Effect of a Platinum Buffer Layer on the Magnetization Dynamics of Sputter Deposited YIG Polycrystalline Thin Films

被引：13
|
作者：
Pati, Satya Prakash [1 ]
Al-Mahdawi, Muftah [1 ]
Shiokawa, Yohei [1 ]
Sahashi, Masashi [1 ,2 ]
Endo, Yasushi [1 ,3 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Elect Engn, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy, ImPACT Program, Tokyo 1020076, Japan
[3] Tohoku Univ, Ctr Spintron Res Network, Sendai, Miyagi 9808577, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2017年 / 53卷 / 11期
关键词：
Coplanar waveguide ferromagnetic resonance (CPW-FMR) measurement; damping constant; thin film; yttrium iron garnet (YIG); SUBSTRATE-TEMPERATURE; LASER DEPOSITION; INSULATOR; BEHAVIOR;
D O I：
10.1109/TMAG.2017.2695560
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The present investigation deals with the effect of thickness and a platinum (Pt) buffer layer on the dynamic magnetic properties of polycrystalline yttrium iron garnet (YIG) films fabricated after post-annealing to recrystallize from the amorphous state. The dynamic magnetic properties of films without a buffer layer deteriorate as the thickness decreases as indicated by the increased line-widths in the ferromagnetic resonance spectra. On the other hand, a strong rejuvenation in the static and dynamic magnetic properties of the films is observed when a Pt buffer layer is used. The Pt buffer layer decreases the Gilbert damping parameter from 11.4x10(-4) and 3.5x10(-4) for a 100 nm-thick YIG film. These observations mainly originate from controlling the microstructure or the surface morphology of the films.
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页数：5
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