An integrated approach to doped thin films with strain-tunable magnetic anisotropy: powder synthesis, target preparation and pulsed laser deposition of Bi:YIG

被引：26
|
作者：
Sellappan, Pathikumar [1 ,2 ]
Tang, Chi [3 ]
Shi, Jing [1 ,3 ]
Garay, Javier E. [1 ,2 ]
机构：
[1] Univ Calif Riverside, Mat Sci & Engn Program, Riverside, CA 92521 USA
[2] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA
[3] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA
来源：
MATERIALS RESEARCH LETTERS | 2017年 / 5卷 / 01期
关键词：
Perpendicular magnetic anisotropy (PMA); ferrimagnetic insulators; yttrium iron garnet; nanostructured oxides; current-activated pressure-assisted densification (CAPAD); spark plasma sintering (SPS); YTTRIUM-IRON-GARNET; BI-SUBSTITUTION; DENSIFICATION; TEMPERATURE; CERAMICS;
D O I：
10.1080/21663831.2016.1195779
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a synthesis/processing method for fabricating ferrimagnetic insulator (Bi-doped yttrium iron garnet) thin films with tunable magnetic anisotropy. Since the desired magnetic properties rely on controllable thickness and successful doping, we pay attention to the entire synthesis/processing procedure (nanopowder synthesis, nanocrystalline target preparation and pulsed laser deposition (PLD)). Atomically flat films were deposited by PLD on (111)-orientated yttrium aluminum garnet. We show a significant enhancement of perpendicular anisotropy in the films, caused by strain-induced anisotropy. In addition, the perpendicular anisotropy is tunable by decreasing the film thickness and overwhelms the shape anisotropy at a critical thickness of 3.5 nm. [GRAPHICS] IMPACT STATEMENT Strain-induced perpendicular magnetic anisotropy (PMA) in heavily Bi substituted YIG films for ferrimagnetic insulator based spintronic studies and devices.
引用
收藏
页码：41 / 47
页数：7
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