BaTiO3 substrate
wehewehe
BaTiO3ʻO nā kristal hoʻokahi he mau waiwai photorefractive maikaʻi loa, ʻike kiʻekiʻe o ka hoʻohui ʻana i ka ʻaoʻao iho-pumped a me ka hui ʻana o nā hawewe ʻelua (zoom optical) maikaʻi i ka mālama ʻana i ka ʻike optical me nā noi nui, ʻo ia hoʻi kahi mea substrate koʻikoʻi.
Waiwai
| Hoʻomoe Crystal | Tetragonal (4m): 9 ℃ < T < 130.5 ℃a=3.99A, c= 4.04A , |
| ʻAno ulu | Hoʻoulu ʻana i nā mea kanu ma luna |
| Lae hehee (℃) | 1600 |
| ʻO ka mānoanoa（g/cm3） | 6.02 |
| Nā Kūlana Dielectric | ea = 3700, ec = 135 (ʻaʻole i hoʻopaʻa ʻia)ea = 2400, e c = 60 (pili ʻia) |
| Index of Refraction | 515 nm 633 nm 800 nmaole 2.4921 2.4160 2.3681ne 2.4247 2.3630 2.3235 |
| Ka lōʻihi o ka hawewe | 0.45 ~ 6.30 mm |
| Electro Optic Coefficients | rT13 = 11.7 ?1.9 pm/V rT 33 =112 ?10 pm/VrT 42= 1920 ?180 pm/V |
| Hōʻikeʻike o SPPC( ma ka 0 deg. oki ) | 50 - 70 % ( max. 77%) no l = 515 nm50 - 80 % ( max: 86.8%) no l = 633 nm |
| ʻElua hawewe hui ʻana hoʻohui mau | 10 -40 knm-1 |
| Nalo hoʻopio | l: 515 nm 633 nm 800 nma: 3.392cm-1 0.268cm-1 0.005cm-1 |
ʻO ka wehewehe ʻana o BaTiO3 substrate
ʻO ka pāpaʻi BaTiO3 e pili ana i kahi pani aniani i hana ʻia me ka hui barium titanate (BaTiO3).ʻO BaTiO3 kahi mea ferroelectric me ka perovskite crystal structure, ʻo ia hoʻi, loaʻa iā ia nā waiwai uila kūʻokoʻa, kūpono ia no nā ʻano noi.
Hoʻohana pinepine ʻia nā substrates BaTiO3 ma ke kahua o ka hoʻopaʻa ʻana i nā kiʻiʻoniʻoni lahilahi, a ua hoʻohana kūikawā ʻia e ulu i nā kiʻi ʻoniʻoni epitaxial o nā mea like ʻole.ʻO ke ʻano crystalline o ka substrate e hiki ai ke hoʻonohonoho pololei i nā atoms, e hiki ai i ka ulu ʻana o nā kiʻi ʻoniʻoni lahilahi kiʻekiʻe me nā waiwai crystallographic maikaʻi loa.ʻO nā waiwai ferroelectric o BaTiO3 ka mea koʻikoʻi i nā noi e like me nā uila a me nā mea hoʻomanaʻo.Hōʻike ia i ka polarization spontaneous a me ka hiki ke hoʻololi i waena o nā mokuʻāina polarization ʻē aʻe ma lalo o ka mana o kahi kahua waho.
Hoʻohana ʻia kēia waiwai i nā ʻenehana e like me ka hoʻomanaʻo non-volatile (ferroelectric memory) a me nā mea electro-optical.Eia kekahi, loaʻa i nā substrates BaTiO3 nā noi ma nā ʻano like ʻole e like me nā mea piezoelectric, sensors, actuators, a me nā ʻāpana microwave.Hāʻawi nā mea uila a me nā mechanical kūikawā o BaTiO3 i kāna hana, kūpono ia no kēia mau noi.
