Qhov sib txawv tseem ceeb ntawm spinel thiab inverse spinel qauv yog tias nyob rau hauv spinel qauv, B ions nyob ib nrab ntawm lub octahedral qhov thaum A ions nyob 1/8 th ntawm tetrahedral qhov whereas, nyob rau hauv inverse spinel qauv, tag nrho cov A cations thiab ib nrab ntawm cov B cations nyob octahedral chaw thiab lwm ib nrab ntawm B cations nyob tetrahedral chaw.
Lub sij hawm spinel yog hais txog ib chav kawm ntawm cov zaub mov uas muaj cov tshuaj formula AB2X4. Cov minerals no zoo li crystallize nyob rau hauv lub cubic crystal system. Spinels feem ntau hu ua rubies, tab sis ruby tsis yog spinel.
Spinel Structure yog dab tsi?
A spinel yog ib chav kawm ntawm cov zaub mov uas muaj cov tshuaj AB 2 X 4 Cov qauv no feem ntau yog cubic crystal systems. Hauv cov qauv saum toj no, "X" yog ib qho anion (feem ntau, qhov no anion yog chalcogen xws li oxygen thiab sulfur) thiab cov ions tau teem rau hauv lub cubic kaw lattice. "A" thiab "B" yog cov cations uas nyiam nyob hauv qee qhov lossis tag nrho ntawm cov chaw octahedral thiab tetrahedral hauv cov lattice. Raws li cov qauv dav dav, cov nqi ntawm A thiab B cations yog +2 thiab +3, feem. Txawm li cas los xij, divalent, trivalent thiab tetravalent cations kuj tuaj yeem ua tau hauv qhov kev sib xyaw no. Feem ntau, X anion yog oxygen. Yog tias cov anion yog lwm yam chalcogen, cov qauv hu ua thiospinel qauv.
Nyob hauv cov qauv no, A thiab B cations tuaj yeem ua tib yam hlau uas muaj ob qhov sib txawv. Piv txwv li, magnetite yog cov ntxhia muaj cov tshuaj formula Fe3O4, thiab nws muaj ferrous thiab ferric ions. Feem ntau, peb tuaj yeem faib cov qauv spinel raws li B cation.
Piv txwv li, pawg aluminium spinel, pawg hlau spinel, chromium spinel pawg, cob alt spinel pawg, thiab lwm yam. Cov pab pawg chaw rau cov qauv spinel yog tib yam li cov qauv ntawm pob zeb diamond tshwj tsis yog rau qee kis. Nquag, cov qauv no muaj lub cubic kaw-packed oxide qauv nrog yim tetrahedral thiab plaub qhov chaw octahedral ib chav tsev. Ntawm no, qhov chaw tetrahedral me dua li qhov chaw octahedral. Tsis tas li ntawd, B ions nyob ib nrab ntawm lub qhov octahedral thaum A ions nyob 1/8 th ntawm lub qhov tetrahedral.
Dab tsi yog Inverse Spinel Structure?
Inverse spinel qauv yog ib qho derivative ntawm cov qauv spinel ib txwm ntawm cov ntxhia lattices. Nws kuj tseem siv rau cov zaub mov uas muaj cov qauv dav dav AB 2 X 4 Tsis zoo li cov qauv spinel ib txwm, cov qauv rov qab spinel muaj tag nrho cov A cations thiab Ib nrab ntawm B cations nyob octahedral qhov chaw thaum lwm ib nrab ntawm B cations nyob tetrahedral qhov chaw. Ib qho piv txwv ntawm cov qauv rov qab spinel yog Fe3O4. Ntawm no, ferrous ions yog A cations, thiab ferric ions yog B cations.
Qhov txawv ntawm Spinel thiab Inverse Spinel Structure yog dab tsi?
Spinel thiab inverse spinel yog ob lub pob zeb hauv av uas muaj cov kab lattice siv lead ua. Qhov sib txawv tseem ceeb ntawm spinel thiab inverse spinel qauv yog hais tias nyob rau hauv spinel qauv, B ions nyob ib nrab ntawm lub octahedral qhov thaum A ions nyob 1/8th ntawm lub tetrahedral qhov whereas, inverse spinel qauv, tag nrho cov A cations thiab ib nrab ntawm cov B cations nyob. Cov chaw octahedral thiab lwm ib nrab ntawm B cations nyob tetrahedral qhov chaw.
Hauv qab infographic qhia txog qhov sib txawv ntawm spinel thiab inverse spinel qauv.
Summary – Spinel vs Inverse Spinel Structure
Spinel thiab inverse spinel yog ob lub pob zeb hauv av uas muaj cov kab lattice siv lead ua. Qhov sib txawv tseem ceeb ntawm spinel thiab inverse spinel qauv yog hais tias nyob rau hauv spinel qauv, B ions nyob ib nrab ntawm lub octahedral qhov thaum A ions nyob 1/8th ntawm lub tetrahedral qhov whereas, inverse spinel qauv, tag nrho cov A cations thiab ib nrab ntawm cov B cations nyob. Cov chaw octahedral thiab lwm ib nrab ntawm B cations nyob tetrahedral qhov chaw.
