Kev tsim thiab kev loj hlob ntawm cov cuab yeej siv rau kev khaws cia tsis hloov pauv ntawm cov ntaub ntawv digital tau mus rau ntau xyoo lawm. Qhov kev tawg tiag tiag tau ua tsawg dua 20 xyoo dhau los los ntawm NAND nco, txawm hais tias nws txoj kev loj hlob pib 20 xyoo dhau los. Niaj hnub no, kwv yees li ib nrab xyoo pua tom qab pib ntawm kev tshawb fawb loj, qhov pib ntawm kev tsim khoom thiab kev siv zog tas li los txhim kho NAND, hom kev nco no ze rau qhov ua rau nws txoj kev loj hlob muaj peev xwm. Nws yog ib qho tsim nyog los nteg lub hauv paus rau kev hloov mus rau lwm lub cim xeeb ntawm tes nrog lub zog zoo dua, ceev thiab lwm yam ntxwv. Nyob rau hauv lub sij hawm ntev, xws li ib tug nco yuav yog ib yam tshiab ntawm ferroelectric nco.
Ferroelectrics (lub sij hawm ferroelectrics yog siv nyob rau hauv txawv teb chaws cov ntaub ntawv) yog dielectrics uas muaj ib tug nco ntawm daim ntawv thov hluav taws xob teb los yog, nyob rau hauv lwm yam lus, yog yus muaj los ntawm residual polarization ntawm nqi. Ferroelectric nco tsis muaj dab tsi tshiab. Qhov kev sib tw yog kom ntsuas ferroelectric hlwb mus rau qib nanoscale.
Peb xyoos dhau los, cov kws tshawb fawb ntawm MIPT thev naus laus zis rau kev tsim cov ntaub ntawv nyias nyias rau ferroelectric nco raws li hafnium oxide (HfO2). Qhov no kuj tsis yog cov khoom tshwj xeeb. Qhov no dielectric tau siv rau ntau tsib xyoos ua ke los ua cov transistors nrog cov rooj vag hlau hauv cov txheej txheem thiab lwm cov logic digital. Raws li alloy polycrystalline films ntawm hafnium thiab zirconium oxides nrog ib tug tuab ntawm 2,5 nm npaj rau ntawm MIPT, nws muaj peev xwm tsim kev hloov nrog ferroelectric zog.
Txhawm rau kom ferroelectric capacitors (raws li lawv tau pib hu ua MIPT) siv los ua lub cim xeeb ntawm lub hlwb, nws yog ib qho tsim nyog yuav tsum ua kom tiav qhov siab tshaj plaws polarization, uas yuav tsum tau kawm kom ntxaws txog cov txheej txheem ntawm lub cev hauv nanolayer. Tshwj xeeb, tau txais ib lub tswv yim ntawm kev faib hluav taws xob muaj peev xwm hauv txheej thaum siv hluav taws xob. Txog thaum tsis ntev los no, cov kws tshawb fawb tsuas tuaj yeem tso siab rau cov cuab yeej ua lej los piav txog qhov tshwm sim, thiab tam sim no tsuas yog cov txheej txheem tau ua tiav nrog qhov uas nws muaj peev xwm cia saib hauv cov khoom siv thaum lub sijhawm ua haujlwm ntawm qhov tshwm sim.
Cov txheej txheem thov, uas yog ua raws li lub zog hluav taws xob X-ray photoelectron spectroscopy, tsuas yog siv tau rau ntawm kev teeb tsa tshwj xeeb (synchrotron accelerators). Qhov no yog nyob rau hauv Hamburg (Lub teb chaws Yelemees). Txhua qhov kev sim nrog hafnium oxide-based "ferroelectric capacitors" tsim los ntawm MIPT tau tshwm sim hauv Tebchaws Yelemees. Ib tsab xov xwm hais txog kev ua haujlwm tau muab luam tawm hauv .
"Ferroelectric capacitors tsim nyob rau hauv peb lub chaw soj nstuam, yog siv rau kev lag luam ntawm cov tsis-volatile nco hlwb, muaj peev xwm muab 1010 rewrite cycles - ib puas txhiab lub sij hawm ntau tshaj li niaj hnub computer flash drives tso cai," hais tias Andrei Zenkevich, ib tug ntawm cov sau phau ntawv. ua haujlwm, lub taub hau ntawm lub chaw soj nstuam ntawm cov khoom siv thiab cov khoom siv rau nanoelectronics MIPT. Yog li, lwm kauj ruam tau coj mus rau lub cim xeeb tshiab, txawm hais tias tseem muaj ntau, ntau cov kauj ruam yuav tsum tau ua.
Tau qhov twg los: 3d xov.ru