Recently, spin wave logic gates12 and microstructured waveguides2,13 were demonstrated. Therefore, excitation, characterization, understanding and manipulation of spin waves become crucial. For applications of magnonic or magnon spintronic devices, spin waves are expected to serve as information carriers to realize transmission and processing of information8-11. The simultaneous excitation of BVMSW and PSSW in Heusler alloy films as well as the characterization of their dynamic behaviors may be of interest for magnonic and spintronic applications.Ĭobalt-based full-Heusler ferromagnetic alloy films have attracted much attention due to potential applications both for spintronic1 and magnonic2-4 devices, which can be attributed to their high Curie temperature, high spin polarization and low magnetic damping3-7. The frequency of BVMSW mode does not obviously depend on the film thickness, but the lifetime and the effective damping appear to do so.

The relationship between the lifetime and the group velocity of BVMSW mode is revealed. The field dependence of the effective Gilbert damping parameter appears especial extrinsic origin. Backward volume magnetostatic spin-wave (BVMSW) mode is observed in films with thickness ranging from 20 to 100 nm besides perpendicular standing spin-wave (PSSW) mode, and found to be excited more efficiently than the PSSW mode. Spin-wave dynamics in full-Heusler Co2FeAl05Si05 films are studied using all-optical pump-probe magneto-optical polar Kerr spectroscopy. 14 February 2017 zhifeng Chen1,2, Yong YanShufa Li1, Xiaoguang Xu3, Yong Jiang3 & Tianshu Lai1 OPEN Simultaneous laser excitation of backward volume and perpendicular standing spin waves 'ST: 2017 in full-Heusler Co2FeAl0.sSi0.5 films

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