PMN-PT ka lepo
wehewehe
ʻIke ʻia ke aniani PMN-PT no kāna coefficient hoʻohui electromechanical kiʻekiʻe, piezoelectric coefficient kiʻekiʻe, kiʻekiʻe kiʻekiʻe a me ka haʻahaʻa dielectric nalowale.
Waiwai
| Hoʻohui Kimia | ( PbMg 0.33 Nb 0.67)1-x: (PbTiO3)x |
| Hoʻolālā | R3m, Rhombohedral |
| Lattice | a0 ~ 4.024Å |
| Lae hehee (℃) | 1280 |
| ʻO ka mānoanoa (g/cm3) | 8.1 |
| Piezoelectric Coefficient d33 | >2000 pC/N |
| Nalo Dielectric | paʻa<0.9 |
| Huina | kokoke i ka palena o ka pae morphotropic |
ʻO ka wehewehe ʻana o ka substrate PMN-PT
ʻO ka substrate PMN-PT e pili ana i kahi kiʻiʻoniʻoni lahilahi a i ʻole wafer i hana ʻia me ka mea piezoelectric PMN-PT.Hoʻohana ia ma ke ʻano he kumu kākoʻo a i ʻole ke kumu no nā mea uila a i ʻole optoelectronic.
I loko o ka pōʻaiapili o PMN-PT, ʻo ka substrate he ʻili paʻa palahalaha kahi e ulu ai a waiho ʻia paha nā ʻāpana lahilahi.Hoʻohana maʻamau ʻia nā substrate PMN-PT e hana i nā mea like me nā sensor piezoelectric, actuators, transducers, a me nā mea ʻohi ikehu.
Hāʻawi kēia mau substrates i kahi kahua paʻa no ka ulu ʻana a i ʻole ka waiho ʻana o nā papa a i ʻole nā hanana, e ʻae ana i nā waiwai piezoelectric o PMN-PT e hoʻohui ʻia i nā mea hana.Hiki i ke ʻano kiʻiʻoniʻoni lahilahi a i ʻole ka wafer o nā substrate PMN-PT ke hana i nā mea hana paʻa a maikaʻi hoʻi e pōmaikaʻi ai i nā waiwai piezoelectric maikaʻi loa.
Nā Huahana Pili
ʻO ka hoʻolike ʻana o ka lattice kiʻekiʻe e pili ana i ka alignment a i ʻole ka hoʻohālikelike ʻana i nā hale lattice ma waena o ʻelua mau mea like ʻole.I loko o ka pōʻaiapili o MCT (mercury cadmium telluride) semiconductors, makemake ʻia ka hoʻohālikelike ʻana i ka lattice kiʻekiʻe no ka mea hiki ke ulu i nā papa epitaxial kiʻekiʻe, kīnā ʻole.
ʻO MCT kahi mea semiconductor pūhui i hoʻohana mau ʻia i nā mea ʻike infrared a me nā mea hana kiʻi.No ka hoʻonui ʻana i ka hana ʻana o ka hāmeʻa, pono ia e ulu i nā papa epitaxial MCT e pili pono ana i ke ʻano lattice o ka mea substrate lalo (maʻamau CdZnTe a i ʻole GaAs).
Ma ka loaʻa ʻana o ka lattice hoʻohālikelike kiʻekiʻe, ua hoʻomaikaʻi ʻia ka alignment kristal ma waena o nā papa, a ua hoʻemi ʻia nā hemahema a me ke koʻikoʻi ma ka interface.Ke alakaʻi nei kēia i ka maikaʻi crystalline maikaʻi, hoʻomaikaʻi i ka uila a me nā waiwai optical, a me ka hoʻomaikaʻi ʻana i ka hana hāmeʻa.
He mea nui ka hoʻohālikelike ʻana i ka lattice kiʻekiʻe no nā noi e like me ke kiʻi infrared a me ka ʻike ʻana, kahi e hiki ai i nā hemahema liʻiliʻi a i ʻole nā hemahema ke hoʻohaʻahaʻa i ka hana o ka mīkini, e pili ana i nā mea e like me ka sensitivity, spatial resolution, and signal-to-noise ratio.
