BaTiO3 substrate
Kev piav qhia
BaTiO3ib leeg muaju muaj cov khoom zoo heev photorefractive, muaj kev cuam tshuam siab ntawm tus kheej-pwm theem conjugation thiab ob-yoj sib xyaw (optical zoom) kev ua haujlwm hauv cov ntaub ntawv kho qhov muag nrog cov ntaub ntawv loj loj, uas tseem yog cov ntaub ntawv tseem ceeb substrate.
Cov khoom
| Crystal Structure | Tetragonal (4m): 9 ℃ T < 130.5 ℃ib = 3.99A, c = 4.04A, |
| Txoj Kev Loj Hlob | Sab saum toj Seeded Solution Loj hlob |
| Melting Point (℃) | 1600 |
| Qhov ceev (g / cm3) | 6.02 ib |
| Dielectric Constants | ea = 3700, ec = 135 (unclamped)ea = 2400, e c = 60 (clamped) |
| Index ntawm Refraction | 515 nm 633 nm 800 nmtsis muaj 2.4921 2.4160 2.3681ne 2.4247 2.3630 2.3235 |
| Kev xa tawm wavelength | 0.45 ~ 6.30 hli |
| Electro Optic Coefficients | rT13 = 11.7 ?1.9 pm/V rT 33 = 112 ?10 pm/VrT 42 = 1920 ?180 pm/V |
| Reflectivity ntawm SPPC(ntawm 0 deg. txiav) | 50-70% (max. 77%) rau l = 515 nm50 - 80% (max: 86.8%) rau l = 633 nm |
| Ob-wave Mixing Coupling tas li | 10-40 cm 1 |
| Absorption Poob | l: 515 nm 633 nm 800 nmib: 3.392cm-1 0.268cm-1 0.005cm-1 |
BaTiO3 Substrate txhais
BaTiO3 substrate yog hais txog crystalline substrate ua los ntawm cov compound barium titanate (BaTiO3).BaTiO3 yog cov khoom siv ferroelectric nrog perovskite siv lead ua qauv, uas txhais tau hais tias nws muaj cov khoom siv hluav taws xob tshwj xeeb, ua rau nws zoo tagnrho rau ntau yam kev siv.
BaTiO3 substrates feem ntau yog siv nyob rau hauv lub tshav pob ntawm nyias zaj duab xis deposition, thiab tshwj xeeb tshaj yog siv los loj hlob epitaxial nyias films ntawm txawv cov ntaub ntawv.Cov qauv crystalline ntawm lub substrate tso cai rau kev npaj ntawm atoms, ua kom muaj kev loj hlob ntawm cov yeeb yaj kiab zoo tshaj plaws nrog cov khoom siv crystallographic zoo.Cov khoom ferroelectric ntawm BaTiO3 kuj ua lub luag haujlwm tseem ceeb hauv kev siv xws li hluav taws xob thiab cov khoom siv nco.Nws nthuav tawm tus kheej polarization thiab muaj peev xwm hloov pauv ntawm lub xeev polarization sib txawv raws li kev cuam tshuam ntawm sab nraud.
Cov cuab yeej no yog siv nyob rau hauv technologies xws li tsis-volatile nco (ferroelectric nco) thiab electro-optical li.Tsis tas li ntawd, BaTiO3 substrates muaj kev siv ntau yam xws li piezoelectric li, sensors, actuators, thiab microwave Cheebtsam.Qhov tshwj xeeb hluav taws xob thiab cov khoom siv kho tshuab ntawm BaTiO3 pab txhawb rau nws txoj haujlwm, ua rau nws tsim nyog rau cov ntawv thov no.
