Annealing of amorphous yttrium iron garnet thin films in argon atmosphere

被引：12

作者：

Hauser, Christoph ^{[1
]}

Eisenschmidt, Christian ^{[1
]}

Richter, Tim ^{[1
]}

Mueller, Alexander ^{[1
]}

Deniz, Hakan ^{[2
]}

Schmidt, Georg ^{[1
,3
]}

机构：

[1] Martin Luther Univ Halle Wittenberg, Inst Phys, Von Danckelmann Pl 3, D-06120 Halle, Germany

[2] Max Planck Inst Mikrostrukturphys, Weinberg 2, D-06120 Halle, Germany

[3] Martin Luther Univ Halle Wittenberg, Interdisziplinares Zentrum Mat Wissensch, Nanotech Weinberg, Heinrich Damerow Str 4, D-06120 Halle, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2017年 / 122卷 / 08期

关键词：

SPIN-CURRENT; HEAT CONVEYOR; YIG; INSULATOR; ENHANCEMENT; TEMPERATURE; MODES;

D O I：

10.1063/1.4999829

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the recrystallization of amorphous Yttrium Iron Garnet (YIG) thin films by annealing in an argon atmosphere. Our results show that the amorphous film transforms into a fully epitaxial layer. Compared to annealing in oxygen, the argon atmosphere has no significantly deteriorating influence on the structural and magnetic properties of the YIG thin films. In ferromagnetic resonance experiments, low damping and narrow linewidth can be obtained. For a 65 nm thick layer, a damping constant of alpha- (1.61 +/- 0.25) x 10(-4) is found and the linewidth at 9.6 GHz is as small as 2.26 +/- 0.10 Oe. These values are comparable to the best results for YIG thin films grown at high temperature pulsed laser deposition and almost as good as for thin YIG films deposited at room temperature and annealed in oxygen. Annealing in vacuum or growth in argon atmosphere, however, results in non-magnetic material. Published by AIP Publishing.

引用

页数：7

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