An integrated approach to doped thin films with strain-tunable magnetic anisotropy: powder synthesis, target preparation and pulsed laser deposition of Bi:YIG. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Sellappan, Pathikumar; Tang, Chi; Shi, Jing; Garay, Javier E.
• Is Part Of: Materials research letters. Volume 5:Issue 1(2017)
• Page Start: 41
• Page End: 47
• Publication Date: 2017-01-02
• Subjects: Perpendicular magnetic anisotropy (PMA) -- ferrimagnetic insulators -- yttrium iron garnet -- nanostructured oxides -- current-activated pressure-assisted densification (CAPAD) -- spark plasma sintering (SPS); Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2016.1195779
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : 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. GRAPHICAL ABSTRACT: IMPACT STATEMENT Strain-induced perpendicular magnetic anisotropy (PMA) in heavily Bi substituted YIG films for ferrimagnetic insulator based spintronic studies and devices.