L-alanine doped TGS

 ATGS
L-alanine doped DTGS ADTGS
atgs.gif (4221 bytes) 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.
Doping with La -Alanine significantly improves and orders domain structure and turns the material to a hard ferroelectric.

Properties of ATGS and ADTGS

  Units and test conditions ATGS ADTGS
Formula   (NH2CH2OOH)3H2S04 (ND2CD2OOD)3D2S04
Crystal Structure   P21 P21
Density g/cm3 1.69* 1.7*
Curie Temperature Tc °C 49 57-60**
La -Alanine concentration
in solution		 % wt. 10, 20, 30 10, 20, 30
* Depends on doping level.
** Depends on deuteration level.

Standard specifications

Dimensions*, mm

Cleavage Plane

ATGS

 5 x 5 x 1; 10 x 10 x 1; 25 x 25 x 1

(010)

ADTGS

 5 x 5 x 1; 10 x 10 x 1; 25 x 25 x 1

(010)
* On special request up to 120 x 120 mm for ATGS and up to 100 x 100 mm for ADTGS.

[ Home page ] [ Sputtering targets ] [ Semiconductors ] [ Beryllium products ] 

GIRMET Ltd.  5, B.Tolmachevskij per., Moscow 119017, Russia
Tel: (7 495)956-0918, fax: (7 495)956-4944
E-mail:sales@girmet.com