.3624710
10.1063/1.3624710
SEARCH_EXPAND_ITEM