Masana kimiyya sun sami Magnetic Nanopowder na 6G Fasaha
Newswise - Masana kimiyyar kayan aiki sun haɓaka hanya mai sauri don samar da epsilon iron oxide kuma sun nuna alkawarinsa na na'urorin sadarwa na gaba. Fitattun halayen maganadisu sun sa ya zama ɗaya daga cikin abubuwan da ake so, kamar na na'urorin sadarwa na 6G mai zuwa da kuma rikodin maganadisu mai ɗorewa. An buga aikin a cikin Journal of Materials Chemistry C, mujallar Royal Society of Chemistry. Iron oxide (III) yana daya daga cikin oxides mafi yaduwa a duniya. Ana samun mafi yawa azaman hematite ma'adinai (ko alpha iron oxide, α-Fe2O3). Wani tsayayye kuma gama gari shine maghemite (ko gyaran gamma, γ-Fe2O3). Tsohon ana amfani dashi sosai a masana'antu azaman launin ja, kuma na ƙarshe azaman matsakaicin rikodin maganadisu. Sauye-sauyen guda biyu sun bambanta ba kawai a cikin tsarin crystalline ba (alpha-iron oxide yana da hexagonal syngony da gamma-iron oxide yana da cubic syngony) amma kuma a cikin kayan magnetic. Baya ga waɗannan nau'ikan baƙin ƙarfe oxide (III), akwai ƙarin gyare-gyare masu ban mamaki kamar epsilon-, beta-, zeta-, har ma da gilashi. Mafi kyawun lokaci shine epsilon iron oxide, ε-Fe2O3. Wannan gyare-gyare yana da babban ƙarfin tilastawa (ikon kayan don tsayayya da filin maganadisu na waje). Ƙarfin ya kai 20 kOe a dakin da zafin jiki, wanda yayi daidai da ma'auni na maganadisu dangane da abubuwa masu tsada masu tsada. Bugu da ƙari kuma, abu yana ɗaukar radiation na lantarki a cikin kewayon mitar sub-terahertz (100-300 GHz) ta hanyar tasirin ferromagnetic resonance na halitta. Yawan irin wannan resonance yana ɗaya daga cikin ma'auni don amfani da kayan a cikin na'urorin sadarwa mara waya - 4G daidaitaccen yana amfani da megahertz kuma 5G yana amfani da dubun gigahertz. Akwai shirye-shiryen yin amfani da kewayon sub-terahertz azaman kewayon aiki a cikin fasahar mara waya ta ƙarni na shida (6G), wanda aka shirya don gabatarwa mai aiki a rayuwarmu daga farkon 2030s. Abubuwan da aka samo sun dace don samar da juzu'i na jujjuyawar raka'a ko da'irori mai ɗaukar hoto a waɗannan mitoci. Misali, ta hanyar yin amfani da nanopowders na ε-Fe2O3 mai haɗawa zai yiwu a yi fenti waɗanda ke ɗaukar igiyoyin lantarki don haka garkuwa da ɗakuna daga siginar da ba ta dace ba, da kuma kare sigina daga kutsawa daga waje. Hakanan ana iya amfani da ε-Fe2O3 kanta a cikin na'urorin liyafar 6G. Epsilon iron oxide wani nau'i ne mai wuyar gaske kuma mai wuyar samu na ƙarfe oxide. A yau, ana samar da shi a cikin ƙananan yawa, tare da tsarin da kansa ya ɗauki tsawon wata guda. Wannan, ba shakka, yana kawar da aikace-aikacensa da yawa. Marubutan binciken sun ɓullo da wata hanya don haɓaka haɓakar ƙarfe na ƙarfe na epsilon wanda zai iya rage lokacin haɗawa zuwa rana ɗaya (wato, don aiwatar da cikakken zagayowar fiye da sau 30 cikin sauri!) . Dabarar tana da sauƙi don haifuwa, mai arha kuma ana iya aiwatar da shi cikin sauƙi a cikin masana'antu, kuma kayan da ake buƙata don haɗakarwa - ƙarfe da silicon - suna cikin abubuwan da suka fi yawa a duniya. "Ko da yake an samu lokacin epsilon-iron oxide a cikin tsaftataccen tsari tun da dadewa, a cikin 2004, har yanzu ba a sami aikace-aikacen masana'antu ba saboda sarkar da ke tattare da shi, misali a matsayin matsakaici don maganadisu - rikodi. Mun yi nasarar sauƙaƙe fasahar sosai,” in ji Evgeny Gorbachev, ɗalibin PhD a Sashen Kimiyyar Kayayyaki a Jami’ar Jihar Moscow kuma marubucin farko na aikin. Makullin samun nasarar aikace-aikacen kayan aiki tare da halayen rikodin rikodin shine bincike a cikin mahimman kayan aikinsu na zahiri. Ba tare da zurfin nazari ba, ana iya mantawa da abin da bai cancanta ba shekaru da yawa, kamar yadda ya faru fiye da sau ɗaya a tarihin kimiyya. Masana kimiyyar kayan aiki a Jami'ar Jihar Moscow ne suka hada da mahallin, da kuma masana kimiyya a MIPT, wadanda suka yi nazari dalla-dalla, wanda ya sa ci gaban ya yi nasara.
Lokacin aikawa: Jul-04-2022 