Effects of antidot shape on the spin wave spectra of two-dimensional Ni80Fe20 antidot lattices

Ruma Mandal; Pinaki Laha; Kaustuv Das; Susmita Saha; Saswati Barman; A. K. Raychaudhuri; Anjan Barman

doi:10.1063/1.4860959

Effects of antidot shape on the spin wave spectra of two-dimensional Ni₈₀Fe₂₀ antidot lattices

Ruma Mandal, Pinaki Laha, Kaustuv Das, Susmita Saha, Saswati Barman, A. K. Raychaudhuri, Anjan Barman

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

We show that the optically induced spin wave spectra of nanoscale Ni ₈₀Fe₂₀ (permalloy) antidot lattices can be tuned by changing the antidot shape. The spin wave spectra also show an anisotropy with the variation of the in-plane bias field orientation. Analyses show this is due to various quantized and extended modes, whose nature changes with the antidot shape and bias field orientation as a result of the variation of the internal magnetic field profile. The observed variation and anisotropy in the spin waves with the internal and external parameters are important for their applications in magnonic devices.

Original language	English
Article number	262410
Journal	Applied Physics Letters
Volume	103
Issue number	26
DOIs	https://doi.org/10.1063/1.4860959
Publication status	Published - 2013 Dec 23
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4860959

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title = "Effects of antidot shape on the spin wave spectra of two-dimensional Ni80Fe20 antidot lattices",

abstract = "We show that the optically induced spin wave spectra of nanoscale Ni 80Fe20 (permalloy) antidot lattices can be tuned by changing the antidot shape. The spin wave spectra also show an anisotropy with the variation of the in-plane bias field orientation. Analyses show this is due to various quantized and extended modes, whose nature changes with the antidot shape and bias field orientation as a result of the variation of the internal magnetic field profile. The observed variation and anisotropy in the spin waves with the internal and external parameters are important for their applications in magnonic devices.",

author = "Ruma Mandal and Pinaki Laha and Kaustuv Das and Susmita Saha and Saswati Barman and Raychaudhuri, {A. K.} and Anjan Barman",

note = "Funding Information: We gratefully acknowledge the financial supports from Department of Science and Technology, Government of India under the Grant Nos. INT/JP/JST/P-23/09, SR/NM/NS-09/2011(G), and Department of Information Technology, Government of India under Grant No. 1(7)/2010/M&C. We also acknowledge technical helps from Dheeraj Kumar and Bivas Rana during this work. S.B. wants to acknowledge DST (Grant Nos. SR/NM/NS-53/2010 and SR/WOS-A/PS-27/2010) for financial support.",

year = "2013",

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doi = "10.1063/1.4860959",

language = "English",

volume = "103",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Effects of antidot shape on the spin wave spectra of two-dimensional Ni80Fe20 antidot lattices

AU - Mandal, Ruma

AU - Laha, Pinaki

AU - Das, Kaustuv

AU - Saha, Susmita

AU - Barman, Saswati

AU - Raychaudhuri, A. K.

AU - Barman, Anjan

N1 - Funding Information: We gratefully acknowledge the financial supports from Department of Science and Technology, Government of India under the Grant Nos. INT/JP/JST/P-23/09, SR/NM/NS-09/2011(G), and Department of Information Technology, Government of India under Grant No. 1(7)/2010/M&C. We also acknowledge technical helps from Dheeraj Kumar and Bivas Rana during this work. S.B. wants to acknowledge DST (Grant Nos. SR/NM/NS-53/2010 and SR/WOS-A/PS-27/2010) for financial support.

PY - 2013/12/23

Y1 - 2013/12/23

N2 - We show that the optically induced spin wave spectra of nanoscale Ni 80Fe20 (permalloy) antidot lattices can be tuned by changing the antidot shape. The spin wave spectra also show an anisotropy with the variation of the in-plane bias field orientation. Analyses show this is due to various quantized and extended modes, whose nature changes with the antidot shape and bias field orientation as a result of the variation of the internal magnetic field profile. The observed variation and anisotropy in the spin waves with the internal and external parameters are important for their applications in magnonic devices.

AB - We show that the optically induced spin wave spectra of nanoscale Ni 80Fe20 (permalloy) antidot lattices can be tuned by changing the antidot shape. The spin wave spectra also show an anisotropy with the variation of the in-plane bias field orientation. Analyses show this is due to various quantized and extended modes, whose nature changes with the antidot shape and bias field orientation as a result of the variation of the internal magnetic field profile. The observed variation and anisotropy in the spin waves with the internal and external parameters are important for their applications in magnonic devices.

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ER -

Effects of antidot shape on the spin wave spectra of two-dimensional Ni₈₀Fe₂₀ antidot lattices

Abstract

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