119 research outputs found

    Magnetically operated nanorelay based on two single-walled carbon nanotubes filled with endofullerenes Fe@C20

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    Structural and energy characteristics of the smallest magnetic endofullerene Fe@C20 have been calculated using the density functional theory approach. The ground state of Fe@C20 is found to be a septet state, and the magnetic moment of Fe@C20 is estimated to be 8 Bohr magnetons. Characteristics of an (8,8) carbon nanotube with a single Fe@C20 inside are studied in the framework of the semiempirical approach. The scheme of a magnetic nanorelay based on cantilevered nanotubes filled with magnetic endofullerenes is elaborated. The proposed nanorelay is turned on as a result of bending of nanotubes by a magnetic force. Operational characteristics of such a nanorelay based on (8,8) and (21,21) nanotubes fully filled with Fe@C20 are estimated and compared to the ones of a nanorelay made of a (21,21) nanotube fully filled with experimentally observed (Ho3N)@C80 with the magnetic moment of 21 Bohr magnetons. Room temperature operation of (21,21) nanotube based nanorelays is shown.Comment: 18 pages, 9 figure

    ΠœΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π΅ΡΠΊΠΎΠ΅ ΠΈ ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΠ»ΡƒΠΏΡ€ΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²Ρ‹Ρ… систСм Ρ€Π°Π·Π»ΠΈΡ‡Π½ΠΎΠΉ размСрности ΠΈ элСмСнтов ΠΏΡ€ΠΈΠ±ΠΎΡ€Π½Ρ‹Ρ… структур Π½Π° ΠΈΡ… основС

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    The article, in the form of a minireview, reflects the results of theoretical, and partly experimental investigations of the electrical, optical and magnetic phenomena in three-dimensional, two-dimensional, one-dimensional and zero-dimensional systems and elements of device structures made of germanium, silicon, carbon and other chemical elements carried out at the Faculty of Physics of Belarusian State University over the past 25 years.Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ (Π² Ρ„ΠΎΡ€ΠΌΠ΅ ΠΌΠΈΠ½ΠΈ-ΠΎΠ±Π·ΠΎΡ€Π°) ΠΎΡ‚Ρ€Π°ΠΆΠ΅Π½Ρ‹ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹Ρ… Π½Π° физичСском Ρ„Π°ΠΊΡƒΠ»ΡŒΡ‚Π΅Ρ‚Π΅ БСлорусского государствСнного унивСрситСта Π·Π° послСдниС 25 Π»Π΅Ρ‚ тСорСтичСских (ΠΈ отчасти ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ…) исслСдований элСктричСских, оптичСских ΠΈ ΠΌΠ°Π³Π½ΠΈΡ‚Π½Ρ‹Ρ… явлСний Π² Ρ‚Ρ€Π΅Ρ…ΠΌΠ΅Ρ€Π½Ρ‹Ρ…, Π΄Π²ΡƒΠΌΠ΅Ρ€Π½Ρ‹Ρ…, ΠΎΠ΄Π½ΠΎΠΌΠ΅Ρ€Π½Ρ‹Ρ… ΠΈ Π½ΡƒΠ»ΡŒΠΌΠ΅Ρ€Π½Ρ‹Ρ… систСмах ΠΈ элСмСнтах ΠΏΡ€ΠΈΠ±ΠΎΡ€Π½Ρ‹Ρ… структур ΠΈΠ· гСрмания, крСмния, ΡƒΠ³Π»Π΅Ρ€ΠΎΠ΄Π° ΠΈ Π΄Ρ€ΡƒΠ³ΠΈΡ… химичСских элСмСнтов
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