Lithium niobate crystal yakanakisa piezoelectric zvinhu inezvinotevera properties:yakakwirira Curie tembiricha, yakaderera tembiricha coefficient ye piezoelectric effect, yakakwira electromechanical coupling coefficient, yakaderera dielectric kurasikirwa, yakagadzikana yemuviri nemakemikari zvivakwa, yakanaka kugadzirisa kuita, uye nyore kugadzirira hukuru hukuru uye yemhando yepamusoro kristaro.Kuenzaniswa neanowanzo shandiswa piezoelectric crystal quartz,LNkristaroane yakakwiriraruzha velocitynokutikugadzirira kwepamusoro-soro zvikamu, saka zvinogona kushandiswakugadziraresonator, transducer, mutsara wekunonoka, sefa, nezvimwe.. ayo ane mukurumbira wakanyanya kushandiswa munzvimbo dzevagari vemonharembozha, kutaurirana setiraiti, dhijitari masaini kugadzirisa, TV, redhiyo, radar, kure kure sensing,uye nzvimbo dzemauto dzemagetsicountermeasures, fuze, kutungamira,etc..

Iyo yakawanda kwazvokushandiswa kweLN crystalndiyo yepamusoro acoustic wave sefa (SAWF).Kubva kuma1970,Midfrequency SAWF yakagadzirwa kubva kuLNcrystal yakashandiswa zvakanyanya muruvara rweTV seti, nhare dzisina tambo, zvemagetsi zvidzore kure, zvichingodaro. Muna 2010, nekushandiswa kwesilicon tuner integrated chips, IF mafirita epamusoro-soro mumaseti eTV akaburitswa kubva kumusika.Skubva kuma1980, kutaurirana kwenhare kwachinja kubva ku2G kuenda ku5G, uye nharembozha inofanirwa kunge iri kumashure kuenderana,izvi zvakaunza akuwedzera mukudiwa kweSAWF. Kana each frequency band inodasmasefa maviri, foni imwe neimwekudavanoda zvinopfuura zanaSAWF. Most yese SAWF inogadzirwa kubva kuLN orlithium tantalite makristasi. LN crystal inonyanya kufarirwa mumidziyo yeSAWF pamwetembiricha muripodhizaini (TCSAW).

Ye piezoelectric application, kuumbwa kweLNcrystal ine pesvedzero huru pakumhanya kweruzha, uye shanduko yayo yemhando inoda kunyatsodzorwa. Because tembiricha yeCurie inonzwa zvakanyanya kune kuumbwa kwekristaro, sakaitinowanzoshandiswa kuratidza kuenderana kwekuumbwa kwekristaro.Mukuwedzera, iyo imwechete domain yekristaro ichabata zvakanangazvayopiezoelectric zvinhu.Tsaka,kiyitechnical yakatarwa yeLN makristasi anoshandiswa mupiezoelectric zvishandiso zvinosanganisiraetembiricha yeCurie,monopole domains,uye zvidimbu zvekuparadzira mukati,etc.. Mukristaro, avomechanical waves ine wavelength yakareba hainzwisisikethe lattice kuremarazviri muchiyeroidiki kwazvo pane kureba kwewavelength. Iwo makristasi eLN anosangana nezvinodiwa zvepiezoelectricapplication variinonzi "acousticgiredhi LNkristaro”.

Iyo yekucheka nzira yeacoustic giredhiLNcrystal inobatana nezvayochaiyo application.Iyo Y-axis yekuchekaLNcrystal ine yakakwira electromechanical coupling coefficient, asiane zvishomaapplication nekuda kwekunyanya kunakidzwa kweanogamuchira wave.Iyo <1014> yekucheka kristaro ine mashoma muviri wave excitation uye inonyanya kushandiswa(TCSAW mumwe wemienzaniso). Mukutarisa kwe<1014>, Y-axisinotendereracounterclockwise 127.86° around the X-axis.Aya makristasi eLN ndiwoinowanzonzi 128°YLNkristaro.Pamusoro pe,LNkristaros nekucheka kona64°Y uye 41°Yvariyakanyanya kukodzera kugadzirira yakakwira frequency zvigadzirwa.Parizvino,saizi yepiezoelectricLN kristaroyasvika 6 inches.

Mukuwedzera, Lewis akashuma simba re pyroelectric effect yeLNcrystal pakugadzirira kwepamusoro acoustic wave zvishandiso muna 1982, uye yakawana kuti pyroelectric effect ye.LNcrystal inotungamirira kuparadzwa kwe electrode uye crystal, iyo inogona kudzvinyirirwa kuburikidza nekushandisa nzira yekupikisa yakakwirira yesimbi short-circuit electrode.Muna 1998, Standifer et al.akagamuchira nzira yemakemikari kuderedza kurapwa kuwedzera chiedza kutorwa kweLNkristaro ne1000 nguva, kuvandudza kuratidzwa kwemhando yakamanikana uye yakatsetseka mitsara panguva yephotolithography, uye kuwedzera kristaro'sconductivity nevanopfuura1×10⁵ nguva.Iyi nziradzoraskukanganisa kwemuchinjikwa munwe electrodesinokonzerwa nepyroelectric effect muhutano hwekupisa hwekupisathepamusoro acoustic wave zvishandiso.TheLNchimedu chinogadzirwa nenzira iyi chinonzi "dema LN”izvoyakashandiswa zvakanyanya muSAWF.

Yepamusoro mhando LN makristasi anogadzirwa mumba yeWISOPTIC (www.wiseptic.com)