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.

引用

页数：5

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