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Magnetization dynamics in single and trilayer nanowires. (2024)
Journal Article
Kuchibhotla, M., Haldar, A., & Adeyeye, A. O. (2024). Magnetization dynamics in single and trilayer nanowires. Journal of Physics: Condensed Matter, 36(45), Article 455808. https://doi.org/10.1088/1361-648X/ad6c9a

We have studied the magnetization dynamics of single Py( ) ( = 20 nm, 50 nm) and trilayer [Py(50)/Pd( )/Py(20)] nanowire arrays fabricated over large areas using deep ultraviolet lithography technique. The dynamic properties are sensitive to the fiel... Read More about Magnetization dynamics in single and trilayer nanowires..

Dominant higher-order vortex gyromodes in circular magnetic nanodots (2024)
Journal Article
Bondarenko, A. V., Bunyaev, S. A., Shukla, A. K., Apolinario, A., Singh, N., Navas, D., Guslienko, K. Y., Adeyeye, A. O., & Kakazei, G. N. (2024). Dominant higher-order vortex gyromodes in circular magnetic nanodots. Nanoscale Horizons, 9(9), 1381-1590. https://doi.org/10.1039/d4nh00145a

The transition to the third dimension enables the creation of spintronic nanodevices with significantly enhanced functionality compared to traditional 2D magnetic applications. In this study, we extend common two-dimensional magnetic vortex configura... Read More about Dominant higher-order vortex gyromodes in circular magnetic nanodots.

Tailoring magnon modes by extending square, kagome, and trigonal spin ice lattices vertically via interlayer coupling of trilayer nanomagnets. (2024)
Journal Article
de Rojas, J., Atkinson, D., & Adeyeye, A. O. (2024). Tailoring magnon modes by extending square, kagome, and trigonal spin ice lattices vertically via interlayer coupling of trilayer nanomagnets. Journal of Physics: Condensed Matter, 36(41), Article 415805. https://doi.org/10.1088/1361-648X/ad5d3f

In this work high-frequency magnetization dynamics and statics of artificial spin-ice lattices with different geometric nanostructure array configurations are studied where the individual nanostructures are composed of ferromagnetic/non-magnetic/ferr... Read More about Tailoring magnon modes by extending square, kagome, and trigonal spin ice lattices vertically via interlayer coupling of trilayer nanomagnets..

Collective spin waves in RKKY interlayer-coupled Ni 80 Fe 20 /Ru/Ni 80 Fe 20 nanowire arrays (2024)
Journal Article
Adeyeye, A. O., Hussain, B., Cottam, M. G., & Gubbiotti, G. (2024). Collective spin waves in RKKY interlayer-coupled Ni 80 Fe 20 /Ru/Ni 80 Fe 20 nanowire arrays. Journal of Physics: Condensed Matter, 36(39), Article 395801. https://doi.org/10.1088/1361-648x/ad5923

We report on a comprehensive investigation of collective spin waves in Ruderman–Kittel–Kasuya–Yosida (RKKY) interlayer-coupled Ni80Fe20 (10 nm)/Ru(1.0 nm)/ Ni80Fe20 (10 nm) nanowire (NW) arrays. We employed Brillouin light scattering to probe the fie... Read More about Collective spin waves in RKKY interlayer-coupled Ni 80 Fe 20 /Ru/Ni 80 Fe 20 nanowire arrays.

Spin Textures in High-Aspect-Ratio Ni80Fe20 Nanodisk Arrays: Implications for Next-Generation Spintronic Devices (2024)
Journal Article
Devapriya, M. S., Zhou, X., Haldar, A., & Adeyeye, A. O. (2024). Spin Textures in High-Aspect-Ratio Ni80Fe20 Nanodisk Arrays: Implications for Next-Generation Spintronic Devices. ACS Applied Nano Material, 7(13), 15096–15103. https://doi.org/10.1021/acsanm.4c01857

Recent progress in nanomagnetism has generated significant enthusiasm for the creation of high-aspect-ratio nanostructures. Nonetheless, fabricating large-area thick nanostructures encounters substantial hurdles due to inherent lithographic constrain... Read More about Spin Textures in High-Aspect-Ratio Ni80Fe20 Nanodisk Arrays: Implications for Next-Generation Spintronic Devices.

Coherent and Dissipative Coupling in a Magnetomechanical System (2024)
Journal Article
Carrara, P., Brioschi, M., Silvani, R., Adeyeye, A. O., Adeyeye, A., Panaccione, G., …Cucini, R. (2024). Coherent and Dissipative Coupling in a Magnetomechanical System. Physical Review Letters, 132(21), Article 216701. https://doi.org/10.1103/PhysRevLett.132.216701

Hybrid elastic and spin waves hold promises for energy-efficient and versatile generation and detection of magnetic signals, with potentially long coherence times. Here we report on the combined elastic and magnetic dynamics in a one-dimensional magn... Read More about Coherent and Dissipative Coupling in a Magnetomechanical System.

Investigation of magnetization dynamics in trilayer width-modulated nanowires (2024)
Journal Article
Kuchibhotla, M., Haldar, A., & Adeyeye, A. O. (2024). Investigation of magnetization dynamics in trilayer width-modulated nanowires. Journal of Applied Physics, 135(10), Article 103903. https://doi.org/10.1063/5.0191447

We have investigated the magnetization reversal processes and dynamic behavior of trilayered Py(50 nm)/Pd(tPd)/Py(20 nm) nanowires with periodic width modulation as a function of spacer layer thickness tPd in the range from 0 to 10 nm and compared th... Read More about Investigation of magnetization dynamics in trilayer width-modulated nanowires.

Tunable 2-D magnonic crystals: effect of packing density (2024)
Journal Article
Tian, C., & Adeyeye, A. O. (2024). Tunable 2-D magnonic crystals: effect of packing density. Nanoscale, 16(9), 4858-4865. https://doi.org/10.1039/d3nr05582e

Magnonic crystals, periodic arrays of magnetic structures, have emerged as a promising platform for manipulating and controlling spin waves in magnetic materials. Magnetic antidot nanostructures, representing 2-D magnonic crystals, are versatile plat... Read More about Tunable 2-D magnonic crystals: effect of packing density.

Tuning magnon spectra via interlayer coupling in pseudo-3D nanostructured artificial spin ice arrays (2023)
Journal Article
de Rojas, J., Atkinson, D., & Adeyeye, A. O. (2023). Tuning magnon spectra via interlayer coupling in pseudo-3D nanostructured artificial spin ice arrays. Applied Physics Letters, 123(23), Article 232407. https://doi.org/10.1063/5.0177447

We have investigated the static and dynamic behavior of “pseudo-3D” trilayer square artificial spin ice structures. The trilayer stack comprises of two ferromagnetic Ni81Fe19 (Permalloy, Py) layers with 30 and 70 nm thickness, separated by a nonmagne... Read More about Tuning magnon spectra via interlayer coupling in pseudo-3D nanostructured artificial spin ice arrays.

Magnetization dynamics of elastically strained nanostructures studied by coupled micromagnetic-mechanical simulations (2023)
Journal Article
Chiroli, S., Faurie, D., Haboussi, M., Adeyeye, A. O., & Zighem, F. (2023). Magnetization dynamics of elastically strained nanostructures studied by coupled micromagnetic-mechanical simulations. Physical Review B, 108, Article 024406. https://doi.org/10.1103/PhysRevB.108.024406

Elastically strained ferromagnetic objects have been studied by coupled micromagnetic-mechanical numerical simulations. Both temporal evolution of the magnetization and modal frequency analysis of ferromagnetic thin films and arrays of nanostructures... Read More about Magnetization dynamics of elastically strained nanostructures studied by coupled micromagnetic-mechanical simulations.

Tuning spin wave modes in yttrium iron garnet films with stray fields (2022)
Journal Article
Chaudhuri, U., Singh, N., Mahendiran, R., & Adeyeye, A. O. (2022). Tuning spin wave modes in yttrium iron garnet films with stray fields. Nanoscale, 14(33), 12022 - 12029. https://doi.org/10.1039/d2nr00618a

The nanopatterning of Yttrium Iron Garnets (YIGs) has proven to be a non-trivial problem even with advances in modern lithography techniques due to non-compatibility with a conventional complementary metal oxide semiconductor platform. In an attempt... Read More about Tuning spin wave modes in yttrium iron garnet films with stray fields.

Elongation of skyrmions by Dzyaloshinskii–Moriya interaction in helimagnetic films (2022)
Journal Article
Dai, Y., Wang, H., Yang, T., Adeyeye, A. O., & Zhang, Z. (2022). Elongation of skyrmions by Dzyaloshinskii–Moriya interaction in helimagnetic films. Rare Metals, 41(9), 3150-3159. https://doi.org/10.1007/s12598-022-02023-z

Distortion of skyrmions arouses much attention recently due to the exotic topological and dynamic properties. Investigating the formation mechanism and dynamical behavior of the deformed skyrmions promotes practical spintronic applications. Elongatio... Read More about Elongation of skyrmions by Dzyaloshinskii–Moriya interaction in helimagnetic films.

Engineering spin wave spectra in thick Ni80Fe20 rings by using competition between exchange and dipolar fields (2021)
Journal Article
Zhou, X., Tartakovskaya, E., Kakazei, G., & Adeyeye, A. (2021). Engineering spin wave spectra in thick Ni80Fe20 rings by using competition between exchange and dipolar fields. Physical Review B, 104(21), Article 214402. https://doi.org/10.1103/physrevb.104.214402

Control of the spin wave dynamics in nanomagnetic elements is very important for the realization of a broad range of novel magnonic devices. Here we study experimentally the spin wave resonance in thick ferromagnetic rings (100 nm) using perpendicula... Read More about Engineering spin wave spectra in thick Ni80Fe20 rings by using competition between exchange and dipolar fields.

Prospects toward flexible magnonic systems (2021)
Journal Article
Faurie, D., Adeyeye, A., & Zighem, F. (2021). Prospects toward flexible magnonic systems. Journal of Applied Physics, 130(15), Article 150901. https://doi.org/10.1063/5.0055976

This paper presents the prospects for periodic magnetic nanostructures in the form of magnonic crystals on polymer substrates. Indeed, arrays of magnetic nanostructures on flexible substrates are promising for microwave applications in the GHz freque... Read More about Prospects toward flexible magnonic systems.

Magnetization dynamics of single and trilayer permalloy nanodots (2021)
Journal Article
Kuchibhotla, M., Talapatra, A., Haldar, A., & Adeyeye, A. O. (2021). Magnetization dynamics of single and trilayer permalloy nanodots. Journal of Applied Physics, 130(8), Article 083906. https://doi.org/10.1063/5.0060689

We have investigated the magnetization dynamics in single and trilayer circular permalloy nanodots with a diameter of 120 nm using broadband ferromagnetic resonance spectroscopy. For single-layer nanodots, two well-separated modes near the saturation... Read More about Magnetization dynamics of single and trilayer permalloy nanodots.

The 2021 Magnonics Roadmap (2021)
Journal Article
Barman, A., Gubbiotti, G., Ladak, S., Adeyeye, A. O., Krawczyk, M., Gräfe, J., Adelmann, C., Cotofana, S., Naeemi, A., Vasyuchka, V. I., Hillebrands, B., Nikitov, S., Yu, H., Grundler, D., Sadovnikov, A., Grachev, A. A., Sheshukova, S., Duquesne, J.-Y., Marangolo, M., Gyorgy, C., …Winklhofer, M. (online). The 2021 Magnonics Roadmap. Journal of Physics: Condensed Matter, https://doi.org/10.1088/1361-648x/abec1a

Functional magnetic waveguides for magnonics (2021)
Journal Article
Haldar, A., & Adeyeye, A. O. (2021). Functional magnetic waveguides for magnonics. Applied Physics Letters, 119(6), Article 060501. https://doi.org/10.1063/5.0061528

Magnonics, or spin wave based spintronics, is an emerging technology where magnons—quanta for spin waves—process the information analogous to electronic charges in electronics. We introduce the fundamental components of a magnonic device and briefly... Read More about Functional magnetic waveguides for magnonics.

Differentiated Strain-Control of Localized Magnetic Modes in Antidot Arrays (2021)
Journal Article
Challab, N., Faurie, D., Haboussi, M., Adeyeye, A. O., & Zighem, F. (2021). Differentiated Strain-Control of Localized Magnetic Modes in Antidot Arrays. ACS Applied Materials and Interfaces, 13(25), 29906-29915. https://doi.org/10.1021/acsami.1c05582

The control of localized magnetic modes has been obtained in Ni60Fe40 square lattice (600 nm) antidot arrays. This has been performed by tailoring the magnetoelastic field at the scale of the antidot primitive cell. The corresponding heterogeneous st... Read More about Differentiated Strain-Control of Localized Magnetic Modes in Antidot Arrays.

Coupled magnetic nanostructures: Engineering lattice configurations (2021)
Journal Article
Talapatra, A., & Adeyeye, A. (2021). Coupled magnetic nanostructures: Engineering lattice configurations. Applied Physics Letters, 118(17), Article 172404. https://doi.org/10.1063/5.0045235

We present a systematic investigation of tunable magnetization dynamics of coupled magnetic nanostructures, arranged in one-dimensional arrays of horizontally and vertically coupled linear chains and in two-dimensional arrays of square artificial spi... Read More about Coupled magnetic nanostructures: Engineering lattice configurations.