000 023520000a22003490004500
003 EG-GICUC
005 20250223025012.0
008 061031s2006 ua a f m 000 0 eng d
040 _aEG-GICUC
_beng
_cEG-GICUC
041 0 _aEng
049 _aDeposite
097 _aM.Sc
099 _aCai01.12.20.M.Sc.2006.Se.C.
100 0 _aSeham Kamal Mohamed
245 1 0 _aConstruction of a crystallizer unit and its complete controlling systems and study of some parameters of TGS ferroelectric crystal /
_cSeham Kamal Mohamed ; Supervised Mohamed Amin Soliman , Hamdy Mohamed Osman , Sobhy Saeed Ibrahim
246 1 5 _aعمل وحدة انماء بلورى بنظام تحكم متكامل و دراسة بعض خواص بلورة كبريتات ثلاثى الجليسين الفيروكهربية
260 _aCairo :
_bSeham Kamal Mohamed ,
_c2006
300 _a113P :
_bill ;
_c30cm
502 _aThesis (M.Sc.) - Cairo University - Faculty Of Science - Department Of Physics
520 _aThe present study deals with constructing an automatic low - cost crystallizer systemThe study of the produced sample is important to judge the performance of the constructed unitA well - known TGS sample was grown and some physical properties of the produced crystal are measured and then compared it with its published resultsTriglycine sulfate (NH2CH2COOH) 3H2SO4 (TGS) is a well known ferroelectric material since 1956 , has large pyroelectric coefficient and low dielectric constant (40) and it has been an important material used in the fabrication of infrared (IR) detectorsPure TGS shows a typical second order ferroelectric phase transition at the Curie point TC=49?CAbove the Curie temperature it belongs to non - polar point group 2 / m of the monoclinic systemBelow TC , spontaneous polarization PS arises along the b - axis of the polar point group 2 of the monoclinic systemThe crystal is non piezoelectric in the paraelectric state
530 _aIssued also as CD
653 4 _aCrystallizer
653 4 _alow - cost system
653 4 _aTGS crystal
700 0 _aHamdy Mohamed Osman ,
_eSupervisor
700 0 _aMohamed Amin Soliman ,
_eSupervisor
700 0 _aSobhy Saeed Ibrahim ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aAmira
_eCataloger
905 _aMustafa
_eRevisor
942 _2ddc
_cTH
999 _c3537
_d3537