{"id":53384,"date":"2019-11-30T00:00:00","date_gmt":"2019-11-29T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/uchenye-iz-mfti-sdelali-shag-k-poyavleniyu-novoj-fleshki"},"modified":"2020-02-18T14:01:17","modified_gmt":"2020-02-18T11:01:17","slug":"uchenye-iz-mfti-sdelali-shag-k-poyavleniyu-novoj-fleshki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/uchenye-iz-mfti-sdelali-shag-k-poyavleniyu-novoj-fleshki","title":{"rendered":"Cercet\u0103torii de la MFTI au f\u0103cut un pas spre o nou\u0103 \u201eunitate flash\u201d","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Crearea \u0219i dezvoltarea dispozitivelor pentru stocarea digital\u0103 a datelor f\u0103r\u0103 surs\u0103 de energie a avut loc de-a lungul multor decenii. O adev\u0103rat\u0103 revolu\u021bie a avut loc acum aproape 20 de ani cu memoria de tip NAND, de\u0219i dezvoltarea acesteia a \u00eenceput cu aproximativ 20 de ani mai devreme. Ast\u0103zi, la aproximativ jum\u0103tate de secol de la \u00eenceputul cercet\u0103rilor extinse, a produc\u021biei \u0219i a eforturilor constante de perfec\u021bionare a NAND, acest tip de memorie se apropie de limitarea posibilit\u0103\u021bilor sale de dezvoltare. Este necesar s\u0103 se pun\u0103 baza pentru o tranzi\u021bie la un alt tip de celul\u0103 de memorie cu caracteristici energetice, de vitez\u0103 \u0219i alte caracteristici mai bune. Pe termen lung, o astfel de memorie ar putea fi memoria segnetolectric\u0103 de nou tip.<\/p>\n<p><img decoding=\"async\" alt=\"Cercet\u0103torii de la MFTI au f\u0103cut un pas spre o nou\u0103 \u201eunitate flash\u201d\" src=\"\/wp-content\/uploads\/2019\/11\/decafd3e34f3cbc8fbea7600e3953312.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Segnetolectricii (\u00een literatura str\u0103in\u0103 se folose\u0219te termenul ferroelectrici) sunt dielectrice care au memorie asupra c\u00e2mpului electric aplicat sau, altfel spus, se caracterizeaz\u0103 prin polarizarea rezidual\u0103 a sarcinilor. Memoria pe segnetoelectrici nu este ceva nou. Problema a fost de a reduce dimensiunile celulelor segnetoelectrice la nivel nanometric.<\/p>\n<p>Acum trei ani, cercet\u0103torii de la MFTI <noindex><a rel=\"nofollow noopener noreferrer\" href=\"https:\/\/3dnews.ru\/931429\" target=\"_blank\">au prezentat<\/a><\/noindex> tehnologia de fabricare a materialului sub\u021bire pentru memoria segnetoelectric\u0103 pe baz\u0103 de oxid de hafniu (HfO2). Acesta nu este un material unic. Acest dielectric a fost utilizat timp de mai multe decenii pentru fabricarea tranzistorilor cu por\u021bi metalice \u00een procesoare \u0219i \u00een alte logici digitale. Pe baza filmelor policristaline de aliaje de oxizi de hafniu \u0219i zirconiu propuse de MFTI cu o grosime de 2,5 nm, s-au reu\u0219it crearea de tranzi\u021bii cu propriet\u0103\u021bi segnetoelectrice.<\/p>\n<p><center><\/center><\/p>\n<p>Pentru ca condensatorii segnetoelectrice (a\u0219a cum au \u00eenceput s\u0103-i numeasc\u0103 \u00een MFTI) s\u0103 poat\u0103 fi utiliza\u021bi ca celule de memorie, este necesar s\u0103 se ating\u0103 o polarizare maxim\u0103 posibil\u0103, pentru care este necesar\u0103 o studiere detaliat\u0103 a proceselor fizice \u00een stratul nanometric. \u00cen special, este necesar s\u0103 se ob\u021bin\u0103 o \u00een\u021belegere a distribu\u021biei poten\u021bialului electric \u00een interiorul stratului atunci c\u00e2nd se aplic\u0103 tensiune. P\u00e2n\u0103 de cur\u00e2nd, cercet\u0103torii puteau conta doar pe aparatul matematic pentru a descrie fenomenul, iar abia acum a fost realizat\u0103 o metod\u0103 prin care s-a reu\u0219it practic s\u0103 se priveasc\u0103 \u00een interiorul materialului \u00een timpul fenomenului.<\/p>\n<p><img decoding=\"async\" alt=\"Cercet\u0103torii de la MFTI au f\u0103cut un pas spre o nou\u0103 \u201eunitate flash\u201d\" src=\"\/wp-content\/uploads\/2019\/11\/4ed4dcfea256213964ca7e9c4978563e.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Metodologia propus\u0103, care se bazeaz\u0103 pe spectroscopie fotoelectric\u0103 cu raze X de \u00eenalt\u0103 energie, a putut fi realizat\u0103 doar pe un echipament special (acceleratoare de sincrotron). Un astfel de echipament se afl\u0103 \u00een Hamburg (Germania). Toate experimentele cu \u201econdensatorii piezoelectrici\u201d realiza\u021bi la MFTI pe baz\u0103 de oxid de hafniu s-au desf\u0103\u0219urat \u00een Germania. Articolul referitor la activitatea desf\u0103\u0219urat\u0103 a fost publicat \u00een <noindex><a rel=\"nofollow noopener noreferrer\" href=\"https:\/\/pubs.rsc.org\/en\/content\/articlelanding\/2019\/NR\/C9NR05904K#!divAbstract\" target=\"_blank\">Nano\u0219iruri<\/a><\/noindex>.<\/p>\n<p>\u201eCondensatorii ferroelectrici crea\u021bi \u00een laboratorul nostru, dac\u0103 sunt utiliza\u021bi pentru produc\u021bia industrial\u0103 de celule de memorie nevolatil\u0103, pot asigura 10^10 cicluri de scriere \u2014 de o sut\u0103 de mii de ori mai mult dec\u00e2t permit actualele unit\u0103\u021bi flash de calculator,\u201d afirm\u0103 Andrei Zenkievici, unul dintre autorii lucr\u0103rii \u0219i conduc\u0103torul laboratorului de materiale \u0219i dispozitive func\u021bionale pentru nanoelectronic\u0103 de la MFTI. Astfel, s-a f\u0103cut un alt pas spre noua memorie, de\u0219i mai trebuie s\u0103 facem \u00eenc\u0103 foarte, foarte multe astfel de pa\u0219i.<\/p>\n<p><center><\/p>\n<p><\/center><\/p>\n<p>\t\t\t\t<center><br \/>\n\t\t\t\t\t\t\t\t<\/center><br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/3dnews.ru\/998626\">3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0434\u043b\u044f \u044d\u043d\u0435\u0440\u0433\u043e\u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0435\u0434\u0451\u0442\u0441\u044f \u043d\u0430 \u043f\u0440\u043e\u0442\u044f\u0436\u0435\u043d\u0438\u0438 \u043c\u043d\u043e\u0433\u0438\u0445 \u0434\u0435\u0441\u044f\u0442\u0438\u043b\u0435\u0442\u0438\u0439. \u041d\u0430\u0441\u0442\u043e\u044f\u0449\u0438\u0439 \u043f\u0440\u043e\u0440\u044b\u0432 \u0447\u0443\u0442\u044c \u043c\u0435\u043d\u044c\u0448\u0435 20 \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434 \u0441\u043e\u0432\u0435\u0440\u0448\u0438\u043b\u0430 \u043f\u0430\u043c\u044f\u0442\u044c \u0442\u0438\u043f\u0430 NAND, \u0445\u043e\u0442\u044f \u0435\u0451 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0441\u0442\u0430\u0440\u0442\u043e\u0432\u0430\u043b\u0430 \u0435\u0449\u0451 \u043b\u0435\u0442 \u043d\u0430 20 \u0440\u0430\u043d\u044c\u0448\u0435. \u0421\u0435\u0433\u043e\u0434\u043d\u044f, \u0441\u043f\u0443\u0441\u0442\u044f \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u043f\u043e\u043b\u0432\u0435\u043a\u0430 \u043f\u043e\u0441\u043b\u0435 \u043d\u0430\u0447\u0430\u043b\u0430 \u0448\u0438\u0440\u043e\u043a\u043e\u043c\u0430\u0441\u0448\u0442\u0430\u0431\u043d\u044b\u0445 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0439, \u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430 \u0438 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0445 \u0443\u0441\u0438\u043b\u0438\u0439 \u043f\u043e \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044e NAND, \u044d\u0442\u043e\u0442 \u0442\u0438\u043f \u043f\u0430\u043c\u044f\u0442\u0438 \u0431\u043b\u0438\u0437\u043e\u043a \u043a [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-53384","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0434\u043b\u044f \u044d\u043d\u0435\u0440\u0433\u043e\u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0435\u0434\u0451\u0442\u0441\u044f \u043d\u0430 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