Influence of pyroelectric charges on the degree of polarization of TGS crystals

Poprawski, R.; Μróz, J.

doi:10.1080/00150198108008063

Cited by 5 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of the pyroelectric coefficient in the cooling run was lower by about 13-28% in comparison with the value obtained in the heating run for TGS and TGSP crystals. A similar effect was observed for undoped TGS by Poprawski et al [16], and it was suggested that during cooling, breaking of the domain structure as well as neutralization of the pyroelectric charges by the polarization within the domains occurs, and a lower value of pyroelectric coefficient is observed in the cooling run.…”

Section: Pyroelectric Propertiessupporting

confidence: 80%

Pyroelectric properties of phosphoric acid-doped TGS single crystals

Saxena¹,

Fahim²,

Gupta³

et al. 2003

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Pyroelectric properties of phosphoric acid (H3PO4)-doped triglycine sulfate (TGSP) single crystals grown from solutions containing 0.1–0.5 mol of H3PO4 have been studied. Incorporation of H3PO4 into the crystal lattice is found to induce an internal bias field (Eb) and is observed through the presence of a sustained polarization and pyroelectricity beyond the transition temperature. The internal bias field has been estimated theoretically by fitting the experimentally measured data on temperature dependence of the pyroelectric coefficient (λ), dielectric constant (ε′) and polarization (P). A high Eb value in the range 9 × 103–15.5 × 104 V m−1 is obtained for crystals grown with 0.1–0.5 mol of H3PO4 in the solution, and a specific concentration of 0.2–0.25 mol of H3PO4 in the solution during crystal growth is found to be optimum for a high figure of merit for detectivity, Fd = 428 µC m−2 K−1.

show abstract

Section: Pyroelectric Propertiessupporting

confidence: 80%

Pyroelectric properties of phosphoric acid-doped TGS single crystals

Saxena¹,

Fahim²,

Gupta³

et al. 2003

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

Thermally Stimulated Charge and Light Emissions from Unirradiated LiNbO3 Single Crystals and Optical Spectra of the Light

Tomita

Fukuda

Takeuchi

1992

Phys. Stat. Sol. (a)

View full text Add to dashboard Cite

Thermally stimulated charge emission (TSCE) and thermally stimulated light emission (TSLE) from poled and unirradiated single crystals of LiNbO3 ar recorded simulataneously, when the crystal temperature is varied continuously between 80 and 600 K in vacuum (≈ 10−5 Pa). The TSCE shows sudden changes in intensity coinciding with the TSLE which consists of a series of light pules, so that the TSCE glow curve has many discontinuous points. The peak temperature and intensity of the TSCE, and also the intensity and occurrence of the TSLE depend upon the orientation of the crystal face and the direction of the temperature gradient in the crystal. Most of the light pulses have very short durations and have line‐like spectra, the wavelengths of which differ from each other irregularly pulse by pulse, independent of the above conditions and are distributed over the range measured, 200 to 800 nm. Field electron emission and charge carrier recombination may cause most of the TSCE and TSLE, respectively.

show abstract

Thermally stimulated light emission from the linear pyroelectric and ferroelectric surfaces

Poprawski¹,

Kolarz²

1989

Journal of Physics and Chemistry of Solids

View full text Add to dashboard Cite

Influence of pyroelectric charges on the degree of polarization of TGS crystals

Cited by 5 publications

References 9 publications

Pyroelectric properties of phosphoric acid-doped TGS single crystals

Pyroelectric properties of phosphoric acid-doped TGS single crystals

Thermally Stimulated Charge and Light Emissions from Unirradiated LiNbO3 Single Crystals and Optical Spectra of the Light

Thermally stimulated light emission from the linear pyroelectric and ferroelectric surfaces

Contact Info

Product

Resources

About