Details

Autor(en) / Beteiligte

• Hsu, Chin-Jui
• Prikhodko, Sergey V.
• Wang, Chiu-Yen
• Chen, Lih-Juann
• Carman, Gregory P.

Titel

Magnetic anisotropy in nanostructured gadolinium

Ist Teil von

• Journal of applied physics, 2012-03, Vol.111 (5), p.053916-053916-6

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This experimental work evaluates the magnetic response of 25-nm-thick Gd thin film and 1400 × 70 × 50 nm 3 Gd nanobar structures. Neither the thin film nor the nanobars exhibited single domain behavior at temperatures down to 53K. The Gd thin film exhibited a magnetocrystalline anisotropy induced spin-reorientation due to a hexagonal close-packed (002) texture, something different from that previously reported on epitaxial Gd thin film. The discrepancy is due to grain boundary induced spin-disorder in the nanosacle. The Gd nanobars had a saturation magnetization 75% smaller than the thin film or bulk and is attributed to oxidation as well as the crystallinity changes from hexagonal close-packed to face-centered cubic caused by stress induced stacking faults. These experimental results for both thin film and nanobar show that the crystallinity has a substantial impact to the magnetic anisotropy of Gd nanostructures as well as the formation of single domain structures.