Uma kuqhathaniswa ne-tungsten cathodes,i-lanthanum hexaborate (I-LaB6) ama-cathode anezinzuzo ezifana nomsebenzi wokuphunyuka wama-electron aphansi, ukuminyana kwama-electron aphezulu, ukumelana nokuqhuma kwe-ion, ukumelana kahle nobuthi, ukusebenza okuzinzile, nempilo ende yesevisi. Isetshenziswe ngempumelelo kumathuluzi ahlukahlukene anembe kakhulu namathuluzi afana nemithombo ye-plasma, i-electron microscopy yokuskena, imishini ye-electron beam lithography, i-Auger spectroscopy, nama-electron probes. Impahla eyisisekelo yeI-LaB6, I-LaB6, okohlobo lwe-CsCI cubic lattice primitive. Ama-athomu e-Lanthanum ahlala emagumbini ayisishiyagalombili e-cube. Ama-athomu e-boron ayisithupha akha i-octahedron futhi atholakala phakathi nendawo ye-cube. I-covalent bond yakhiwa phakathi kwe-BB, futhi ama-electron anganele ngesikhathi sokuhlangana phakathi kwe-BB anikezwa i-athomu ye-lanthanum. I-La inenombolo ye-electron ye-valence engu-3, futhi ama-electron angu-2 kuphela adingekayo ukuze abambe iqhaza ekuhlanganiseni. I-electron engu-1 esele iba i-electron yamahhala. Ngakho-ke, ibhondi ye-La-B iyisibopho sensimbi esine-conductivity ephezulu kakhulu kanye ne-conductivity enhle. Ngenxa yokuhlangana okuhlangene phakathi kwama-athomu angu-B, amandla ebhondi aphezulu, amandla ebhondi aqinile, nobude bebhondi bufushane, okuholela ekwakhekeni okuhlangene kwe-LaB6. Inezici ezithile ezinjengokuqina okuphezulu, indawo ephezulu yokuncibilika, nokumelana eduze nayoizinsimbi zomhlaba ezingavamile.
Isikhathi sokuthumela: Sep-28-2023