Ƙirƙirar da haɓaka na'urori don adana bayanan dijital ba tare da canzawa ba yana gudana shekaru da yawa. An sami ci gaba na gaske a ƙasa da shekaru 20 da suka gabata ta hanyar ƙwaƙwalwar NAND, kodayake ci gabanta ya fara shekaru 20 a baya. A yau, kimanin rabin karni bayan fara bincike mai zurfi, fara samarwa da kuma ƙoƙari na yau da kullum don inganta NAND, irin wannan ƙwaƙwalwar ajiya yana kusa da gajiyar haɓakar ci gaba. Wajibi ne a kafa harsashi don canzawa zuwa wani ƙwayar ƙwaƙwalwar ajiya tare da mafi kyawun makamashi, gudu da sauran halaye. A cikin dogon lokaci, irin wannan ƙwaƙwalwar ajiya na iya zama sabon nau'in ƙwaƙwalwar ferroelectric.
Ferroelectrics (kalmar ferroelectrics ana amfani dashi a cikin adabi na kasashen waje) dielectrics ne waɗanda ke da ƙwaƙwalwar filin lantarki da ake amfani da su ko, a wasu kalmomi, ana siffanta su da ragowar polarization na caji. Ƙwaƙwalwar Ferroelectric ba sabon abu ba ne. Kalubalen shine a daidaita sel ferroelectric zuwa matakin nanoscale.
Shekaru uku da suka wuce, masana kimiyya a MIPT fasaha don kera kayan fim na bakin ciki don ƙwaƙwalwar ferroelectric dangane da hafnium oxide (HfO2). Wannan kuma ba abu ne na musamman ba. An yi amfani da wannan dielectric shekaru biyar a jere don yin transistor tare da ƙofofin ƙarfe a cikin masu sarrafawa da sauran dabaru na dijital. Dangane da fina-finai na polycrystalline alloy na hafnium da zirconium oxides tare da kauri na 2,5 nm da aka ba da shawarar a MIPT, yana yiwuwa a haifar da canje-canje tare da kaddarorin ferroelectric.
Domin ferroelectric capacitors (kamar yadda aka fara kiran su a MIPT) don amfani da su azaman sel ƙwaƙwalwar ajiya, yana da mahimmanci don cimma mafi girman yiwuwar polarization, wanda ke buƙatar cikakken nazarin hanyoyin jiki a cikin nanolayer. Musamman ma, sami ra'ayi na rarraba ƙarfin lantarki a cikin Layer lokacin da ake amfani da wutar lantarki. Har zuwa kwanan nan, masana kimiyya sun iya dogara da na'urar lissafi kawai don bayyana abin da ya faru, kuma a yanzu an aiwatar da wata dabarar da za ta yiwu a zahiri duba cikin kayan yayin aiwatar da lamarin.
Dabarar da aka ba da shawarar, wanda ya dogara da babban ƙarfin X-ray photoelectron spectroscopy, za a iya aiwatar da shi kawai akan shigarwa na musamman (synchrotron accelerators). Wannan yana cikin Hamburg (Jamus). Dukkan gwaje-gwajen da aka yi tare da tushen hafnium oxide “ferroelectric capacitors” da aka ƙera a MIPT ya faru a Jamus. An buga labarin game da aikin da aka yi a ciki .
"The ferroelectric capacitors halitta a cikin dakin gwaje-gwaje, idan aka yi amfani da masana'antu samar da wadanda ba maras tabbas memory Kwayoyin, suna iya samar da 1010 sake rubuta sake zagayowar - da ɗari sau dubu fiye da zamani kwamfuta flash tafiyarwa damar," ya ce Andrei Zenkevich, daya daga cikin. marubutan aikin, shugaban dakin gwaje-gwaje na kayan aiki da na'urori don nanoelectronics MIPT. Don haka, an ɗauki wani mataki zuwa sabon ƙwaƙwalwar ajiya, kodayake akwai sauran matakai da yawa da za a ɗauka.
source: 3dnews.ru