MSSW and MSVW in a multilayered ferrimagnetic structure with an arbitrary orientation between two static magnetizations. [Magnetostatic surface waves and magnetostatic volume waves]

Journal Article · · IEEE Transactions on Microwave Theory and Techniques (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5715158

Sun, Kunquan ^[1]

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1. Jackson State Univ., Jackson, MS (United States)

The propagation of magnetostatic waves (MSW's) in layered planar magnetic structures has been studied by many investigators. Much of this interest is geared to achieve technically desired delay characteristics, especially in conjunction with the microwave integrated circuits. Here, this paper presents a study of both magnetostatic surface wave (MSSW) and magnetostatic volume wave (MSVW) propagation in multilayered magnetic thin films with noncollinear magnetizations. YIG/GGG/YIG structure is used, where YIG and GGG are the abbreviations for yttrium iron garnet and gadolinium gallium garnet, respectively. The layered film is in the (110) plane. Due to the existence of both cubic and induced in-plane uniaxial anisotropy fields in the two YIG films, the two magnetizations ([rvec M][sub 1] and [rvec M][sub 2]) are not aligned with the applied dc field. Since there is an arbitrary angle between [rvec M][sub 1] and [rvec M][sub 2], there is a new configuration to study both MSSW and MSVW propagations. The interested MSVW propagation in the plane formed by [rvec M][sub 1] and [rvec M][sub 2] shows a different dispersion relationship from that in the direction perpendicular to the plane formed by [rvec M][sub 1] and [rvec M][sub 2]. For a given applied dc field normal to the film plane, MSVW is excited in the [rvec M][sub 2] layer, while MSSW is excited in the M[sub 1] layer. The author has found that the angle between the two static magnetizations strongly affects the dispersion relationship. In addition, the effect of the separation between the two magnetic layers on the dispersion and time delay has been studied.

• OSTI ID: 5715158
• Journal Information: IEEE Transactions on Microwave Theory and Techniques (Institute of Electrical and Electronics Engineers); (United States), Vol. 41:6-7; ISSN 0018-9480
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPOSITE MATERIALS
MAGNETIZATION
FERRIMAGNETIC MATERIALS
INTEGRATED CIRCUITS
TIME DELAY
DISPERSION RELATIONS
FERRITE GARNETS
LAYERS
MICROWAVE EQUIPMENT
THEORETICAL DATA
THIN FILMS
WAVE PROPAGATION
DATA
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FILMS
INFORMATION
MAGNETIC MATERIALS
MATERIALS
MICROELECTRONIC CIRCUITS
MINERALS
NUMERICAL DATA
OXIDE MINERALS
SILICATE MINERALS
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)