Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5491097 | Journal of Magnetism and Magnetic Materials | 2017 | 31 Pages |
Abstract
A study of the magnetoelastic (ME) and thermal effects governing the phase (Ï) and amplitude of magnetostatic surface spin wave (MSSW) pulses propagating in Ga:YIG/GGG and permalloy magnonic waveguides is presented. The ME effects were studied in a flexural configuration, under punctual mechanical force (F). Thermally induced ME and demagnetization phenomena were controlled by optically injected thermal power Pth. It was determined that in an unclamped Ga:YIG waveguide, the force F that induces the phase shift ÎÏ=Ï, decreases by a quadratic law in the range from 1 mN to nN, and the Pth at which ÎÏ=Ï decreases linearly from mW to μW as the waveguide volume decreases from mm3 to nm3. For nano-volume waveguides the ME control energy (Eme) can be of order of aJ, and the thermal control energy (ÎEth) can be as small as 50 fJ. The response time of these effects lies in the ns time scale. Both the mechanical and the thermo-magnetic forces provide an effective control of MSSW pulse amplitude, in addition to its phase shift. The thermo-magnetic effect allows one to realize variable delays of a MSSW pulse.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Ivan Gómez-Arista, O. Kolokoltsev, A. Acevedo, N. Qureshi, César L. Ordóñez-Romero,