9 research outputs found

    Micromagnetic Simulation of Magnetization Reversal Processes in Thin Obliquely Deposited Films

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    ВСкст ΡΡ‚Π°Ρ‚ΡŒΠΈ Π½Π΅ публикуСтся Π² ΠΎΡ‚ΠΊΡ€Ρ‹Ρ‚ΠΎΠΌ доступС Π² соотвСтствии с ΠΏΠΎΠ»ΠΈΡ‚ΠΈΠΊΠΎΠΉ ΠΆΡƒΡ€Π½Π°Π»Π°.The magnetization reversal processes in thin obliquely deposited films were studied by means of micro- magnetic modeling. Thin film structures for micromagnetic study were generated by Monte Carlo film growth simulator. Using obtained hysteresis loops for the generated films, we retrieved coercivity and remanent magnetization as a function of the deposition angle alpha. The results showed that for films with alpha<65 degr. the magnetization reversal occurred via coherent rotation of magnetic moments, whereas samples generated with larger deposition angles reverse their magnetization by the formation of complex quasi- domain magnetic structures

    Numerical Simulation of Magnetic Microstructure in Nanocrystalline Thin Films with the Random Anisotropy

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    The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easy axes was studied by means of micromagnetic modeling. The dependences of the correlation function parameters of the non-uniform magnetization on the value of the external in-plane magnetic field were investigated in the wide range (6–1000 nm) of particles sizes. An analysis of the obtained dependences revealed a significant difference between longitudinal (along the field) and transversal (perpendicular to the field) correlation radii of a stochastic magnetic structure. The blocking effect of a fine magnetic structureβ€”a magnetization rippleβ€”was observed during magnetization reversal of the films

    Micromagnetic Simulation of Magnetization Reversal Processes in Thin Obliquely Deposited Films

    No full text
    ВСкст ΡΡ‚Π°Ρ‚ΡŒΠΈ Π½Π΅ публикуСтся Π² ΠΎΡ‚ΠΊΡ€Ρ‹Ρ‚ΠΎΠΌ доступС Π² соотвСтствии с ΠΏΠΎΠ»ΠΈΡ‚ΠΈΠΊΠΎΠΉ ΠΆΡƒΡ€Π½Π°Π»Π°.The magnetization reversal processes in thin obliquely deposited films were studied by means of micro- magnetic modeling. Thin film structures for micromagnetic study were generated by Monte Carlo film growth simulator. Using obtained hysteresis loops for the generated films, we retrieved coercivity and remanent magnetization as a function of the deposition angle alpha. The results showed that for films with alpha<65 degr. the magnetization reversal occurred via coherent rotation of magnetic moments, whereas samples generated with larger deposition angles reverse their magnetization by the formation of complex quasi- domain magnetic structures

    Numerical Simulation of Magnetic Microstructure in Nanocrystalline Thin Films with the Random Anisotropy

    No full text
    The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easy axes was studied by means of micromagnetic modeling. The dependences of the correlation function parameters of the non-uniform magnetization on the value of the external in-plane magnetic field were investigated in the wide range (6–1000 nm) of particles sizes. An analysis of the obtained dependences revealed a significant difference between longitudinal (along the field) and transversal (perpendicular to the field) correlation radii of a stochastic magnetic structure. The blocking effect of a fine magnetic structureβ€”a magnetization rippleβ€”was observed during magnetization reversal of the films

    ΠœΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ процСссов пСрСмагничивания Π² Ρ‚ΠΎΠ½ΠΊΠΈΡ… наклонноосаТдСнных ΠΏΠ»Π΅Π½ΠΊΠ°Ρ…

    No full text
    The magnetization reversal processes in thin obliquely deposited films were studied by means of micro- magnetic modeling. Thin film structures for micromagnetic study were generated by Monte Carlo film growth simulator. Using obtained hysteresis loops for the generated films, we retrieved coercivity and remanent magnetization as a function of the deposition angle . The results showed that for films with < 65 β—¦ the magnetization reversal occurred via coherent rotation of magnetic moments, whereas samples generated with larger deposition angles reverse their magnetization by the formation of complex quasi- domain magnetic structures. The numerical results are in a good accordance with the previously reported experimental measurementsΠœΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ модСлирования исслСдованы процСссы пСрСмагничивания Π² Ρ‚ΠΎΠ½ΠΊΠΈΡ… Π½Π°ΠΊΠ»ΠΎΠ½Π½ΠΎ-осаТдСнных ΠΏΠ»Π΅Π½ΠΊΠ°Ρ…. Π’ΠΎΠ½ΠΊΠΎΠΏΠ»Π΅Π½ΠΎΡ‡Π½Ρ‹Π΅ структуры для ΠΌΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° Π±Ρ‹- Π»ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΡ‹ модСлирования роста ΠΏΠ»Π΅Π½ΠΎΠΊ, основанной Π½Π° ΠΌΠ΅Ρ‚ΠΎΠ΄Π΅ ΠœΠΎΠ½Ρ‚Π΅- ΠšΠ°Ρ€Π»ΠΎ. Из ΠΏΠ΅Ρ‚Π΅Π»ΡŒ гистСрСзиса, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… для сгСнСрированных ΠΏΠ»Π΅Π½ΠΎΠΊ, Π±Ρ‹Π»ΠΈ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ зависи- мости коэрцитивной силы ΠΈ остаточной намагничСнности ΠΎΡ‚ ΡƒΠ³Π»Π° осаТдСния . Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдований ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, Ρ‡Ρ‚ΠΎ для ΠΏΠ»Π΅Π½ΠΎΠΊ с < 65 β—¦ ΠΏΠ΅Ρ€Π΅ΠΌΠ°Π³Π½ΠΈΡ‡ΠΈΠ²Π°Π½ΠΈΠ΅ осущСствляСтся посрСдством ΠΊΠΎΠ³Π΅Ρ€Π΅Π½Ρ‚Π½ΠΎΠ³ΠΎ вращСния ΠΌΠ°Π³Π½ΠΈΡ‚Π½Ρ‹Ρ… ΠΌΠΎΠΌΠ΅Π½Ρ‚ΠΎΠ², Ρ‚ΠΎΠ³Π΄Π° ΠΊΠ°ΠΊ для ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΏΡ€ΠΈ Π±ΠΎΠ»ΡŒΡˆΠΈΡ… ΡƒΠ³Π»Π°Ρ… осаТдСния ΠΏΠ΅Ρ€Π΅ΠΌΠ°Π³Π½ΠΈΡ‡ΠΈΠ²Π°Π½ΠΈΠ΅ осущСствляСтся Ρ‡Π΅Ρ€Π΅Π· Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ слоТных ΠΊΠ²Π°Π·ΠΈΠ΄ΠΎΠΌΠ΅Π½- Π½Ρ‹Ρ… ΠΌΠ°Π³Π½ΠΈΡ‚Π½Ρ‹Ρ… структур. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ модСлирования Ρ…ΠΎΡ€ΠΎΡˆΠΎ ΡΠΎΠ³Π»Π°ΡΡƒΡŽΡ‚ΡΡ с Ρ€Π°Π½Π΅Π΅ ΠΎΠΏΡƒΠ±Π»ΠΈΠΊΠΎ- Π²Π°Π½Π½Ρ‹ΠΌΠΈ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… ΠΈΠ·ΠΌΠ΅Ρ€Π΅Π½ΠΈ

    ΠœΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ процСссов пСрСмагничивания Π² Ρ‚ΠΎΠ½ΠΊΠΈΡ… наклонноосаТдСнных ΠΏΠ»Π΅Π½ΠΊΠ°Ρ…

    No full text
    The magnetization reversal processes in thin obliquely deposited films were studied by means of micro- magnetic modeling. Thin film structures for micromagnetic study were generated by Monte Carlo film growth simulator. Using obtained hysteresis loops for the generated films, we retrieved coercivity and remanent magnetization as a function of the deposition angle . The results showed that for films with < 65 β—¦ the magnetization reversal occurred via coherent rotation of magnetic moments, whereas samples generated with larger deposition angles reverse their magnetization by the formation of complex quasi- domain magnetic structures. The numerical results are in a good accordance with the previously reported experimental measurementsΠœΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ модСлирования исслСдованы процСссы пСрСмагничивания Π² Ρ‚ΠΎΠ½ΠΊΠΈΡ… Π½Π°ΠΊΠ»ΠΎΠ½Π½ΠΎ-осаТдСнных ΠΏΠ»Π΅Π½ΠΊΠ°Ρ…. Π’ΠΎΠ½ΠΊΠΎΠΏΠ»Π΅Π½ΠΎΡ‡Π½Ρ‹Π΅ структуры для ΠΌΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° Π±Ρ‹- Π»ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΡ‹ модСлирования роста ΠΏΠ»Π΅Π½ΠΎΠΊ, основанной Π½Π° ΠΌΠ΅Ρ‚ΠΎΠ΄Π΅ ΠœΠΎΠ½Ρ‚Π΅- ΠšΠ°Ρ€Π»ΠΎ. Из ΠΏΠ΅Ρ‚Π΅Π»ΡŒ гистСрСзиса, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… для сгСнСрированных ΠΏΠ»Π΅Π½ΠΎΠΊ, Π±Ρ‹Π»ΠΈ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Ρ‹ зависи- мости коэрцитивной силы ΠΈ остаточной намагничСнности ΠΎΡ‚ ΡƒΠ³Π»Π° осаТдСния . Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдований ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, Ρ‡Ρ‚ΠΎ для ΠΏΠ»Π΅Π½ΠΎΠΊ с < 65 β—¦ ΠΏΠ΅Ρ€Π΅ΠΌΠ°Π³Π½ΠΈΡ‡ΠΈΠ²Π°Π½ΠΈΠ΅ осущСствляСтся посрСдством ΠΊΠΎΠ³Π΅Ρ€Π΅Π½Ρ‚Π½ΠΎΠ³ΠΎ вращСния ΠΌΠ°Π³Π½ΠΈΡ‚Π½Ρ‹Ρ… ΠΌΠΎΠΌΠ΅Π½Ρ‚ΠΎΠ², Ρ‚ΠΎΠ³Π΄Π° ΠΊΠ°ΠΊ для ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΏΡ€ΠΈ Π±ΠΎΠ»ΡŒΡˆΠΈΡ… ΡƒΠ³Π»Π°Ρ… осаТдСния ΠΏΠ΅Ρ€Π΅ΠΌΠ°Π³Π½ΠΈΡ‡ΠΈΠ²Π°Π½ΠΈΠ΅ осущСствляСтся Ρ‡Π΅Ρ€Π΅Π· Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ слоТных ΠΊΠ²Π°Π·ΠΈΠ΄ΠΎΠΌΠ΅Π½- Π½Ρ‹Ρ… ΠΌΠ°Π³Π½ΠΈΡ‚Π½Ρ‹Ρ… структур. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ модСлирования Ρ…ΠΎΡ€ΠΎΡˆΠΎ ΡΠΎΠ³Π»Π°ΡΡƒΡŽΡ‚ΡΡ с Ρ€Π°Π½Π΅Π΅ ΠΎΠΏΡƒΠ±Π»ΠΈΠΊΠΎ- Π²Π°Π½Π½Ρ‹ΠΌΠΈ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… ΠΈΠ·ΠΌΠ΅Ρ€Π΅Π½ΠΈ

    ЧислСнноС ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ микроструктуры нанокристалличСских Ρ‚ΠΎΠ½ΠΊΠΈΡ… ΠΏΠ»Π΅Π½ΠΎΠΊ со случайной Π°Π½ΠΈΠ·ΠΎΡ‚Ρ€ΠΎΠΏΠΈΠ΅ΠΉ

    No full text
    The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easy axes was studied by means of micromagnetic modeling. The dependences of the correlation function parameters of the non-uniform magnetization on the value of the external in-plane magnetic field were investigated in the wide range (6–1000 nm) of particles sizes. An analysis of the obtained dependences revealed a significant difference between longitudinal (along the field) and transversal (perpendicular to the field) correlation radii of a stochastic magnetic structure. The blocking effect of a fine magnetic structureβ€”a magnetization rippleβ€”was observed during magnetization reversal of the filmsΠœΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ модСлирования ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Ρ‹ исслСдования ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ структуры Ρ‚ΠΎΠ½- ΠΊΠΈΡ… нанокристалличСских ΠΏΠ»Π΅Π½ΠΎΠΊ со случайным распрСдСлСниСм осСй Π»Π΅Π³ΠΊΠΎΠ³ΠΎ намагничивания. Π’ ΡˆΠΈΡ€ΠΎΠΊΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ Ρ€Π°Π·ΠΌΠ΅Ρ€ΠΎΠ² частиц 6–1000 Π½ΠΌ исслСдованы зависимости ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² коррСля- Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ Π½Π΅ΠΎΠ΄Π½ΠΎΡ€ΠΎΠ΄Π½ΠΎΠΉ намагничСнности ΠΎΡ‚ Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Ρ‹ внСшнСго ΠΏΠ»Π°Π½Π°Ρ€Π½ΠΎΠ³ΠΎ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ поля. Анализ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… зависимостСй ΠΏΠΎΠΊΠ°Π·Π°Π» сущСствСнноС Ρ€Π°Π·Π»ΠΈΡ‡ΠΈΠ΅ коррСляционных Ρ€Π°Π΄ΠΈΡƒ- сов стохастичСской ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ структуры вдоль ΠΈ ΠΏΠΎΠΏΠ΅Ρ€Π΅ΠΊ направлСния ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ поля. ΠŸΡ€ΠΈ ΠΏΠ΅Ρ€Π΅ΠΌΠ°Π³Π½ΠΈΡ‡ΠΈΠ²Π°Π½ΠΈΠΈ Ρ‚ΠΎΠ½ΠΊΠΈΡ… ΠΏΠ»Π΅Π½ΠΎΠΊ наблюдался эффСкт Π±Π»ΠΎΠΊΠΈΡ€ΠΎΠ²ΠΊΠΈ Ρ‚ΠΎΠ½ΠΊΠΎΠΉ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ структуры «ряби намагничСнности

    ЧислСнноС ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ микроструктуры нанокристалличСских Ρ‚ΠΎΠ½ΠΊΠΈΡ… ΠΏΠ»Π΅Π½ΠΎΠΊ со случайной Π°Π½ΠΈΠ·ΠΎΡ‚Ρ€ΠΎΠΏΠΈΠ΅ΠΉ

    No full text
    The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easy axes was studied by means of micromagnetic modeling. The dependences of the correlation function parameters of the non-uniform magnetization on the value of the external in-plane magnetic field were investigated in the wide range (6–1000 nm) of particles sizes. An analysis of the obtained dependences revealed a significant difference between longitudinal (along the field) and transversal (perpendicular to the field) correlation radii of a stochastic magnetic structure. The blocking effect of a fine magnetic structureβ€”a magnetization rippleβ€”was observed during magnetization reversal of the filmsΠœΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡ€ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ модСлирования ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Ρ‹ исслСдования ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ структуры Ρ‚ΠΎΠ½- ΠΊΠΈΡ… нанокристалличСских ΠΏΠ»Π΅Π½ΠΎΠΊ со случайным распрСдСлСниСм осСй Π»Π΅Π³ΠΊΠΎΠ³ΠΎ намагничивания. Π’ ΡˆΠΈΡ€ΠΎΠΊΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ Ρ€Π°Π·ΠΌΠ΅Ρ€ΠΎΠ² частиц 6–1000 Π½ΠΌ исслСдованы зависимости ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² коррСля- Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ Π½Π΅ΠΎΠ΄Π½ΠΎΡ€ΠΎΠ΄Π½ΠΎΠΉ намагничСнности ΠΎΡ‚ Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Ρ‹ внСшнСго ΠΏΠ»Π°Π½Π°Ρ€Π½ΠΎΠ³ΠΎ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠ³ΠΎ поля. Анализ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… зависимостСй ΠΏΠΎΠΊΠ°Π·Π°Π» сущСствСнноС Ρ€Π°Π·Π»ΠΈΡ‡ΠΈΠ΅ коррСляционных Ρ€Π°Π΄ΠΈΡƒ- сов стохастичСской ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ структуры вдоль ΠΈ ΠΏΠΎΠΏΠ΅Ρ€Π΅ΠΊ направлСния ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ поля. ΠŸΡ€ΠΈ ΠΏΠ΅Ρ€Π΅ΠΌΠ°Π³Π½ΠΈΡ‡ΠΈΠ²Π°Π½ΠΈΠΈ Ρ‚ΠΎΠ½ΠΊΠΈΡ… ΠΏΠ»Π΅Π½ΠΎΠΊ наблюдался эффСкт Π±Π»ΠΎΠΊΠΈΡ€ΠΎΠ²ΠΊΠΈ Ρ‚ΠΎΠ½ΠΊΠΎΠΉ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ структуры «ряби намагничСнности
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