journal article·2023-02-01Open access

Low magnetic damping constant in half-metallic Co2FeAl Heusler alloy thin films grown by molecular beam epitaxy

Takayuki Hojo, Nobuki Tezuka, Takafumi Nakano, Masakiyo Tsunoda, Mikihiko Oogane

AIP Advances· Volume 13· Issue 2

Abstract

Half-metallic Co2FeAl Heusler alloy thin films with various thickness were prepared by MBE method and its magnetic and crystalline properties were investigated. At the thickness of 20 nm and above, good magnetic properties and high B2-order parameter was obtained. In addition, magnetic damping constant was evaluated from peak-to-peak linewidth measured by FMR and ultra-low magnetic damping constant below 0.001 was obtained at the film thickness of 30 nm. These results are thanks to the excellent half-metallicity in the Co2FeAl films prepared by MBE.
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Research context

OpenAlex topics: Heusler alloys: electronic and magnetic properties · MXene and MAX Phase Materials · Magnetic properties of thin films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Applied Physics, Graduate School of Engineering, Tohoku University 1 , Sendai 980-8579, Japan

Department of Metallurgy Science and Materials Processing, Graduate School of Engineering, Tohoku University 2 , Sendai 980-8579, Japan

Department of Electronic Engineering, Graduate School of Engineering, Tohoku University 3 , Sendai 980-8579, Japan

Center for Science and Innovation in Spintronics (Core Research Cluster), Organization for Advanced Studies, Tohoku University 4 , Sendai 980-8577, Japan

Funding

New Energy and Industrial Technology Development Organization · the GP-Spin Program at Tohoku University · the Center for Science and Innovation in Spintronics · JST Spring

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