Water-soluble Triglycine Sulfate crystals have technological importance for room-temperature infrared detectors, earth exploration, radiation monitoring and astronomical telescopes. TGS is the best material applied as a sensitive element in pyroelectric sensors due to its high pyroelectric coefficient, reasonably low dielectric constant, and the best quality factor. Pyroelectric sensors based on TGS are uniformly sensitive to radiation in wavelength range from ultraviolet to far infrared and do not require cryogen cooling for operation. Using of deuterated DTGS crystals allows to extend temperature range of sensing due to their higher Curie temperature.

            Triglycine Sulphate                         TGS       (NH2CH2COOH)3 H2SO4
            Deuterated Triglycine Sulphate       DTGS       (ND2CD2COOD)3 D2SO4
            L-α-Alanine Doped TGS                         ATGS       L-α-Ala (NH2CH2COOH)3 H2SO4
            L-α-Alanine Doped DTGS                        ADTGS       L-α-Ala (ND2CD2COOD)3 D2SO4

Doping with La -Alanine significantly improves and orders domain structure and turns the material to a hard ferroelectric.

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