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, ingeye-CsCI yohlobo lwe-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 aphakeme, amandla ebhondi aqinile, nobude bebhondi bufushane, okuholela ekwakhekeni okuhlangene kwe-LaB6.Inezici ezithile ezinjengokuqina okuphezulu, indawo ephezulu yokuncibilika, nokumelana eduze kwayoizinsimbi zomhlaba ezingavamile.
Isikhathi sokuthumela: Sep-28-2023