LSAT Substrate
Kev piav qhia
(La, Sr) (Al, Ta) O 3 yog ib tug kuj paub tab uas tsis yog-crystalline perovskite siv lead ua, uas yog zoo matched nrog kub superconductors thiab ntau yam oxide ntaub ntawv.Nws cia siab tias lanthanum aluminate (LaAlO 3) thiab strontium titanate (SrO 3) yuav raug hloov pauv hauv cov hlau nplaum loj heev thiab cov khoom siv hluav taws xob ntau hauv ntau qhov kev siv tswv yim.
Cov khoom
| Txoj Kev Loj Hlob | CZ kev loj hlob |
| Crystal System | Kub |
| Crystallographic Lattice Constant | ib = 3,868 a |
| Qhov ceev (g / cm3) | 6.74 ib |
| Melting Point (℃) | 1840 |
| Hardness (Mho) | 6.5 |
| Thermal conductivity | 10 x 10-6K |
LaAlO3 Substrate txhais
LaAlO3 substrate yog hais txog cov khoom siv tshwj xeeb uas siv los ua cov substrate lossis hauv paus hauv kev tshawb fawb thiab thev naus laus zis rau kev loj hlob nyias zaj duab xis ntawm ntau yam khoom siv.Nws muaj cov qauv crystalline ntawm lanthanum aluminate (LaAlO3), uas feem ntau yog siv rau hauv daim teb ntawm nyias zaj duab xis deposition.
LaAlO3 substrates muaj cov khoom uas ua rau lawv txaus siab rau cov yeeb yaj kiab nyias nyias, xws li lawv cov crystalline zoo, zoo lattice tsis sib haum nrog ntau lwm cov ntaub ntawv, thiab muaj peev xwm muab qhov chaw tsim nyog rau kev loj hlob epitaxial.
Epitaxial yog cov txheej txheem ntawm kev loj hlob ib zaj duab xis nyias ntawm lub substrate nyob rau hauv uas cov atoms ntawm zaj duab xis ua ke nrog cov ntawm cov substrate los tsim ib tug heev txiav txim.
LaAlO3 substrates tau dav siv hauv kev lag luam xws li electronics, optoelectronics, thiab solid-state physics, qhov twg nyias zaj duab xis yog qhov tseem ceeb rau ntau yam khoom siv.Nws cov khoom tshwj xeeb thiab kev sib raug zoo nrog ntau cov ntaub ntawv sib txawv ua rau nws yog ib qho tseem ceeb substrate rau kev tshawb fawb thiab kev loj hlob hauv cov teb no.
High-temperature Superconductors Txhais
High-temperature superconductors (HTS) yog cov ntaub ntawv uas nthuav tawm superconductivity ntawm qhov kub thiab txias piv rau cov pa superconductors.Pa superconductors xav tau qhov kub tsis tshua muaj siab, feem ntau hauv qab -200 ° C (-328 ° F), kom pom tsis muaj hluav taws xob tsis kam.Hauv qhov sib piv, HTS cov ntaub ntawv tuaj yeem ua tiav superconductivity ntawm qhov kub thiab txias li -135 ° C (-211 ° F) thiab siab dua.
