Ndemanga Yachidule ya Lithium Niobate Crystal ndi Ntchito Zake - Gawo 2: Chidule cha Lithium Niobate Crystal

Ndemanga Yachidule ya Lithium Niobate Crystal ndi Ntchito Zake - Gawo 2: Chidule cha Lithium Niobate Crystal

LinbO3 sichipezeka m'chilengedwe ngati mchere wachilengedwe. Mapangidwe a kristalo a makristasi a lithiamu niobate (LN) adanenedwa koyamba ndi Zachariasen mu 1928. Mu 1955 Lapitskii ndi Simanov anapereka magawo a lattice a hexagonal ndi trigonal system of LN crystal ndi X-ray powder diffraction analysis. Mu 1958, Reisman ndi Holtzberg anapereka pseudoelement ya Li2O-Nb2O5 ndi kusanthula kwamafuta, kusanthula kwa X-ray ndi kuyeza kachulukidwe.

Chithunzi cha gawo chikuwonetsa kuti Li3NbO4, LinbO3, Linb3O8 ndi Li2Nb28O71 zonse akhoza kupangidwa kuchokera ku Li2O-Nb2O5. Chifukwa cha kukonzekera kwa kristalo ndi zinthu zakuthupi, LiNbO yokha3 yaphunziridwa mofala ndikugwiritsidwa ntchito. Malinga ndi lamulo lachidziwitso chamankhwala, LithiumNiobate ayenera kukhala Li3NbO4, ndi LinbO3 iyenera kutchedwa Lithium Metaniobate. Poyambirira, LiNbO3 kwenikweni ankatchedwa Lithiamu Metaniobate crystal, koma chifukwa LN makhiristo ndi ena atatu olimba gawos sanaphunzire kwambiri, tsopano LiNbO3 ndi pafupifupi osayitananso Life Metniobate, koma amadziwika kwambiri ngati Life Niobate.

LN Crystal-WISOPTIC

Makristalo apamwamba kwambiri a LiNbO3 (LN) opangidwa ndi WISOPTIC.com

Malo osungunuka amadzimadzi ndi olimba a LN crystal sikugwirizana ndi chiŵerengero chake cha stoichiometric. Makristasi apamwamba apamwamba omwe ali ndi mutu womwewo ndi zigawo za mchira amatha kukula mosavuta ndi njira yosungunula crystallization pokhapokha ngati zipangizo zomwe zili ndi gawo limodzi lolimba ndi siteji yamadzimadzi zimagwiritsidwa ntchito. Chifukwa chake, makhiristo a LN okhala ndi malo abwino ofananira ndi eutectic point akhala akugwiritsidwa ntchito kwambiri. Makhiristo a LN nthawi zambiri osatchulidwa amatanthauza omwe ali ndi mawonekedwe omwewo, ndipo ma lithiamu ([Li]/[Li+Nb]) ali pafupifupi 48.6%. Kusapezeka kwa ma lithiamu ion mu LN crystal kumabweretsa zovuta zambiri za lattice, zomwe zimakhala ndi zotsatira ziwiri zofunika: Choyamba, zimakhudza katundu wa LN crystal; Chachiwiri, zolakwika za lattice zimapereka maziko ofunikira aukadaulo waukadaulo wa LN crystal, womwe ungathe kuwongolera bwino magwiridwe antchito a kristalo kudzera pakuwongolera magawo a kristalo, kuwongolera ndi kuwongolera kwa valence kwa zinthu zomwe zili ndi doped, chomwe ndi chimodzi mwazifukwa zofunika kuziganizira. Chithunzi cha LN.

Osiyana ndi wamba LN crystal, pali pafupi ndi stoichiometric LN crystal” yomwe [Li]/[Nb] ili pafupi 1. Zambiri zazithunzi zazithunzi za pafupi ndi makristalo a stoichiometric LN ndizodziwika kwambiri kuposa makristalo wamba a LN, ndipo zimakhala zovuta kwambiri kuzinthu zambiri zazithunzi chifukwa cha pafupi-stoichiometric doping, kotero iwo anaphunzira kwambiri. Komabe, popeza pafupi-stoichiometric LN crystal si eutectic ndi zigawo zolimba ndi zamadzimadzi, n'zovuta kukonzekera kristalo wapamwamba kwambiri ndi Czochralski wamba. njira. Chifukwa chake pali ntchito zambiri zoti zichitike pokonzekera makristalo apamwamba kwambiri komanso otsika mtengo pafupi ndi stoichiometric LN kuti agwiritse ntchito.


Nthawi yotumiza: Dec-27-2021