Modified triglycine sulphate (TGS) single crystals for pyroelectric infrared detector applications

Effect of caesium and cerium,l-alanine and caesium +l-alanine impurities are investigated on ferroelectric and pyroelectric properties of TGS crystals. Dielectric constant and loss, pyroelectric coefficient, spontaneous polarization and coercive field measurements of these modified crystals, as a function of temperature are reported. Caesium and cerium did not affect the electrical properties of TGS crystals significantly, whereasl-alanine- and, especially, Cs +l-alanine-doped TGS crystals exhibited promising improvements in pyroelectric properties, up to 48 °C, as compared to pure TGS crystals.

[1]  C. B. Sawyer,et al.  Rochelle Salt as a Dielectric , 1930 .

[2]  P. Lock.  Doped Triglycine Sulfate for Pyroelectric Applications , 1971 .

[3]  H. Beerman.  The pyroelectric detector of infrared radiation , 1969 .

[4]  J. P. Remeika,et al.  Ferroelectricity of Glycine Sulfate , 1956 .

[5]  R. B. Lal,et al.  Simple, low‐cost reciprocating crystallizer for solution crystal growth , 1983 .

[6]  E. A. Wood,et al.  Monoclinic glycine sulfate: crystallographic data , 1957 .

[7]  J. Novotný,et al.  A contribution to the study of the influence of impurities on the growth and some physical properties of TGS single crystals , 1971 .

[8]  Yao Xi,et al.  Pyroelectric properties of the alanine and arsenic-doped triglycine sulfate single crystals , 1983 .

[9]  M. Tsedrik,et al.  Triglycine sulphate single crystals growing doped with copper and cobalt ions and study of their dielectric properties , 1976 .

[10]  R. G. Taylor,et al.  Pyroelectric image tubes , 1973 .

[11]  A. Bhalla,et al.  Pyroelectric properties of a new alanine- and phosphate-substituted triglycine sulphate (ATGSP) crystal , 1983 .

[12]  R. Byer,et al.  Pyroelectric Coefficient Direct Measurement Technique and Application to a Nsec Response Time Detector , 1972, IEEE Transactions on Sonics and Ultrasonics.

[13]  V. Nestler,et al.  Filter correlation photometer , 1983 .

[14]  Fang Changshui,et al.  Study of the growth and pyroelectric properties of TGS crystals doped with aniline-family dipolar molecules , 1987 .