Qhov sib txawv tseem ceeb ntawm Schottky qhov tsis xws thiab Frenkel qhov tsis xws luag yog tias Schottky qhov tsis xws luag txo qhov ntom ntawm cov siv lead ua thaum Frenkel qhov tsis xws luag tsis cuam tshuam rau qhov ntom ntawm cov siv lead ua. Sib nrug los ntawm qhov sib txawv tseem ceeb saum toj no, lwm qhov sib txawv tseem ceeb ntawm Schottky qhov tsis xws luag thiab Frenkel qhov tsis xws luag yog tias Schottky qhov tsis xws luag ua rau txo qis ntawm cov khoom siv lead ua thaum Frenkel qhov tsis xws luag tsis cuam tshuam rau cov khoom siv lead ua.
Lub sij hawm siv lead ua lattice piav qhia txog kev sib haum xeeb ntawm cov atoms ntawm cov siv lead ua. Schottky defect thiab Frenkel defect yog ob hom kev tsis xws luag uas tshwm sim nyob rau hauv ib tug siv lead ua lattice. Ib qho chaw tsis xws luag yog ib qho chaw seem uas tsim vim qhov poob ntawm ib qho atom los ntawm cov siv lead ua lattice. Cov teeb meem no ua rau muaj qhov tsis sib xws ntawm cov lattices.
Schottky Defect yog dab tsi?
Schottky defect yog ib daim ntawv ntawm qhov tsis xws luag uas tsim los ntawm kev poob ntawm ib qho atom hauv stoichiometric units ntawm crystal lattice. Qhov teeb meem no tau txais nws lub npe tom qab tus kws tshawb fawb W alter H. Schottky. Peb tuaj yeem soj ntsuam qhov teeb meem no hauv cov ionic lossis nonionic crystals. Qhov teeb meem no tshwm sim thaum lub tsev thaiv tawm ntawm cov iav siv lead ua.
Daim duab 01: Schottky Defect hauv NaCl
Txawm hais tias lub lattice poob ib qho atom, nws tsis cuam tshuam rau tus nqi tshuav ntawm cov lattice vim hais tias cov atoms tawm hauv ib chav tsev ntawm lub lattice. Ib chav tsev stoichiometric muaj qhov sib txawv ntawm cov atoms hauv qhov sib npaug.
Thaum qhov teeb meem no tshwm sim, nws txo qhov ntom ntawm cov iav siv lead ua. Daim ntawv no ntawm qhov tsis xws luag yog muaj nyob rau hauv ionic compounds. Thaum nws tshwm sim nyob rau hauv nonionic crystals, peb hu nws lub vacancy defect. Feem ntau ntawm cov sij hawm, qhov teeb meem no tshwm sim nyob rau hauv crystal lattices muaj atoms nrog ze li ntawm qhov sib npaug. Piv txwv li: NaCl lattice, KBr lattice, thiab lwm yam.
Frenkel Defect yog dab tsi?
Frenkel defect yog ib daim ntawv ntawm qhov tsis xws luag uas qhov tsis xws luag tshwm sim vim poob ntawm ib qho atom los yog me me ion los ntawm cov siv lead ua lattice. Qhov kev poob no tsim ib qho chaw tsis muaj nyob hauv lub lattice. Synonyms rau qhov tsis xws luag yog Frenkel teeb meem thiab Frenkel khub. Qhov tsis xws luag tau txais nws lub npe tom qab tus kws tshawb fawb Yakov Frenkel.
Yog tias ib qho me me tawm ntawm cov iav siv lead ua, nws yog cation (tus nqi zoo ion). Qhov no ion nyob ib qho chaw nyob ze ntawm qhov chaw tsis muaj. Yog li ntawd, qhov teeb meem no tsis cuam tshuam rau qhov ntom ntawm cov iav siv lead ua. Qhov no yog vim hais tias cov atom los yog ions tsis tag tawm ntawm lub lattice. Daim ntawv no ntawm qhov tsis xws luag yog muaj nyob rau hauv ionic lattices. Tsis zoo li hauv Schottky qhov tsis xws luag, qhov teeb meem no tshwm sim hauv lattices nrog atoms lossis ions muaj qhov sib txawv.
Qhov txawv ntawm Schottky Defect thiab Frenkel Defect yog dab tsi?
Schottky defect yog ib daim ntawv ntawm qhov tsis xws luag uas tsim los ntawm kev poob ntawm ib qho atom hauv stoichiometric units ntawm crystal lattice. Frenkel defect yog ib daim ntawv ntawm qhov tsis xws luag uas qhov tsis xws luag tshwm sim vim poob ntawm ib qho atom los yog me me ion los ntawm cov siv lead ua lattice. Schottky qhov tsis xws luag txo qhov ntom ntawm cov siv lead ua lattice thaum Frenkel qhov tsis xws luag tsis cuam tshuam rau qhov ntom ntawm cov iav lattice.
Summary – Schottky Defect vs Frenkel Defect
Point defects yog qhov tsis xws luag hauv cov khoom siv lead ua lattices uas tshwm sim vim qhov poob ntawm atoms lossis ions los ntawm cov lattice thiab yog li, tsim ib qho chaw tsis muaj. Schottky tsis xws luag thiab Frenkel tsis xws luag yog ob hom kev tsis xws luag. Qhov txawv ntawm Schottky defect thiab Frenkel defect yog tias Schottky qhov tsis xws luag txo qhov ntom ntawm cov siv lead ua thaum Frenkel qhov tsis xws luag tsis cuam tshuam rau qhov ntom ntawm cov siv lead ua.
