Hom kev coj ua yam twg yog qhia los ntawm nonstoichiometric nio?

Cov txheej txheem:

Hom kev coj ua yam twg yog qhia los ntawm nonstoichiometric nio?
Hom kev coj ua yam twg yog qhia los ntawm nonstoichiometric nio?
Anonim

1 Thaum Ni qhov chaw ua haujlwm raug qhia, cov nonstoichiometric nickel oxide dhau los ua ib qho khoom siv hluav taws xob. Ob qho tib si theoretical thiab kev sim tau pom tau tias nyob rau hauv cov xwm txheej uas nplua nuj oxygen tsim lub zog ntawm Ni qhov chaw ua haujlwm yog qhov qis tshaj plaws rau txhua qhov tsis xws luag, ua rau p-hom conduction.

Is NiO N-type?

Yog li, lawv dhau los p-type. Feem ntau binary hloov pauv hlau oxides yog n-hom piv txwv li, ZnO yog n-hom rau non-stoichiometry thiab Zn-interstitials. Tab sis, NiO yog p-hom vim li cas Dr. Pierluigi Traverso tau piav qhia saum toj no.

Vim li cas NiO yog P-hom semiconductor?

Tag nrho cov TCO zaj duab xis no yog n-hom semiconductors nrog dawb electrons uas tshwm sim los ntawm extrinsic pub nrog rau cov neeg pub dawb. … Ib qho khoom siv hlau oxide, npib tsib xee oxide (NiO), yog tus neeg sib tw rau p-hom pob tshab ua yeeb yaj kiab vim nws yog p-hom semiconductor nrog a band sib txawv zog ntawm 3.6 txog 4.0 eV[7, 8].

Dab tsi yog cov tshuaj tsis-stoichiometric muab piv txwv?

Feem ntau ntawm cov nonstoichiometric tebchaw yog hloov pauv hlau oxides, tab sis kuj suav nrog fluorides, hydrides, carbides, nitrides, sulfides, tellurides, thiab lwm yam [4, 12, 13]. Cov nonstoichiometric tebchaw uas twb muaj lawm tsuas yog nyob rau hauv lub condensed lub xeev feem ntau cais nyob rau hauv cov nqe lus ntawm lub ntsiab muaj pes tsawg leeg.

Qhov twg hauv qab no sawv cev rau qhov tsis yog-stoichiometric compound?

Fe3O4 yog ib qho tsis yog-stoichiometric compound vim hais tias nyob rau hauv nws, qhov piv ntawm cov cations rau cov anions yuav txawv ntawm qhov qhia los ntawm cov tshuaj formula.

Pom zoo:

Nthuav cov khoom
Lub sijhawm elongation ntawm kev txhais lus uncharged trnas txav mus rau?
Nyeem ntxiv

Lub sijhawm elongation ntawm kev txhais lus uncharged trnas txav mus rau?

Peptide daim ntawv cog lus; uncharged tRNA txav mus rau qhov E site & tom qab tawm ntawm ribosome; lub mRNA tau hloov pauv 3 lub hauv paus mus rau sab laug, ua rau tRNA bearing dipeptide hloov mus rau P site P site P-site (rau peptidyl) yog qhov thib ob khi qhov chaw rau tRNA hauv ribosome.

Dab tsi yog asbestiform fibers?
Nyeem ntxiv

Dab tsi yog asbestiform fibers?

Raws li siv hauv daim ntawv tshaj tawm no, lo lus asbestiform fibers suav nrog fibers uas muaj lub zog zoo thiab yoog raws, ruaj khov, cov qauv saum npoo tsis muaj qhov tsis xws luag, thiab ntau lwm yam khoom tau piav qhia tom qab. Kev lag luam zoo asbestos yog ib qho piv txwv ntawm asbestiform fiber.

Colleen dewhurst tuag li cas?
Nyeem ntxiv

Colleen dewhurst tuag li cas?

Dewhurst tuag rau hnub Thursday ntawm mob qog noj ntshav ntawm nws lub tsev hauv New York suburb ntawm Lewisboro, hais Tom Viola, tus kws tshaj lij rau lub koomhaum uas nws ua haujlwm, Tus Ua Yeeb Yam Equity. Txawm hais tias ntau phau ntawv sau npe Dewhurst hnub nyoog li 65, nws yog 67, hais tias nws tus khub ntev, Ken Marsolais.